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373:, nearly the same as the Sun, which has a temperature of 5778 K. The star's age is estimated to be about 4.16 billion years old, about 440 million years younger than the Sun, which is 4.6 billion years old. The radius of the star has not been directly known, but given the same mass as the Sun, HIP 11915 likely has a radius of around 1.01
404:
The discovery of HIP 11915 b marked a significant breakthrough in the astronomy news. Because of its orbital distance and mass are just about the same as
Jupiter, astronomers began to predict that star systems with Jupiter-like planets at the right orbital distance could have terrestrial planets in
452:
Megan Bedell, from the
University of Chicago and lead author of the paper, concludes: âAfter two decades of hunting for exoplanets, we are finally beginning to see long-period gas giant planets similar to those in our own Solar System thanks to the long-term stability of planet hunting instruments
395:
HIP 11915 b orbits its host star with an orbital period of 10 years and an orbital radius of about 4.8 times that of Earth's (nearly the same as
Jupiter, which has an orbital distance of around 5.2 AU). Its eccentricity is 0.1, slightly higher than Jupiter's, meaning it has an orbit slightly more
519:
Bedell, M.; Melendez, J.; Bean, J. L.; Ramirez, I.; Asplund, M.; Alves-Brito, A.; Casagrande, L.; Dreizler, S.; Monroe, T.; Spina, L.; Maia, M. Tucci (July 14, 2015). "The Solar Twin Planet Search II. A Jupiter twin around a solar twin".
565:
440:
team that discovered HIP 11915 b, "the quest for an Earth 2.0, and for a complete Solar System 2.0, is one of the most exciting endeavors in astronomy". This means that there is the chance that HIP 11915 may have undetected
649:
Dos Santos, Leonardo A.; et al. (2016). "The Solar Twin Planet Search: IV. The Sun as a typical rotator and evidence for a new rotational braking law for Sun-like stars".
408:
While several Jovian-sized planets have been discovered, most have been found orbiting close to their stars. It is now hypothesized that
Jupiter's movement in the Solar System
987:
387:, or how bright it appears from Earth's perspective, is 8.58. Therefore, HIP 11915 is too dim to be seen with the naked eye, but can be seen with good binoculars.
765:. Using the apparent magnitude of HIP 11915 and its distance from Earth (using the uncertainty parameter of ±10 light years), this yields a range of 1.03â1.27
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935:
820:
335:). Based on models, it is expected to have a temperature of around 118 K (â155 °C; â247 °F). This is nearly the same as the planet
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26:
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like HARPS. This discovery is, in every respect, an exciting sign that other solar systems may be out there waiting to be discovered.â
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789:. When run into simulations using the orbital distance of HIP 11915 and its planet, yields a result of 118 K.
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closer in, at a distance ranging from 0.5â1.6 AU. The possibilities even extend outwards for the chance of a
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eccentric. This would not have any effect on any residing planets near the star, though.
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772:. When used in the default 190 light-year distance (with margin of error) is
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284:. It orbits its star at a distance of approximately 4.8
566:"Discovery of Jupiter's twin points to Solar System 2"
31:
An artist's impression of the exoplanet HIP 11915 b.
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405:the inner portion, like the Solar System does.
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361:star that is just about the same mass of the
296:of the host star suggest an orbiting object.
8:
19:
16:Extrasolar planet in the constellation Cetus
490:"Jupiter Twin Discovered Around Solar Twin"
871:
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25:
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432:According to Jorge Meléndez, who led the
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412:for the rocky inner planets, including
288:. The exoplanet was found by using the
228:118 K (â155 °C; â247 °F)
380:, making it the same size as the Sun.
18:
7:
892:(technology demonstration; Dec 2015)
292:, where periodic Doppler shifts of
272:) from Earth in the constellation
14:
702:Fraser Cain (16 September 2008).
623:Fraser Cain (15 September 2008).
1569:
1568:
1557:
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1139:
940:
934:
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864:
597:Extrasolar Planets Encyclopaedia
369:). It has a temperature of 5760
1:
1610:Exoplanets discovered in 2015
911:(weather satellite; Feb 2015)
886:(weather satellite; Jan 2015)
763:CalcTool luminosity converter
1584:Category:2016 in outer space
1579:Category:2015 in outer space
1574:Category:2014 in outer space
761:This was obtained using the
651:Astronomy & Astrophysics
522:Astronomy & Astrophysics
305:Mass, radius and temperature
917:(space telescope; Sep 2015)
681:10.1051/0004-6361/201628558
544:10.1051/0004-6361/201525748
447:habitable Earth-like planet
1626:
1545:orbit insertion; Dec 2015)
1521:(end of mission; Apr 2015)
1513:orbit insertion; Mar 2015)
1370:1SWASP J093010.78+533859.5
346:
1552:
1472:67P/ChuryumovâGerasimenko
988:Asteroid close approaches
926:
834:
428:Solar System similarities
400:Significance in astronomy
232:
139:Orbital period (sidereal)
24:
1365:WISE J224607.57â052635.0
625:"Temperature of the Sun"
410:may have cleared the way
300:Physical characteristics
174:Physical characteristics
673:2016A&A...592A.156D
434:University of SĂŁo Paulo
94:Orbital characteristics
1564:Outer space portal
1501:; Nov 2014 / Mar 2015)
1406:(first observation of
290:radial velocity method
1451:C/2014 Q1 (PanSTARRS)
959:2015 Kerala meteoroid
704:"How Old is the Sun?"
449:to form around 1 AU.
964:2015 Thailand bolide
862:Space probe launches
726:"Jupiter Has A Twin"
463:Upsilon Andromedae e
61:La Silla Observatory
1441:C/2014 Q2 (Lovejoy)
1408:gravitational waves
1390:541132 LeleÄkĆ«honua
901:Space observatories
570:The Daily Telegraph
443:terrestrial planets
71:Discovery date
56:Discovery site
21:
1456:C/2015 G2 (MASTER)
604:on 26 January 2020
592:"Planet HIP 11915"
385:apparent magnitude
43:Discovered by
1592:
1591:
1486:Space exploration
924:
923:
420:, HIP 11915 is a
309:HIP 11915 b is a
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81:Detection method
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1109:(85989) 1999 JD
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732:. 16 July 2015
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629:Universe Today
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572:. 20 July 2015
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1161:Gliese 1132 b
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951:Impact events
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829:2015 in space
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1385:Tabby's Star
1213:
1156:Gliese 436 b
876:Space probes
795:
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734:. Retrieved
730:Apex Tribune
729:
720:
708:. Retrieved
697:
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632:. Retrieved
618:
606:. Retrieved
602:the original
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574:. Retrieved
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493:. Retrieved
451:
431:
407:
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394:
382:
352:
319:minimum mass
308:
282:Solar System
261:, or nearly
238:
237:
211:
122:Eccentricity
1533:; Jul 2015)
1375:ASASSN-15lh
1360:(announced)
1333:Discoveries
1314:51 Pegasi b
1311:spectrum of
1301:KOI-4878.01
1296:Kepler-453b
1291:Kepler-452b
1286:Kepler-451b
1259:Kepler-442b
1254:Kepler-440b
1249:Kepler-438b
1214:HIP 11915 b
1171:HD 164595 b
1166:HD 155233 b
1150:Aldebaran b
1042:1566 Icarus
710:19 February
634:19 February
383:The star's
317:. It has a
255:light-years
239:HIP 11915 b
224:Temperature
181:Mean radius
20:HIP 11915 b
1599:Categories
1529:(flyby of
1497:(orbiting
1477:10P/Tempel
1467:(Catalina)
1446:88P/Howell
1436:15P/Finlay
1324:Wolf 1061c
1264:Kepler-444
1137:Exoplanets
664:1606.06214
535:1507.03998
469:References
367:solar twin
253:about 190
247:solar twin
209:0.06
1518:MESSENGER
1499:comet 67P
1462:C/2013 US
1357:EGS-zs8-1
1319:WASP-121b
1306:LkCa 15 b
1176:HD 219134
978:Selected
552:0004-6361
355:HIP 11915
349:HIP 11915
343:Host star
251:HIP 11915
243:exoplanet
168:HIP 11915
112:0.1
74:July 2015
37:Discovery
1538:Akatsuki
1415:GW151226
1403:GW150914
1395:VFTS 352
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915:Astrosat
852: »
787:☉
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689:53533614
657:: A156.
457:See also
378:☉
321:of 0.99
48:Meléndez
1494:Rosetta
1424:Comets
1380:EGSY8p7
1341:2015 BP
1121:2015 SO
1085:2007 VE
1073:2015 TB
1061:2015 TC
1049:2015 HM
1018:2015 AZ
994:2015 BP
839:«
669:Bibcode
608:17 July
576:13 July
528:: A34.
495:16 July
422:G-class
357:, is a
337:Jupiter
315:Jupiter
278:Jupiter
259:parsecs
1352:US 708
1239:K2-24c
1234:K2-24b
1229:K2-22b
1224:K2-18b
909:DSCOVR
736:6 July
687:
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438:Brazil
424:star.
359:G-type
241:is an
151:days (
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1605:Cetus
1543:Venus
1531:Pluto
1511:Ceres
1219:K2-3d
779:â0.09
777:+0.11
749:Notes
685:S2CID
659:arXiv
530:arXiv
414:Earth
391:Orbit
328:(315
274:Cetus
263:1.798
249:star
153:10.49
87:HARPS
65:Chile
1506:Dawn
980:NEOs
884:SMAP
849:2016
842:2014
774:1.07
738:2016
712:2011
636:2011
610:2015
578:2016
548:ISSN
497:2015
257:(57
205:0.99
200:Mass
164:Star
145:3830
131:0.07
1344:519
1088:191
1076:145
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677:doi
655:592
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526:581
418:Sun
365:(a
363:Sun
186:~1
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108:4.8
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