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412:. The first signs of the planet were announced in 2016, but it was not until the following years that more information concerning the probable nature of the planet was obtained. TRAPPIST-1d is the second-least massive planet of the system and is likely to have a compact hydrogen-poor atmosphere similar to Venus, Earth, or Mars. It receives just 4.3% more sunlight than Earth, placing it on the inner edge of the habitable zone. It has about <5% of its mass as a volatile layer, which could consist of atmosphere, oceans, and/or ice layers. A 2018 study by the
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489:, the Solar System's innermost planet, takes 88 days to orbit at a distance of about 0.38 AU. The size of TRAPPIST-1 and the close orbit of TRAPPIST-1d around it means that the star as seen from the planet appears 5.5 times as large as the Sun from the Earth. While a planet at TRAPPIST-1d's distance from the Sun would be a scorched world, the low luminosity of TRAPPIST-1 means that the planet gets only 1.043 times the sunlight that Earth receives, placing it within the inner part of the conservative habitable zone.
462:, it has nearly three times that planet's mass but was thought to still be significantly less dense, which would indicate the presence of a significant atmosphere; models of the low density of TRAPPIST-1d indicated a mainly rocky composition, but with about ≤5% of its mass in the form of a volatile layer. The volatile layer of TRAPPIST-1d may consist of atmosphere, ocean, and/or ice layers. However, refined estimates show that the planet is more dense, closer to 79.2% of Earth's bulk density (
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and the volcanic gases could replenish the atmosphere lost to the solar wind. TRAPPIST-1d may resist this the tidal heating, especially if it has an Earth-like albedo of ≥0.3, according to other analyses. The same researchers point out that such proximity to the host star tends to increase geothermal
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Because TRAPPIST-1d is only ~30% the Earth's mass, it, like Venus and Mars, may have no magnetic field, which would allow the parent star's solar wind to strip away the more volatile components of its atmosphere (including water), leaving it hydrogen-poor like those planets. However, due to its close
885:
Grimm, Simon L.; Demory, Brice-Olivier; Gillon, Michael; Dorn, Caroline; Agol, Eric; Burdanov, Artem; Delrez, Laetitia; Sestovic, Marko; Triaud, Amaury H.M.J.; Turbet, Martin; Bolmont, Emeline; Caldas, Anthony; de Wit, Julien; Jehin, Emmanuel; Leconte, Jeremy; Raymond, Sean N.; Van
Grootel, Valerie;
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Gillon, M.; Triaud, A. H. M. J.; Demory, B.-O.; Jehin, E.; Agol, E.; Deck, K. M.; Lederer, S. M.; De Wit, J.; Burdanov, A.; Ingalls, J. G.; Bolmont, E.; Leconte, J.; Raymond, S. N.; Selsis, F.; Turbet, M.; Barkaoui, K.; Burgasser, A.; Burleigh, M. R.; Carey, S. J.; Chaushev, A.; Copperwheat, C. M.;
1106:
Delrez, Laetitia; Gillon, Michael; H.M.J, Amaury; Brice-Oliver Demory, Triaud; de Wit, Julien; Ingalls, James; Agol, Eric; Bolmont, Emeline; Burdanov, Artem; Burgasser, Adam J.; Carey, Sean J.; Jehin, Emmanuel; Leconte, Jeremy; Lederer, Susan; Queloz, Didier; Selsis, Franck; Grootel, Valerie Van (9
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The star is not just very small and far away, it also emits comparatively little visible light, mainly shining in the invisible infrared. Even from the close in proximity of TRAPPIST-1d, about 50 times closer than Earth is from the Sun, the planet receives less than 1% the visible light Earth sees
560:
Stars like TRAPPIST-1 have the ability to live up to 4–5 trillion years, 400–500 times longer than the Sun will live (the Sun only has about 8 billion years of lifespan left, slightly more than half of its lifetime). Because of this ability to live for long periods of time, it is likely TRAPPIST-1
469:). TRAPPIST-1d has an equilibrium temperature of 282.1 K (9.0 °C; 48.1 °F), assuming an albedo of 0. For an Earth-like albedo of 0.3, the planet's equilibrium temperature is around 258 K (−15 °C; 5 °F), very similar to Earth's at 255 K (−18 °C; −1 °F).
605:
The planet is located at the inner edge of the expected habitable zone of its parent star (where liquid water can reasonably be expected to exist on its surface). The planet may also have liquid and atmospheric water, up to many times more than Earth. However, some three-dimensional modeling
627:
activity, and tidally heat the bottom of any seas. If the planet has suffered a runaway greenhouse, its atmosphere should be thinner and cooler than Venus', due to its smaller mass and the fact it only receives about as much radiation as the Earth (while Venus receives about twice as much).
703:"The planets closest to the star, TRAPPIST-1b and c, are unchanged. But there’s a new third planet, which has taken the d moniker, and what had looked like d before turned out to be glimpses of e, f and g. There’s a planet h, too, drifting farthest away and only spotted once."
445:
with a small error margin of about 70 km. Transit timing variations and complex computer simulations helped accurately determine the mass of the planet, which led to scientists being able to calculate its density, surface gravity, and composition. TRAPPIST-1d is a mere
580:
from the Sun. This would probably make the days on TRAPPIST-1d never brighter than twilight is on Earth. However, that still means that TRAPPIST-1 could easily shine at least 3000 times brighter in the sky of TRAPPIST-1d than the full moon does in Earth's night sky.
688:"We already knew that TRAPPIST-1, a small, faint star some 40 light years away, was special. In May 2016, a team led by Michaël Gillon at Belgium’s University of Liege announced it was closely orbited by three planets that are probably rocky: TRAPPIST-1b, c and d...
630:
The lack of a magnetic field will also result in the surface receiving more charged particles than the Earth does. And if the planet is tidally locked, a dense atmosphere could be enough to transfer heat from the illuminated side to the much colder dark side.
548:() of 0.04, or 109% the solar amount. This is particularly odd as such low-mass stars near the boundary between brown dwarfs and hydrogen-fusing stars should be expected to have considerably less metals than the Sun. Its luminosity (
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In some respects, this exoplanet is one of the most Earth-like found. It does not have a hydrogen or helium-based atmosphere, which makes larger planets uninhabitable (the planet is not massive enough to retain light gases).
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Burgasser, Adam J.; Carey, Sean; Fabrycky, Daniel; Heng, Kevin; Hernandez, David M.; Ingalls, James G.; Lederer, Susan; Selsis, Franck; Queloz, Didier (5 February 2018). "The nature of the TRAPPIST-1 exoplanets".
693:"As the team kept watching shadow after shadow cross the star, three planets no longer seemed like enough to explain the pattern. “At some point we could not make sense of all these transits,” Gillon says.
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663:, they discovered three Earth-sized planets orbiting the dwarf star; the innermost two are tidally locked to their host star while the outermost appears to lie either within the system's
698:"Now, after using the space-based Spitzer telescope to stare at the system for almost three weeks straight, Gillon and his team have solved the problem: TRAPPIST-1 has four more planets.
458:, making it one of the least massive exoplanets yet found. Initial estimates suggested that it has 61.6% the density of Earth (3.39 g/cm) and just under half the gravity. Compared to
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Ducrot, E.; Gillon, M.; Delrez, L.; Agol, E.; et al. (1 August 2020). "TRAPPIST-1: Global results of the
Spitzer Exploration Science Program Red Worlds".
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TRAPPIST-1d is a closely orbiting planet, with one full orbit taking just 4.05 days (about 97 hours) to complete. It orbits at a distance of just 0.02228
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or just outside of it. The team made their observations from
September to December 2015 and published its findings in the May 2016 issue of the journal
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Models and scientists are divided on whether their convergent solutions from the data for TRAPPIST-1d indicates Earth-like habitability or a severe
1487:"Three Potentially Habitable Worlds Found Around Nearby Ultracool Dwarf Star - Currently the best place to search for life beyond the Solar System"
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576:, or how bright it appears from Earth's perspective, is 18.8. Therefore, it is too dim to be seen with the naked eye (the limit for that is 6.5).
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Delrez, L.; Fernandes, C. S.; Holdsworth, D. L.; Kotze, E. J.; Van
Grootel, V.; Almleaky, Y.; Benkhaldoun, Z.; Magain, P.; Queloz, D. (2017).
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540:. It has a temperature of 2,516 K (2,243 °C; 4,069 °F), and is between 3 and 8 billion years old. In comparison, the
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Van
Grootel, Valerie; Fernandes, Catarina S.; Gillon, Michaël; Jehin, Emmanuel; Scuflaire, Richard; et al. (5 December 2017).
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TRAPPIST-1d was detected with the transit method, allowing scientists to accurately determine its radius. The planet is about
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is 4.6 billion years old and has a temperature of 5778 K (5504.85 °C, 9940.73 °F). The star is metal-rich, with a
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817:"Refining the Transit-timing and Photometric Analysis of TRAPPIST-1: Masses, Radii, Densities, Dynamics, and Ephemerides"
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The original claim and presumed size of the planet was revised when the full seven-planet system was revealed in 2017:
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Barr, Amy C.; Dobos, Vera; Kiss, László L. (2018). "Interior structures and tidal heating in the TRAPPIST-1 planets".
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solutions have a little water surviving beyond the early hot phase in the planet's history. Most models by the
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concluded that TRAPPIST-1d might be a Venus-like exoplanet with an uninhabitable atmosphere. The planet is an
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Adams, Fred C.; Laughlin, Gregory; Graves, Genevieve J. M. "Red Dwarfs and the End of the Main
Sequence".
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A team of astronomers headed by Michaël Gillon of the
Institut d’Astrophysique et Géophysique at the
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1371:"NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star"
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Gillon, Michaël; Jehin, Emmanuël; Lederer, Susan M.; Delrez, Laetitia; et al. (May 2016).
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Agol, Eric; Dorn, Caroline; Grimm, Simon L.; Turbet, Martin; et al. (1 February 2021).
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1302:"Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1"
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1162:"Study brings new climate models of small star TRAPPIST 1's seven intriguing worlds"
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378:(about 40 percent the mass of the Earth), which orbits on the inner edge of the
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1202:"HEC: Exoplanets Calculator - Planetary Habitability Laboratory @ UPR Arecibo"
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1467:"Could these newly-discovered planets orbiting an ultracool dwarf host life?"
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and it may be very geologically active due to tidal squeezing as happens to
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1539:"Temperate Earth-sized planets transiting a nearby ultracool dwarf star"
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735:"Temperate Earth-sized planets transiting a nearby ultracool dwarf star"
647:(Transiting Planets and Planetesimals Small Telescope) telescope at the
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659:, to observe TRAPPIST-1 and search for orbiting planets. By utilising
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from the host star, or about 2.2% the distance between Earth and the
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1061:"Rocky-Planet-Like Atmospheres Are Possible on 3 TRAPPIST-1 Planets"
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1280:. Revista Mexicana de Astronomía y Astrofísica. pp. 46–49.
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1450:"AGO - Department of Astrophysics, Geophysics and Oceanography"
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for TRAPPIST-1d strongly converge on a Venus-like planet (
2990:
1177:"The Bizarre Planets That Could Be Humanity's New Homes"
683:
Artist's impression of the TRAPPIST-1 planetary system.
1537:
Gillon, Michaël; Jehin, Emmanuël; et al. (2016).
1375:
1059:
February 2018, Elizabeth Howell 07 (7 February 2018).
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1278:
Gravitational
Collapse: From Massive Stars to Planets
1109:"Early 2017 observations of TRAPPIST-1 with Spitzer"
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Artist's impression of TRAPPIST-1d (February 2018).
567:the gas needed to form new stars will be exhausted
5370:Near-Earth-sized exoplanets in the habitable zone
2667:Habitability of K-type main-sequence star systems
2662:Habitability of F-type main-sequence star systems
1113:Monthly Notices of the Royal Astronomical Society
561:will be one of the last remaining stars when the
2286:List of interstellar and circumstellar molecules
1156:
1154:
1512:"Three New Planets Are the Best Bets for Life"
16:Small Venus-like exoplanet orbiting TRAPPIST-1
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8:
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21:
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1084:: CS1 maint: numeric names: authors list (
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569:, and the remaining ones begin to die off.
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3149:(asteroid sample-return mission; Sep 2016)
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1829:Exoplanet orbital and physical parameters
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1175:Anders, Charlie Jane (13 February 2019).
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2697:List of potentially habitable exoplanets
714:List of potentially habitable exoplanets
5303:
725:
408:. The exoplanet was found by using the
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20:
3005:Geodynamics of terrestrial exoplanets
7:
2687:Habitability of yellow dwarf systems
2677:Habitability of neutron star systems
614:) with an uninhabitable atmosphere.
3030:Sudarsky's gas giant classification
2657:Habitability of binary star systems
941:"Stellar Parameters for Trappist-1"
565:is much older than it is now, when
3015:Nexus for Exoplanet System Science
2672:Habitability of natural satellites
14:
2682:Habitability of red dwarf systems
1253:Fraser Cain (15 September 2008).
1227:Fraser Cain (16 September 2008).
590:Habitability of red dwarf systems
5342:
5330:
5318:
5306:
5283:
5282:
3821:
3820:
3809:
3695:
3290:
3168:
3162:
3156:
3124:
2779:Stars with proto-planetary discs
2743:NASA Star and Exoplanet Database
2733:Extrasolar Planets Encyclopaedia
2221:Extraterrestrial sample curation
1852:
1732:
1722:
1721:
2692:Habitable zone for complex life
2130:Ultra-short period planet (USP)
1834:Methods of detecting exoplanets
557:) is 0.05% of that of the Sun.
525:(close to the boundary between
518:. The star has a mass of 0.089
2873:Discovered exoplanets by year
1:
5365:Exoplanets discovered in 2016
3889:Aquarius in Chinese astronomy
3137:(X-ray observatory; Feb 2016)
3000:Extrasolar planets in fiction
2647:Extraterrestrial liquid water
821:The Planetary Science Journal
618:orbit, TRAPPIST-1d is likely
429:Radius, mass, and temperature
3836:Category:2017 in outer space
3831:Category:2016 in outer space
3826:Category:2015 in outer space
3020:Planets in globular clusters
2637:Circumstellar habitable zone
1398:Astronomy & Astrophysics
1000:Astronomy & Astrophysics
888:Astronomy & Astrophysics
361:(13.1 °C; 55.5 °F)
3746:45P/Honda–Mrkos–Pajdušáková
3305:atmospheric composition of
2980:Exoplanet naming convention
2090:Planet/Brown dwarf boundary
1428:10.1051/0004-6361/201731992
1030:10.1051/0004-6361/201937392
918:10.1051/0004-6361/201732233
194:Argument of periastron
5411:
4862:HD 212771 b (Victoriapeak)
3526:2MASS J11193254–1137466 AB
2216:Extraterrestrial materials
1850:
587:
496:
5280:
5254:
5218:
4990:
4954:
4808:
3899:List of stars in Aquarius
3884:
3878:Constellation of Aquarius
3804:
3206:Asteroid close approaches
3154:
3141:ExoMars Trace Gas Orbiter
3094:
3043:Discoveries of exoplanets
3038:
2246:Interplanetary dust cloud
1784:
1716:
945:The Astrophysical Journal
612:runaway greenhouse effect
365:
150:Orbital period (sidereal)
26:
5385:Aquarius (constellation)
5201:WISE J224607.57−052635.0
3647:WISE J080822.18-644357.3
3143:(Mars orbiter; Mar 2016)
2748:Open Exoplanet Catalogue
2723:Nearby Habitable Systems
2609:Transit-timing variation
1255:"Temperature of the Sun"
976:10.3847/1538-4357/aaa023
608:University of Washington
533:) and a radius of 0.121
424:Physical characteristics
414:University of Washington
404:in the constellation of
220:Physical characteristics
4726:2MASS J21392676+0220226
3797:(Mars lander; Oct 2016)
3025:Small planet radius gap
2728:Exoplanet Data Explorer
2652:Galactic habitable zone
2226:Giant-impact hypothesis
1420:2018A&A...613A..37B
1022:2020A&A...640A.112D
910:2018A&A...613A..68G
92:Orbital characteristics
3816:Outer space portal
3459:OGLE-2007-BLG-349(AB)b
2985:Exoplanet phase curves
2823:Terrestrial candidates
2774:Multiplanetary systems
2738:NASA Exoplanet Archive
2421:Mean-motion resonances
2231:Gravitational collapse
2181:Circumstellar envelope
684:
503:The planet orbits an (
5375:Transiting exoplanets
3721:C/2016 R2 (PANSTARRS)
2860:Potentially habitable
2765:Exoplanetary systems
2707:Superhabitable planet
2466:F/Yellow-white dwarfs
2351:Sample-return mission
2251:Interplanetary medium
1609:. Exoplanet discovery
1229:"How Old is the Sun?"
682:
531:hydrogen-fusing stars
5390:Sub-Earth exoplanets
3464:OGLE-2012-BLG-0950Lb
3122:Space probe launches
2995:Extragalactic planet
2975:Carl Sagan Institute
2256:Interplanetary space
2171:Circumplanetary disk
1844:Planet-hosting stars
1144:10.1093/mnras/sty051
649:La Silla Observatory
643:in Belgium used the
5260:Astronomical events
3784:(end of mission to
3741:43P/Wolf–Harrington
3330:(retracted in 2022)
2336:Protoplanetary disk
2316:Planetary migration
2271:Interstellar medium
2050:Circumtriple planet
2045:Circumbinary planet
1727:Category:TRAPPIST-1
1575:10.1038/nature17448
1567:2016Natur.533..221G
1339:10.1038/nature21360
1331:2017Natur.542..456G
1286:2004RMxAC..22...46A
1208:on 5 September 2019
1135:2018MNRAS.475.3577D
967:2018ApJ...853...30V
843:2021PSJ.....2....1A
769:10.1038/nature17448
761:2016Natur.533..221G
641:University of Liège
69:Discovery date
58:Discovery site
23:
5181:Lyman-alpha blob 1
3716:53P/Van Biesbroeck
3469:Proxima Centauri b
3260:469219 Kamoʻoalewa
2301:Nebular hypothesis
2276:Interstellar space
2261:Interstellar cloud
2241:Internal structure
2176:Circumstellar disc
852:10.3847/psj/abd022
685:
661:transit photometry
574:apparent magnitude
485:. For comparison,
45:Discovered by
5294:
5293:
5276:
5275:
5250:
5249:
5214:
5213:
5017:
5016:
4986:
4985:
4950:
4949:
4804:
4803:
4680:212771 (Lionrock)
3844:
3843:
3755:Space exploration
3056:
3055:
2632:Astrooceanography
2266:Interstellar dust
2138:
2137:
2014:Ultra-hot Neptune
2009:Ultra-hot Jupiter
1958:Eccentric Jupiter
1808:Planetary science
1746:
1745:
1648:TRAPPIST-1 system
1551:(7602): 221–224.
1516:Popular Mechanics
1315:(7642): 456–460.
745:(7602): 221–224.
624:Jupiter's moon Io
596:greenhouse effect
369:
368:
5402:
5347:
5346:
5335:
5334:
5333:
5323:
5322:
5321:
5311:
5310:
5302:
5286:
5285:
5256:
5242:XMMXCS 2215-1738
5237:RXC J2211.7-0350
5220:
5028:
4992:
4956:
4810:
3914:
3871:
3864:
3857:
3848:
3824:
3823:
3814:
3813:
3812:
3770:orbit; Jul 2016)
3699:
3643:
3640:
3638:
3637:
3628:
3625:
3623:
3622:
3618:(471325) 2011 KT
3603:
3600:
3598:
3597:
3588:
3565:
3552:
3531:2MASS J2126–8140
3331:
3294:
3279:
3277:
3276:
3272:(164121) 2003 YT
3262:
3255:
3253:
3252:
3243:
3241:
3240:
3231:
3229:
3228:
3219:
3217:
3216:
3172:
3166:
3160:
3128:
3111:
3104:
3083:
3076:
3069:
3060:
3010:Neptunian desert
2396:Tidally detached
2331:Planet formation
2321:Planetary system
2211:Exozodiacal dust
2201:Disrupted planet
2125:Ultra-cool dwarf
2055:Disrupted planet
2040:Chthonian planet
1872:
1856:
1839:Planetary system
1773:
1766:
1759:
1750:
1738:Portal:Astronomy
1736:
1725:
1724:
1641:
1634:
1627:
1618:
1611:
1603:
1597:
1596:
1586:
1560:
1534:
1528:
1527:
1525:
1523:
1508:
1502:
1501:
1499:
1497:
1483:
1477:
1476:
1463:
1454:
1453:
1446:
1440:
1439:
1413:
1393:
1387:
1386:
1384:
1382:
1367:
1361:
1360:
1350:
1324:
1306:
1296:
1290:
1289:
1273:
1267:
1266:
1264:
1262:
1257:. Universe Today
1250:
1244:
1243:
1241:
1239:
1224:
1218:
1217:
1215:
1213:
1204:. Archived from
1198:
1192:
1191:
1189:
1187:
1172:
1166:
1165:
1158:
1149:
1148:
1146:
1128:
1119:(3): 3577–3597.
1103:
1090:
1089:
1083:
1075:
1073:
1071:
1056:
1050:
1049:
1015:
995:
989:
988:
978:
960:
936:
930:
929:
903:
882:
865:
864:
854:
836:
812:
799:
798:
788:
754:
730:
468:
457:
444:
360:
355:
332:
327:
318:
316:
300:
295:
294:
274:
264:
250:
240:
239:
205:
203:
187:
185:
171:
166:
162:
159:
143:
142:
138:
135:
121:
116:
112:
109:
79:Detection method
31:
24:
5410:
5409:
5405:
5404:
5403:
5401:
5400:
5399:
5355:
5354:
5353:
5341:
5331:
5329:
5319:
5317:
5305:
5297:
5295:
5290:
5272:
5246:
5224:Galaxy clusters
5210:
5159:
5013:
4982:
4946:
4800:
4781:WASP-6 (Márohu)
4714:
4670:206610 (Bosona)
4656:
4548:
4470:
4162:
3903:
3894:Aquarius Stream
3880:
3875:
3845:
3840:
3810:
3808:
3800:
3750:
3689:
3656:
3641:
3635:
3634:
3631:
3626:
3620:
3619:
3616:
3607:BOSS Great Wall
3601:
3595:
3594:
3591:
3586:
3574:SDSS J1240+6710
3563:
3550:
3536:
3329:
3282:
3274:
3273:
3270:
3258:
3250:
3249:
3246:
3238:
3237:
3234:
3226:
3225:
3222:
3214:
3213:
3212:(85990) 1999 JV
3210:
3191:
3173:
3167:
3161:
3152:
3116:
3113:
3107:
3105:
3100:
3090:
3087:
3057:
3052:
3048:Search projects
3034:
2963:
2752:
2711:
2613:
2585:Radial velocity
2525:
2481:K/Orange dwarfs
2471:G/Yellow dwarfs
2432:
2426:Titius–Bode law
2365:
2296:Molecular cloud
2196:Detached object
2147:
2145:
2134:
2120:Toroidal planet
2110:Sub-brown dwarf
2018:
1944:
1916:(Super-Mercury)
1889:Coreless planet
1865:
1863:
1857:
1848:
1812:
1780:
1777:
1747:
1742:
1712:
1666:
1650:
1645:
1615:
1614:
1604:
1600:
1536:
1535:
1531:
1521:
1519:
1510:
1509:
1505:
1495:
1493:
1485:
1484:
1480:
1465:
1464:
1457:
1448:
1447:
1443:
1395:
1394:
1390:
1380:
1378:
1377:(Press release)
1369:
1368:
1364:
1304:
1298:
1297:
1293:
1275:
1274:
1270:
1260:
1258:
1252:
1251:
1247:
1237:
1235:
1226:
1225:
1221:
1211:
1209:
1200:
1199:
1195:
1185:
1183:
1174:
1173:
1169:
1160:
1159:
1152:
1107:January 2018).
1105:
1104:
1093:
1076:
1069:
1067:
1058:
1057:
1053:
997:
996:
992:
938:
937:
933:
884:
883:
868:
814:
813:
802:
732:
731:
727:
722:
710:
637:
592:
586:
555:
552:
539:
536:
524:
521:
509:ultracool dwarf
501:
495:
475:
463:
455:
447:
442:
434:
431:
426:
392:, located 40.7
384:ultracool dwarf
353:
351:
348:
325:
323:
322:
314:
312:
309:
307:Surface gravity
292:
290:
289:
287:
284:
272:
262:
260:
248:
237:
235:
234:
232:
229:
201:
199:
196:
183:
181:
164:
160:
157:
155:
152:
140:
136:
133:
131:
114:
110:
107:
105:
102:
100:Semi-major axis
81:
49:Michaël Gillon
34:
17:
12:
11:
5:
5408:
5406:
5398:
5397:
5392:
5387:
5382:
5377:
5372:
5367:
5357:
5356:
5352:
5351:
5339:
5327:
5315:
5292:
5291:
5281:
5278:
5277:
5274:
5273:
5271:
5270:
5264:
5262:
5252:
5251:
5248:
5247:
5245:
5244:
5239:
5234:
5228:
5226:
5216:
5215:
5212:
5211:
5209:
5208:
5203:
5198:
5196:SMM J2135-0102
5193:
5188:
5183:
5178:
5173:
5171:Aquarius Dwarf
5167:
5165:
5161:
5160:
5158:
5157:
5152:
5147:
5142:
5137:
5132:
5127:
5122:
5117:
5112:
5107:
5102:
5097:
5092:
5087:
5082:
5077:
5072:
5067:
5062:
5057:
5052:
5047:
5042:
5036:
5034:
5025:
5019:
5018:
5015:
5014:
5012:
5011:
5006:
5000:
4998:
4988:
4987:
4984:
4983:
4981:
4980:
4975:
4970:
4964:
4962:
4952:
4951:
4948:
4947:
4945:
4944:
4939:
4934:
4929:
4924:
4919:
4914:
4909:
4904:
4899:
4894:
4889:
4884:
4879:
4874:
4869:
4864:
4859:
4854:
4849:
4844:
4839:
4834:
4829:
4824:
4818:
4816:
4806:
4805:
4802:
4801:
4799:
4798:
4793:
4788:
4783:
4778:
4773:
4768:
4763:
4758:
4753:
4748:
4743:
4738:
4733:
4728:
4722:
4720:
4716:
4715:
4713:
4712:
4707:
4702:
4697:
4692:
4687:
4682:
4677:
4672:
4666:
4664:
4658:
4657:
4655:
4654:
4649:
4644:
4639:
4634:
4629:
4624:
4619:
4614:
4609:
4604:
4599:
4594:
4589:
4584:
4579:
4574:
4569:
4564:
4558:
4556:
4550:
4549:
4547:
4546:
4541:
4536:
4531:
4526:
4521:
4516:
4511:
4506:
4501:
4496:
4491:
4486:
4480:
4478:
4472:
4471:
4469:
4468:
4463:
4458:
4453:
4448:
4443:
4438:
4433:
4428:
4423:
4418:
4413:
4408:
4403:
4398:
4393:
4388:
4383:
4378:
4373:
4368:
4363:
4358:
4353:
4348:
4343:
4338:
4333:
4328:
4323:
4318:
4313:
4308:
4303:
4298:
4293:
4288:
4283:
4278:
4273:
4268:
4263:
4258:
4253:
4248:
4243:
4238:
4233:
4228:
4223:
4218:
4213:
4208:
4203:
4198:
4193:
4188:
4183:
4178:
4172:
4170:
4164:
4163:
4161:
4160:
4153:
4148:
4143:
4138:
4133:
4128:
4123:
4118:
4113:
4108:
4103:
4098:
4093:
4088:
4083:
4078:
4073:
4068:
4063:
4058:
4053:
4048:
4043:
4038:
4033:
4028:
4023:
4018:
4013:
4008:
4003:
3998:
3993:
3988:
3983:
3978:
3973:
3968:
3963:
3958:
3953:
3948:
3943:
3938:
3933:
3928:
3926:α (Sadalmelik)
3922:
3920:
3911:
3905:
3904:
3902:
3901:
3896:
3891:
3885:
3882:
3881:
3876:
3874:
3873:
3866:
3859:
3851:
3842:
3841:
3839:
3838:
3818:
3805:
3802:
3801:
3799:
3798:
3789:
3771:
3758:
3756:
3752:
3751:
3749:
3748:
3743:
3738:
3733:
3728:
3723:
3718:
3713:
3711:460P/PanSTARRS
3708:
3702:
3700:
3691:
3690:
3688:
3687:
3682:
3677:
3672:
3666:
3664:
3658:
3657:
3655:
3654:
3649:
3644:
3629:
3614:
3609:
3604:
3589:
3581:
3576:
3571:
3566:
3564:(hypothesized)
3558:
3553:
3544:
3542:
3538:
3537:
3535:
3534:
3528:
3523:
3518:
3513:
3512:
3511:
3506:
3501:
3491:
3486:
3481:
3476:
3471:
3466:
3461:
3456:
3451:
3446:
3441:
3436:
3431:
3426:
3421:
3416:
3411:
3406:
3405:
3404:
3399:
3394:
3389:
3379:
3374:
3369:
3368:
3367:
3362:
3357:
3352:
3347:
3337:
3332:
3324:
3319:
3314:
3309:
3303:
3297:
3295:
3284:
3283:
3281:
3280:
3268:
3263:
3256:
3244:
3232:
3220:
3208:
3202:
3200:
3193:
3192:
3190:
3189:
3183:
3181:
3175:
3174:
3155:
3153:
3151:
3150:
3144:
3138:
3131:
3129:
3118:
3117:
3115:
3114:
3106:
3098:
3095:
3092:
3091:
3088:
3086:
3085:
3078:
3071:
3063:
3054:
3053:
3051:
3050:
3045:
3039:
3036:
3035:
3033:
3032:
3027:
3022:
3017:
3012:
3007:
3002:
2997:
2992:
2987:
2982:
2977:
2971:
2969:
2965:
2964:
2962:
2961:
2960:
2959:
2954:
2949:
2944:
2939:
2934:
2929:
2924:
2919:
2914:
2909:
2904:
2899:
2894:
2889:
2884:
2879:
2870:
2869:
2868:
2867:
2862:
2857:
2852:
2851:
2850:
2845:
2840:
2835:
2825:
2820:
2815:
2810:
2805:
2800:
2795:
2784:
2783:
2782:
2781:
2776:
2771:
2762:
2760:
2754:
2753:
2751:
2750:
2745:
2740:
2735:
2730:
2725:
2719:
2717:
2713:
2712:
2710:
2709:
2704:
2699:
2694:
2689:
2684:
2679:
2674:
2669:
2664:
2659:
2654:
2649:
2644:
2639:
2634:
2629:
2623:
2621:
2615:
2614:
2612:
2611:
2606:
2605:
2604:
2597:Transit method
2594:
2593:
2592:
2582:
2581:
2580:
2570:
2565:
2564:
2563:
2553:
2552:
2551:
2544:Direct imaging
2541:
2535:
2533:
2527:
2526:
2524:
2523:
2518:
2513:
2508:
2503:
2498:
2493:
2488:
2483:
2478:
2473:
2468:
2463:
2458:
2453:
2448:
2442:
2440:
2434:
2433:
2431:
2430:
2429:
2428:
2423:
2418:
2413:
2405:
2400:
2399:
2398:
2388:
2387:
2386:
2375:
2373:
2367:
2366:
2364:
2363:
2361:Star formation
2358:
2356:Scattered disc
2353:
2348:
2343:
2338:
2333:
2328:
2323:
2318:
2313:
2308:
2303:
2298:
2293:
2288:
2283:
2278:
2273:
2268:
2263:
2258:
2253:
2248:
2243:
2238:
2233:
2228:
2223:
2218:
2213:
2208:
2206:Excretion disk
2203:
2198:
2193:
2188:
2183:
2178:
2173:
2168:
2163:
2161:Accretion disk
2158:
2152:
2150:
2140:
2139:
2136:
2135:
2133:
2132:
2127:
2122:
2117:
2112:
2107:
2102:
2097:
2092:
2087:
2082:
2077:
2072:
2070:Eyeball planet
2067:
2062:
2057:
2052:
2047:
2042:
2037:
2032:
2026:
2024:
2020:
2019:
2017:
2016:
2011:
2006:
2001:
1996:
1991:
1986:
1981:
1976:
1971:
1966:
1960:
1954:
1952:
1946:
1945:
1943:
1942:
1937:
1932:
1927:
1922:
1917:
1911:
1906:
1901:
1896:
1891:
1886:
1880:
1878:
1869:
1859:
1858:
1851:
1849:
1847:
1846:
1841:
1836:
1831:
1826:
1820:
1818:
1814:
1813:
1811:
1810:
1805:
1804:
1803:
1802:
1801:
1785:
1782:
1781:
1778:
1776:
1775:
1768:
1761:
1753:
1744:
1743:
1741:
1740:
1729:
1717:
1714:
1713:
1711:
1710:
1705:
1700:
1695:
1690:
1685:
1680:
1674:
1672:
1668:
1667:
1665:
1664:
1658:
1656:
1652:
1651:
1646:
1644:
1643:
1636:
1629:
1621:
1613:
1612:
1598:
1529:
1503:
1478:
1455:
1441:
1388:
1362:
1291:
1268:
1245:
1233:Universe Today
1219:
1193:
1167:
1150:
1091:
1051:
990:
931:
866:
800:
724:
723:
721:
718:
717:
716:
709:
706:
705:
704:
700:
699:
695:
694:
690:
689:
665:habitable zone
653:Atacama desert
636:
633:
620:tidally locked
585:
582:
553:
550:
537:
534:
522:
519:
497:Main article:
494:
491:
474:
471:
453:
440:
430:
427:
425:
422:
418:eyeball planet
410:transit method
380:habitable zone
367:
366:
363:
362:
346:
340:
334:
333:
310:
305:
302:
301:
285:
279:
276:
275:
270:
258:
252:
251:
246:
230:
225:
222:
221:
217:
216:
211:
207:
206:
197:
192:
189:
188:
179:
173:
172:
153:
148:
145:
144:
129:
123:
122:
103:
98:
95:
94:
88:
87:
82:
77:
74:
73:
70:
66:
65:
60:
54:
53:
47:
41:
40:
36:
35:
32:
15:
13:
10:
9:
6:
4:
3:
2:
5407:
5396:
5395:2MASS objects
5393:
5391:
5388:
5386:
5383:
5381:
5378:
5376:
5373:
5371:
5368:
5366:
5363:
5362:
5360:
5350:
5345:
5340:
5338:
5328:
5326:
5316:
5314:
5309:
5304:
5300:
5289:
5279:
5269:
5266:
5265:
5263:
5261:
5257:
5253:
5243:
5240:
5238:
5235:
5233:
5230:
5229:
5227:
5225:
5221:
5217:
5207:
5204:
5202:
5199:
5197:
5194:
5192:
5189:
5187:
5184:
5182:
5179:
5177:
5174:
5172:
5169:
5168:
5166:
5162:
5156:
5153:
5151:
5148:
5146:
5143:
5141:
5138:
5136:
5133:
5131:
5128:
5126:
5123:
5121:
5118:
5116:
5113:
5111:
5108:
5106:
5103:
5101:
5098:
5096:
5093:
5091:
5088:
5086:
5083:
5081:
5078:
5076:
5073:
5071:
5068:
5066:
5063:
5061:
5058:
5056:
5053:
5051:
5048:
5046:
5043:
5041:
5038:
5037:
5035:
5033:
5029:
5026:
5024:
5020:
5010:
5009:Saturn Nebula
5007:
5005:
5002:
5001:
4999:
4997:
4993:
4989:
4979:
4976:
4974:
4971:
4969:
4966:
4965:
4963:
4961:
4960:Star clusters
4957:
4953:
4943:
4940:
4938:
4935:
4933:
4930:
4928:
4925:
4923:
4920:
4918:
4915:
4913:
4910:
4908:
4905:
4903:
4900:
4898:
4895:
4893:
4890:
4888:
4885:
4883:
4880:
4878:
4875:
4873:
4870:
4868:
4865:
4863:
4860:
4858:
4855:
4853:
4850:
4848:
4845:
4843:
4840:
4838:
4835:
4833:
4830:
4828:
4825:
4823:
4820:
4819:
4817:
4815:
4811:
4807:
4797:
4794:
4792:
4789:
4787:
4784:
4782:
4779:
4777:
4774:
4772:
4771:Sneden's Star
4769:
4767:
4764:
4762:
4759:
4757:
4754:
4752:
4749:
4747:
4744:
4742:
4739:
4737:
4734:
4732:
4729:
4727:
4724:
4723:
4721:
4717:
4711:
4708:
4706:
4703:
4701:
4698:
4696:
4693:
4691:
4688:
4686:
4683:
4681:
4678:
4676:
4673:
4671:
4668:
4667:
4665:
4663:
4659:
4653:
4650:
4648:
4645:
4643:
4640:
4638:
4635:
4633:
4630:
4628:
4625:
4623:
4620:
4618:
4615:
4613:
4610:
4608:
4605:
4603:
4600:
4598:
4595:
4593:
4590:
4588:
4585:
4583:
4580:
4578:
4575:
4573:
4570:
4568:
4565:
4563:
4560:
4559:
4557:
4555:
4551:
4545:
4542:
4540:
4537:
4535:
4532:
4530:
4527:
4525:
4522:
4520:
4517:
4515:
4512:
4510:
4507:
4505:
4502:
4500:
4497:
4495:
4492:
4490:
4487:
4485:
4482:
4481:
4479:
4477:
4473:
4467:
4464:
4462:
4459:
4457:
4454:
4452:
4449:
4447:
4444:
4442:
4439:
4437:
4434:
4432:
4429:
4427:
4424:
4422:
4419:
4417:
4414:
4412:
4409:
4407:
4404:
4402:
4399:
4397:
4394:
4392:
4389:
4387:
4384:
4382:
4379:
4377:
4374:
4372:
4369:
4367:
4364:
4362:
4359:
4357:
4354:
4352:
4349:
4347:
4344:
4342:
4339:
4337:
4334:
4332:
4329:
4327:
4324:
4322:
4319:
4317:
4314:
4312:
4309:
4307:
4304:
4302:
4299:
4297:
4294:
4292:
4289:
4287:
4284:
4282:
4279:
4277:
4274:
4272:
4269:
4267:
4264:
4262:
4259:
4257:
4254:
4252:
4249:
4247:
4244:
4242:
4239:
4237:
4234:
4232:
4229:
4227:
4224:
4222:
4219:
4217:
4214:
4212:
4209:
4207:
4204:
4202:
4199:
4197:
4194:
4192:
4189:
4187:
4184:
4182:
4179:
4177:
4174:
4173:
4171:
4169:
4165:
4159:
4158:
4154:
4152:
4149:
4147:
4144:
4142:
4139:
4137:
4134:
4132:
4129:
4127:
4124:
4122:
4119:
4117:
4114:
4112:
4109:
4107:
4104:
4102:
4099:
4097:
4094:
4092:
4089:
4087:
4084:
4082:
4079:
4077:
4074:
4072:
4069:
4067:
4064:
4062:
4059:
4057:
4054:
4052:
4049:
4047:
4044:
4042:
4039:
4037:
4034:
4032:
4029:
4027:
4024:
4022:
4019:
4017:
4014:
4012:
4009:
4007:
4004:
4002:
3999:
3997:
3994:
3992:
3989:
3987:
3984:
3982:
3979:
3977:
3974:
3972:
3969:
3967:
3964:
3962:
3959:
3957:
3954:
3952:
3949:
3947:
3944:
3942:
3939:
3937:
3936:γ (Sadachbia)
3934:
3932:
3931:β (Sadalsuud)
3929:
3927:
3924:
3923:
3921:
3919:
3915:
3912:
3910:
3906:
3900:
3897:
3895:
3892:
3890:
3887:
3886:
3883:
3879:
3872:
3867:
3865:
3860:
3858:
3853:
3852:
3849:
3837:
3833:
3832:
3827:
3819:
3817:
3807:
3806:
3803:
3796:
3794:
3790:
3787:
3783:
3782:
3777:
3776:
3772:
3769:
3765:
3764:
3760:
3759:
3757:
3753:
3747:
3744:
3742:
3739:
3737:
3734:
3732:
3729:
3727:
3724:
3722:
3719:
3717:
3714:
3712:
3709:
3707:
3704:
3703:
3701:
3698:
3692:
3686:
3683:
3681:
3678:
3676:
3673:
3671:
3668:
3667:
3665:
3663:
3659:
3653:
3650:
3648:
3645:
3639:
3630:
3624:
3615:
3613:
3610:
3608:
3605:
3599:
3590:
3585:
3582:
3580:
3577:
3575:
3572:
3570:
3567:
3562:
3559:
3557:
3554:
3549:
3546:
3545:
3543:
3539:
3532:
3529:
3527:
3524:
3522:
3519:
3517:
3514:
3510:
3507:
3505:
3502:
3500:
3497:
3496:
3495:
3492:
3490:
3487:
3485:
3482:
3480:
3477:
3475:
3472:
3470:
3467:
3465:
3462:
3460:
3457:
3455:
3452:
3450:
3447:
3445:
3442:
3440:
3437:
3435:
3432:
3430:
3427:
3425:
3422:
3420:
3417:
3415:
3412:
3410:
3407:
3403:
3400:
3398:
3395:
3393:
3390:
3388:
3385:
3384:
3383:
3380:
3378:
3375:
3373:
3370:
3366:
3363:
3361:
3358:
3356:
3353:
3351:
3348:
3346:
3343:
3342:
3341:
3338:
3336:
3333:
3328:
3325:
3323:
3320:
3318:
3315:
3313:
3310:
3308:
3304:
3302:
3301:38 Virginis b
3299:
3298:
3296:
3293:
3289:
3285:
3278:
3269:
3267:
3264:
3261:
3257:
3254:
3245:
3242:
3233:
3230:
3221:
3218:
3209:
3207:
3204:
3203:
3201:
3199:
3194:
3188:
3185:
3184:
3182:
3180:
3179:Impact events
3176:
3171:
3165:
3159:
3148:
3145:
3142:
3139:
3136:
3133:
3132:
3130:
3127:
3123:
3119:
3110:
3103:
3097:
3096:
3093:
3089:2016 in space
3084:
3079:
3077:
3072:
3070:
3065:
3064:
3061:
3049:
3046:
3044:
3041:
3040:
3037:
3031:
3028:
3026:
3023:
3021:
3018:
3016:
3013:
3011:
3008:
3006:
3003:
3001:
2998:
2996:
2993:
2991:
2988:
2986:
2983:
2981:
2978:
2976:
2973:
2972:
2970:
2966:
2958:
2955:
2953:
2950:
2948:
2945:
2943:
2940:
2938:
2935:
2933:
2930:
2928:
2925:
2923:
2920:
2918:
2915:
2913:
2910:
2908:
2905:
2903:
2900:
2898:
2895:
2893:
2890:
2888:
2885:
2883:
2880:
2878:
2875:
2874:
2872:
2871:
2866:
2863:
2861:
2858:
2856:
2853:
2849:
2846:
2844:
2841:
2839:
2836:
2834:
2831:
2830:
2829:
2826:
2824:
2821:
2819:
2816:
2814:
2811:
2809:
2806:
2804:
2801:
2799:
2796:
2794:
2791:
2790:
2789:
2786:
2785:
2780:
2777:
2775:
2772:
2770:
2767:
2766:
2764:
2763:
2761:
2759:
2755:
2749:
2746:
2744:
2741:
2739:
2736:
2734:
2731:
2729:
2726:
2724:
2721:
2720:
2718:
2714:
2708:
2705:
2703:
2700:
2698:
2695:
2693:
2690:
2688:
2685:
2683:
2680:
2678:
2675:
2673:
2670:
2668:
2665:
2663:
2660:
2658:
2655:
2653:
2650:
2648:
2645:
2643:
2640:
2638:
2635:
2633:
2630:
2628:
2625:
2624:
2622:
2620:
2616:
2610:
2607:
2603:
2600:
2599:
2598:
2595:
2591:
2588:
2587:
2586:
2583:
2579:
2576:
2575:
2574:
2571:
2569:
2566:
2562:
2559:
2558:
2557:
2554:
2550:
2547:
2546:
2545:
2542:
2540:
2537:
2536:
2534:
2532:
2528:
2522:
2521:Yellow giants
2519:
2517:
2514:
2512:
2509:
2507:
2504:
2502:
2499:
2497:
2494:
2492:
2489:
2487:
2484:
2482:
2479:
2477:
2474:
2472:
2469:
2467:
2464:
2462:
2459:
2457:
2454:
2452:
2449:
2447:
2444:
2443:
2441:
2439:
2435:
2427:
2424:
2422:
2419:
2417:
2414:
2412:
2409:
2408:
2406:
2404:
2401:
2397:
2394:
2393:
2392:
2389:
2385:
2382:
2381:
2380:
2377:
2376:
2374:
2372:
2368:
2362:
2359:
2357:
2354:
2352:
2349:
2347:
2344:
2342:
2339:
2337:
2334:
2332:
2329:
2327:
2324:
2322:
2319:
2317:
2314:
2312:
2309:
2307:
2304:
2302:
2299:
2297:
2294:
2292:
2291:Merging stars
2289:
2287:
2284:
2282:
2279:
2277:
2274:
2272:
2269:
2267:
2264:
2262:
2259:
2257:
2254:
2252:
2249:
2247:
2244:
2242:
2239:
2237:
2234:
2232:
2229:
2227:
2224:
2222:
2219:
2217:
2214:
2212:
2209:
2207:
2204:
2202:
2199:
2197:
2194:
2192:
2189:
2187:
2184:
2182:
2179:
2177:
2174:
2172:
2169:
2167:
2166:Asteroid belt
2164:
2162:
2159:
2157:
2154:
2153:
2151:
2149:
2141:
2131:
2128:
2126:
2123:
2121:
2118:
2116:
2113:
2111:
2108:
2106:
2105:Pulsar planet
2103:
2101:
2098:
2096:
2093:
2091:
2088:
2086:
2083:
2081:
2078:
2076:
2073:
2071:
2068:
2066:
2063:
2061:
2060:Double planet
2058:
2056:
2053:
2051:
2048:
2046:
2043:
2041:
2038:
2036:
2033:
2031:
2028:
2027:
2025:
2021:
2015:
2012:
2010:
2007:
2005:
2002:
2000:
1999:Super-Neptune
1997:
1995:
1994:Super-Jupiter
1992:
1990:
1987:
1985:
1982:
1980:
1977:
1975:
1972:
1970:
1969:Helium planet
1967:
1964:
1961:
1959:
1956:
1955:
1953:
1951:
1947:
1941:
1938:
1936:
1933:
1931:
1928:
1926:
1923:
1921:
1918:
1915:
1912:
1910:
1907:
1905:
1904:Hycean planet
1902:
1900:
1897:
1895:
1894:Desert planet
1892:
1890:
1887:
1885:
1884:Carbon planet
1882:
1881:
1879:
1877:
1873:
1870:
1868:
1860:
1855:
1845:
1842:
1840:
1837:
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374:, is a small
373:
364:
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349:
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286:
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67:
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61:
59:
55:
52:
48:
46:
42:
37:
30:
25:
19:
5337:Solar System
5268:SN 2213-1745
5004:Helix Nebula
4916:
4832:Gliese 876 b
4827:Gliese 849 b
4766:LS IV-14 116
4155:
3829:
3793:Schiaparelli
3792:
3779:
3773:
3761:
3736:144P/Kushida
3521:V830 Tauri b
3508:
3454:Kepler-1647b
3449:Kepler-1638b
3444:Kepler-1625b
3439:Kepler-1520b
3434:Kepler-1229b
3327:HD 131399 Ab
3317:Gliese 536 b
2865:Proper names
2642:Earth analog
2627:Astrobiology
2619:Habitability
2556:Microlensing
2516:White dwarfs
2486:M/Red dwarfs
2476:Herbig Ae/Be
2461:Brown dwarfs
2403:Rogue planet
2384:Interstellar
2326:Planetesimal
2095:Planetesimal
2075:Giant planet
2065:Ecumenopolis
1963:Mini-Neptune
1899:Dwarf planet
1687:
1606:
1601:
1548:
1542:
1532:
1520:. Retrieved
1518:. 2 May 2016
1515:
1506:
1494:. Retrieved
1490:
1481:
1472:The Guardian
1470:
1444:
1401:
1397:
1391:
1379:. Retrieved
1374:
1365:
1312:
1308:
1294:
1277:
1271:
1259:. Retrieved
1248:
1236:. Retrieved
1222:
1210:. Retrieved
1206:the original
1196:
1184:. Retrieved
1181:The Atlantic
1180:
1170:
1116:
1112:
1068:. Retrieved
1064:
1054:
1003:
999:
993:
948:
944:
934:
891:
887:
824:
820:
742:
738:
728:
675:
668:
638:
629:
616:
604:
600:
593:
584:Habitability
578:
571:
559:
527:brown dwarfs
502:
476:
450:
437:
432:
400:) away from
371:
370:
343:
267:
243:
127:Eccentricity
50:
18:
5325:Spaceflight
5186:PGC 1228197
5176:ESO 603-G21
4907:TRAPPIST-1b
4872:HD 222582 b
4867:HD 221416 b
4857:HD 210277 b
4852:HD 206610 b
4822:ψ Aquarii b
3788:; Sep 2016)
3706:252P/LINEAR
3685:ASASSN-16ma
3680:ASASSN-16kt
3670:ASASSN-15lh
3642:(announced)
3627:(announced)
3612:GRB 160625B
3602:(announced)
3587:(announced)
3561:Planet Nine
3551:(announced)
3541:Discoveries
3516:TW Hydrae b
3429:Kepler-737b
3335:HD 164922 c
3307:55 Cancri e
3187:DN160822 03
2877:before 2000
2793:Discoveries
2568:Polarimetry
2456:Binary star
2346:Rubble pile
2341:Ring system
2311:Outer space
2281:Kuiper belt
2236:Hills cloud
2191:Debris disk
2186:Cosmic dust
2115:Sub-Neptune
2100:Protoplanet
2035:Brown dwarf
2023:Other types
1979:Hot Neptune
1974:Hot Jupiter
1965:(Gas dwarf)
1940:Super-Earth
1925:Ocean world
1920:Lava planet
1914:Iron planet
1876:Terrestrial
1817:Main topics
1381:25 February
1261:19 February
1238:19 February
1186:10 February
1070:10 February
572:The star's
546:metallicity
448:0.388
435:0.788
420:candidate.
394:light-years
372:TRAPPIST-1d
338:Temperature
265:0.012
227:Mean radius
177:Inclination
72:May 2, 2016
22:TRAPPIST-1d
5380:TRAPPIST-1
5359:Categories
5232:Abell 2597
5206:J2345-0449
4978:Messier 73
4973:Messier 72
4814:Exoplanets
4776:TRAPPIST-1
4736:Gliese 849
4731:BD−22 5866
3971:κ (Situla)
3946:ε (Albali)
3675:SN 2016aps
3494:TRAPPIST-1
3424:Kepler-56d
3419:Kepler-20g
3322:HD 19467 b
3312:BD+20 594b
3288:Exoplanets
3147:OSIRIS-REx
2788:Exoplanets
2769:Host stars
2716:Catalogues
2539:Astrometry
2501:Subdwarf B
2438:Host stars
2411:Retrograde
2306:Oort cloud
2144:Formation
2080:Mesoplanet
2004:Super-puff
1930:Mega-Earth
1909:Ice planet
1794:Definition
1779:Exoplanets
1662:TRAPPIST-1
1558:1605.07211
1411:1712.05641
1322:1703.01424
1212:8 February
1126:1801.02554
1013:2006.13826
958:1712.01911
901:1802.01377
834:2010.01074
752:1605.07211
720:References
588:See also:
516:TRAPPIST-1
499:TRAPPIST-1
464:4.35
390:TRAPPIST-1
328:0.19
214:TRAPPIST-1
4968:Messier 2
4168:Flamsteed
3991:ξ (Bunda)
3976:λ (Hydor)
3961:θ (Ancha)
3786:comet 67P
3766:(entered
3731:9P/Tempel
3556:IDCS 1426
3533:as planet
3340:HIP 41378
3196:Selected
2882:2000–2009
2848:1501–2000
2843:1001–1500
2531:Detection
2496:Red giant
2156:Accretion
2148:evolution
1989:Ice giant
1984:Gas giant
1935:Sub-Earth
1824:Exoplanet
1436:119516532
1065:Space.com
1046:220041987
1038:0004-6361
951:(1): 30.
861:222125312
777:1476-4687
635:Discovery
493:Host star
376:exoplanet
356:2.8
39:Discovery
5288:Category
5191:PHL 293B
5023:Galaxies
4476:Variable
3941:δ (Skat)
3726:81P/Wild
3584:GW151226
3579:Crater 2
3548:GW150914
3489:Qatar-5b
3484:Qatar-4b
3479:Qatar-3b
3474:Pr0211 c
3414:KELT-11b
3377:K2-332 b
3112: »
2838:501–1000
2818:Heaviest
2798:Extremes
2506:Subgiant
2379:Exocomet
1593:27135924
1357:28230125
1080:cite web
1006:: A112.
985:54034373
827:(1): 1.
795:27135924
708:See also
645:TRAPPIST
563:Universe
554:☉
538:☉
523:☉
406:Aquarius
63:TRAPPIST
5349:Science
5299:Portals
4996:Nebulae
4942:WASP-6b
4902:K2-138b
4796:WASP-75
4791:WASP-69
4786:WASP-47
4157:α PsA C
3775:Rosetta
3768:Jupiter
3694:Comets
3652:Virgo I
3633:2014 UZ
3593:2015 RR
3409:KELT-9b
3266:2016 PQ
3248:2016 EU
3236:2013 TX
3224:1994 WR
3099:«
2813:Largest
2808:Nearest
2511:T Tauri
2407:Orbits
2391:Exomoon
2371:Systems
2085:Planemo
1950:Gaseous
1671:Planets
1584:5321506
1563:Bibcode
1491:eso.org
1416:Bibcode
1404:: A37.
1348:5330437
1327:Bibcode
1282:Bibcode
1131:Bibcode
1018:Bibcode
963:Bibcode
926:3441829
906:Bibcode
894:: A68.
839:Bibcode
786:5321506
757:Bibcode
651:in the
487:Mercury
398:parsecs
382:of the
282:density
182:89.896°
85:Transit
4882:K2-72b
4877:K2-66b
4761:K2-138
4710:222582
4705:222093
4700:220689
4695:220466
4690:219617
4685:215152
4675:210277
4041:ψ (91)
3781:Philae
3569:GN-z11
3372:K2-33b
3135:Hitomi
2828:Kepler
2803:Firsts
2702:Tholin
2573:Timing
2491:Pulsar
2416:Trojan
2030:Blanet
1789:Planet
1731:
1720:
1591:
1581:
1544:Nature
1434:
1355:
1345:
1309:Nature
1044:
1036:
983:
924:
859:
793:
783:
775:
739:Nature
670:Nature
514:named
505:M-type
396:(12.5
296:
293:−0.163
291:+0.156
241:
238:−0.010
236:+0.011
200:−8.73°
186:0.077°
167:
117:
51:et al.
5313:Stars
5164:Other
4756:K2-72
4751:K2-58
4746:K2-28
4741:K2-21
4719:Other
3918:Bayer
3909:Stars
3662:Novae
3382:K2-72
2968:Other
2833:1–500
2758:Lists
1867:types
1862:Sizes
1553:arXiv
1522:2 May
1496:2 May
1432:S2CID
1406:arXiv
1317:arXiv
1305:(PDF)
1121:arXiv
1042:S2CID
1008:arXiv
981:S2CID
953:arXiv
922:S2CID
896:arXiv
857:S2CID
829:arXiv
747:arXiv
657:Chile
473:Orbit
402:Earth
352:286.2
317:0.019
313:0.624
288:4.354
280:Mean
261:0.388
233:0.788
204:6.17°
163:0.000
156:4.049
139:0.000
132:0.008
113:0.000
106:0.022
5155:7759
5150:7727
5145:7723
5140:7606
5135:7600
5130:7592
5125:7585
5120:7492
5115:7393
5110:7302
5105:7301
5100:7257
5095:7252
5090:7222
5085:7184
5080:7081
5075:7077
5070:7069
5065:7065
5060:7051
5055:7047
5050:7010
5045:7001
5040:6975
4652:9014
4647:8924
4642:8879
4637:8856
4632:8836
4627:8783
4622:8716
4617:8645
4612:8629
4607:8612
4602:8581
4597:8507
4592:8500
4587:8453
4582:8363
4577:8263
4572:8121
4567:8056
4562:8017
3763:Juno
3198:NEOs
3109:2017
3102:2015
2957:2024
2952:2023
2947:2022
2942:2021
2937:2020
2932:2019
2927:2018
2922:2017
2917:2016
2912:2015
2907:2014
2902:2013
2897:2012
2892:2011
2887:2010
2602:list
2590:list
2578:list
2561:list
2549:list
2146:and
1864:and
1655:Star
1589:PMID
1524:2016
1498:2016
1383:2017
1353:PMID
1263:2011
1240:2011
1214:2018
1188:2021
1086:link
1072:2021
1034:ISSN
791:PMID
773:ISSN
529:and
512:star
466:g/cm
460:Mars
387:star
324:6.11
298:g/cm
256:Mass
210:Star
5032:NGC
4466:100
3795:EDM
3636:224
3596:245
1799:IAU
1579:PMC
1571:doi
1549:533
1424:doi
1402:613
1343:PMC
1335:doi
1313:542
1139:doi
1117:475
1026:doi
1004:640
971:doi
949:853
914:doi
892:613
847:doi
781:PMC
765:doi
743:533
542:Sun
483:Sun
330:m/s
165:026
158:219
5361::
4662:HD
4554:HR
4544:LP
4539:IZ
4534:HU
4529:IL
4524:HK
4519:FO
4514:EZ
4509:EW
4504:EP
4499:DV
4494:AE
4461:97
4456:96
4451:94
4446:87
4441:85
4436:84
4431:82
4426:81
4421:78
4416:77
4411:75
4406:74
4401:72
4396:70
4391:67
4386:65
4381:64
4376:61
4371:60
4366:58
4361:56
4356:54
4351:51
4346:50
4341:49
4336:47
4331:45
4326:44
4321:42
4316:41
4311:40
4306:39
4301:37
4296:36
4291:35
4286:32
4281:30
4276:29
4271:28
4266:26
4261:24
4256:21
4251:20
4246:19
4241:18
4236:17
4231:16
4226:15
4221:14
4216:12
4211:11
4206:10
3834:—
3828:—
3778:/
3621:19
3251:85
3239:68
3227:12
2855:K2
1587:.
1577:.
1569:.
1561:.
1547:.
1541:.
1514:.
1489:.
1469:.
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1430:.
1422:.
1414:.
1400:.
1373:.
1351:.
1341:.
1333:.
1325:.
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1231:.
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1153:^
1137:.
1129:.
1115:.
1111:.
1094:^
1082:}}
1078:{{
1063:.
1040:.
1032:.
1024:.
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869:^
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823:.
819:.
803:^
789:.
779:.
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763:.
755:.
741:.
737:.
673:.
655:,
598:.
507:)
479:AU
454:🜨
441:🜨
350::
347:eq
271:🜨
247:🜨
141:93
134:37
119:AU
115:19
108:27
5301::
4937:h
4932:g
4927:f
4922:e
4917:d
4912:c
4897:e
4892:d
4887:c
4847:e
4842:d
4837:c
4489:U
4484:R
4201:9
4196:8
4191:7
4186:5
4181:4
4176:1
4151:k
4146:i
4141:i
4136:i
4131:h
4126:g
4121:g
4116:f
4111:e
4106:d
4101:c
4096:c
4091:c
4086:b
4081:b
4076:b
4071:A
4066:A
4061:ω
4056:ω
4051:ψ
4046:ψ
4036:χ
4031:φ
4026:υ
4021:τ
4016:τ
4011:σ
4006:ρ
4001:π
3996:ο
3986:ν
3981:μ
3966:ι
3956:η
3951:ζ
3870:e
3863:t
3856:v
3509:d
3504:c
3499:b
3402:e
3397:d
3392:c
3387:b
3365:f
3360:e
3355:d
3350:c
3345:b
3275:1
3215:6
3082:e
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3068:v
2451:B
2446:A
1772:e
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1758:v
1708:h
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1678:b
1640:e
1633:t
1626:v
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1555::
1526:.
1500:.
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1329::
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1284::
1265:.
1242:.
1216:.
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1164:.
1147:.
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1074:.
1048:.
1028::
1020::
1010::
987:.
973::
965::
955::
928:.
916::
908::
898::
863:.
849::
841::
831::
825:2
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767::
759::
749::
551:L
535:R
520:M
451:M
438:R
358:K
354:±
344:T
326:±
320:g
315:±
268:M
263:±
244:R
202:±
184:±
169:d
161:±
137:±
111:±
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