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Great conjunction

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3247: 3235: 3259: 3291: 605:= 59.58 is, so Earth will be closer to the same position in its orbit and conjunctions will appear more similar. All series will have progressions where conjunctions gradually shift from only visible before sunrise to visible throughout the night to only visible after sunset and finally back to the morning sky again. The location in the sky of each conjunction in a series should increase in longitude by 16.3 degrees on average, making one full cycle relative to the stars on average once every 2,634 years. If instead we use the convention of measuring longitude eastward from the First Point of Aries, we have to keep in mind that the equinox circulates 3223: 3177: 369: 474: 3303: 3101: 3279: 33: 210: 4194: 378: 4218: 4170: 4206: 4182: 490:
the two inclinations. Indeed, between year 1 and 3000, the maximum conjunction distances were 1.3 degrees in 1306 and 1940. Conjunctions in both years occurred when the planets were tilted most out of the plane: longitude 206 degrees (therefore above the plane) in 1306, and longitude 39 degrees (therefore below the plane) in 1940.
3188:. This great conjunction was also the most easily visible close conjunction since 1226 (as the previous close conjunctions in 1563 and 1623 were closer to the Sun and therefore more difficult to see). It occurred seven weeks after the heliocentric conjunction, when Jupiter and Saturn shared the same heliocentric longitude. 3258: 3191:
The closest separation occurred on 21 December at 18:20 UTC, when Jupiter was 0.1° south of Saturn and 30° east of the Sun. This meant both planets appeared together in the field of view of most small- and medium-sized telescopes (though they were distinguishable from each other without optical aid).
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the astronomers found Jupiter and Saturn so close to each other that Jupiter covered Saturn (actual angular separation was 6.8 minutes on 25 August 1563). The Alfonsine tables suggested that the conjunction should be observed on another day but on the day indicated by the Alfonsine tables the angular
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was ascribed to each triangular pattern. Particular importance was accorded to the occurrence of a great conjunction in a new trigon, which is bound to happen after some 240 years at most. Even greater importance was attributed to the beginning of a new cycle after all fours trigons had been visited.
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Because 19.859 years is equal to 1.674 Jupiter orbits and 0.674 Saturn orbits, three of these periods come close to a whole number of revolutions. As successive great conjunctions occur nearly 120° apart, their appearances form a triangular pattern. In a series, every third conjunction returns after
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Clusterings of several planets were considered even more significant. The Chinese apparently remembered the clustering of all five planets in 1953 BC, and noted the clustering of all but Venus in 1576 BC and of all five in 1059 BC. These were connected in Chinese thought to the founding of the first
3326:: one partial on 16 February, and one total on 17 June. Superimposition requires a separation of less than approximately 0.4 arcminutes. This will be the first occultation between the two planets since 6857 BC, and the only instance of two occultations within the same year in maybe a million years. 489:
of both planets are similar (100.6 degrees for Jupiter and 113.7 degrees for Saturn), meaning if Saturn is above or below Earth's orbital plane Jupiter usually is too. Because these nodes align so well it would be expected that no closest approach will ever be much worse than the difference between
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The three points of the triangle revolve in the same direction as the planets at the rate of approximately one-sixth of a revolution per four centuries, thus creating especially close conjunctions on an approximately four-century cycle. Currently the longitudes of close great conjunctions are about
191:. The intervals involved, of 377.8 years (19 great conjunction intervals) and 516.4 years (26 great conjunction intervals) bring Mars back to approximately the same position. Further repeats of the 516-year period lead to the clustering in AD 1524, considered ominous in Europe at the time of the 469:
against divination was issued in 1586 but as nothing significant happened by the feared event of 1603, public interest rapidly died. By the start of the next trigon, modern scientific consensus had condemned astrology as pseudoscience, and astronomers no longer perceived planetary alignments as
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of Jupiter (4332.59 days) and Saturn (10759.22 days), respectively. This is about 52 days less than 20 years, but in practice, Earth's orbit size can cause great conjunctions to reoccur anytime between 18 years 10 months and 20 years 8 months after the previous one. (See table below.) Since the
3168:, who noticed that the Copernican and Ptolemaic tables used to predict the conjunction were inaccurate. This led him to realise that progress in astronomy required systematic, rigorous observation, night after night, using the most accurate instruments obtainable. 309: 3234: 464:
began, belief in the significance of such events generated a stream of publications that grew steadily until the end of the 16th century. As the great conjunction of 1583 was last in the water trigon it was widely supposed to herald apocalyptic changes; a
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During the closest approach, both planets appeared to be a binary object to the naked eye. From mid-northern latitudes, the planets were visible one hour after sunset at less than 15° in altitude above the southwestern horizon in the constellation of
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and less difficult elsewhere. Note that the exact moment of conjunction cannot be seen everywhere as it is below the horizon or it is daytime in some places, but a place on Earth affects minimum separation less than it would if an
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Medieval astrologers usually gave 960 years as the duration of the full cycle, perhaps because in some cases it took 240 years to pass from one trigon to the next. If a cycle is defined by when the conjunctions return to the same
589:(which are Sun–Moon conjunctions). Conjunctions in a particular series occur about 119.16 years apart. The reason it is every six conjunctions instead of every three is that 119.16 years is closer to a whole number of years than 567:
from the Sun in degrees. An elongation between around −20 and +20 degrees indicates that the Sun is close enough to the conjunction to make it difficult or impossible to see, sometimes more difficult at some geographic
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separation was a full 141 minutes. The Cracow professors suggested following the more accurate Copernican predictions and between 1578 and 1580 Copernican heliocentrism was lectured on three times by Valentin Fontani.
3246: 616:. In a triple conjunction, the series does not advance by one each event as the constellation and year is the same or close to it, this is the only time great conjunctions can be less than about 20 years apart. 3290: 3222: 577:
was involved. Negative elongations indicate the planet is west of the Sun (visible in the morning sky), whereas positive elongations indicate the planet is east of the Sun (visible in the evening sky).
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The most recent great conjunction occurred on 21 December 2020, and the next will occur on 4 November 2040. During the 2020 great conjunction, the two planets were separated in the sky by 6
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Using sidereal periods, this comes to about 836 years. But the return must be a whole number of conjunction intervals, such as 794, 854, or 913 years. However, for returning to the same
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at their closest point, which was the closest distance between the two planets since 1623. The closeness is the result of the conjunction occurring in the vicinity of one of the two
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some 60 years to the vicinity of the first. These returns are observed to be shifted by some 8° relative to the fixed stars, so no more than four of them occur in the same
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The great conjunction of 2020 was the closest since 1623 and eighth closest of the first three millennia AD, with a minimum separation between the two planets of 6.1
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The conjunction attracted considerable media attention, with news sources calling it the "Christmas Star" due to the proximity of the date of the conjunction to
4077: 3302: 87:, when the two planets appear closest together in the sky. Great conjunctions occur approximately every 20 years when Jupiter "overtakes" Saturn in its 3120:
might have been the occurrence of a great conjunction. He calculated that a triple conjunction of Jupiter and Saturn occurred in 7 BC (−6 using
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Cumulative distribution of separation distance of great conjunctions between AD 1200 and AD 2400 (blue), and an approximation formula (red)
4149: 3978: 3935: 3819: 3528: 3955: 195:, and the upcoming clustering of September 2040, which will involve all five planets again, in a longitude span of less than 7°. 3140:, Stanisław Jakobejusz, Nicolaus Schadeck, Petrus Probosczowicze, and others) observed the great conjunction of 1563 to compare 3669: 3025:
Morning, not easy to see from high northern latitudes and the South Pole area due to a low height above the horizon and/or
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they were a topic broached by the pre-scientific and transitional astronomer-astrologers of the period up to the time of
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After about 220 years the pattern shifts to the next trigon, and in about 800 or 900 years returns to the first trigon.
4055: 3121: 304:{\displaystyle {\frac {1}{\left({\frac {1}{J}}-{\frac {1}{S}}\right)}}\approx 7253.46\;\mathrm {days} \displaystyle ,} 498:
The following table details great conjunctions in between 1200 and 2400. The dates are given for the conjunctions in
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equivalent periods of other naked-eye planet pairs are all under 900 days, this makes great conjunctions the rarest.
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and happens within months). The most recent triple conjunction occurred in 1980–81 and the next will be in 2238–39.
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standards): separations of less than 10 arcminutes have only happened four times since 1200, most recently in 2020.
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omens. However, in the year 1962, when all five planets formed a cluster 17° wide, there was considerable concern.
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Occasionally there is more than one great conjunction in a season, which happens whenever they're close enough to
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Great conjunction photographed on December 19, 2020, with a 360 mm (14 in) SCT telescope and color CCD.
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or midnight twilight; this is not mentioned when the conjunction is easily visible from most of each hemisphere.
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where the two orbits appear to intersect when viewed from the Sun (which has a point of view similar to Earth).
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was translated in the 12th century, a modern edition-translation by K. Yamamoto and Ch. Burnett, Leiden, 2000
3811: 502:(the dates for conjunctions in ecliptic longitude can differ by several days). Dates before 1582 are in the 218: 76: 3808:
Religion and the Decline of Magic: Studies in Popular Beliefs in Sixteenth and Seventeenth-Century England
639: 560: 338:(which is not exclusive to great conjunctions). In this scenario, Jupiter and Saturn will occupy the same 331: 3831: 106:
The spacing between the planets varies from conjunction to conjunction with most events being 0.5 to 1.3
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Jupiter and Saturn's great conjunctions repeat every ~120°, Saturn's path relative to Jupiter in blue.
368: 3860: 3335: 2707: 517: 118:). Very close conjunctions happen much less frequently (though the maximum of 1.3° is still close by 4238: 4222: 3523:, ed. Massimo Ciavolella and Amilcare A. Iannucci (Toronto: Dovehouse Editions, 1993), pp. 151-72. 3228:
Photograph taken two days before closest approach with a separation of approximately 15 arcminutes.
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of the equinox point both extended upwards indefinitely; ecliptic separations are usually smaller.
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Photograph of the great conjunction of 2020 taken two days before closest approach with the four
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Aston, Margaret (1970). "The Fiery Trigon Conjunction: An Elizabethan Astrological Prediction".
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As well as being a triple conjunction, the great conjunction of 7541 is expected to feature two
3100: 473: 4146: 3931: 3815: 3765: 3588: 3524: 3208: 3204: 3117: 545: 450: 437: 157: 92: 4253: 4174: 4095: 3599: 3549: 3397: 3145: 3141: 632: 606: 564: 533: 525: 485:
is inclined 2.485 degrees relative to Earth's, and Jupiter's is inclined 1.303 degrees. The
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on three occasions, depending on which definition of "conjunction" one uses (this is due to
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Great conjunctions attracted considerable attention in the past as omens. During the late
56: 4100:"Was an occultation of Saturn by Jupiter ever seen, or will it ever be seen from Earth?" 2904:
Evening, hard to see from high northern latitudes, not visible in Antarctic (poor angle,
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Diagram showing the movements of Jupiter and Saturn during the 1980–81 triple conjunction
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There is always at least a small area around one or both poles that cannot see due to
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photograph of the great conjunction of 2020 four hours before closest approach, with
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of Roger Bacon, ed. J. H. Bridges, Oxford: Clarendon Press, 1897, Vol. I, p. 263.
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Distance is the angular separation between the planets in sixtieths of a degree (
91:. They are named "great" for being by far the rarest of the conjunctions between 17: 3323: 3193: 3165: 180: 168: 153: 145: 141: 137: 4099: 460:
Despite mathematical errors and some disagreement among astrologers about when
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Separation of Jupiter and Saturn around the time of the 2020 great conjunction
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Morning, not easy to impossible to see from parts of the Southern Hemisphere
3472: 3200: 3105: 377: 172: 115: 111: 52: 44: 160:, and they are mentioned in popular and literary works by authors such as 4128: 3490:
Woody, K. M. (1977). "Dante and the Doctrine of the Great Conjunctions".
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The exceptional conjunction of Jupiter and Saturn on December 21, 2020!
4056:"5 upcoming conjunctions visible in the night sky, and how to see them" 3296:
Photograph depicting the great conjunction, taken from Syracuse, Italy.
100: 80: 40: 4124: 3956:"Witness the Great Conjunction of Jupiter and Saturn on December 21st" 3104:
A simulated view of the great conjunction of 7 BC as viewed from
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constellation. Usually the conjunctions occur in one of the following
3788:, Journal of the Royal Astronomical Society of Canada, Vol. 94, p.174 2695:
List of close great conjunctions consisting of all events under 9.95
454: 221:(each of which is 365.25 days). This number can be calculated by the 96: 84: 48: 528:, thus being suited for calculations of the locations of stars. (In 4181: 3553: 3039:
Events closer than 9.95 arcmin AD 1–3000, sorted by direction
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designate the periods of Jupiter and Saturn then the return takes
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307.4 and 127.4 degrees, in Capricornus and Cancer respectively.
363: 161: 88: 31: 4031:"2020: December 21: The Great Conjunction of Jupiter and Saturn" 4004:"2020: December 21: The Great Conjunction of Jupiter and Saturn" 3309: 3519:, “Saturn in Conjunction: From Albumasar to Lope de Vega.” in 217:
On average, great conjunction seasons occur once every 19.859
3979:"2020, November 2: Jupiter – Saturn Heliocentric Conjunction" 3284:
December 21, 2020, Jupiter and Saturn, 130mm Bresser Messier
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Evening, hard to see (especially from Northern Hemisphere).
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Dante Studies, with the Annual Report of the Dante Society
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latitude and longitude are based on the ecliptic which is
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De Concordia astronomice Veritatis et narrations historic
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Morning, hard to see from mid and high northern latitudes
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The closest conjunction of the first three millennia AD.
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The great conjunction series is roughly analogous to the
524:. This non-rotating coordinate system doesn't move with 4134:
The December 21, 2020 Conjunction of Jupiter and Saturn
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between AD 1 and 3000, plus other notable events.
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rather than to the same constellation, then because of
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Simulated best-case scenario view through a telescope.
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from the First Point of Aries and is based on Earth's
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is measured counterclockwise from the location of the
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Kepler's trigon, a diagram of great conjunctions from
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and the 46th century AD. Part of triple conjunction.
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Journal of the Royal Astronomical Society of Canada
3670:"1623: The Great Conjunction of Jupiter and Saturn" 3589:"Astrological origins of Chinese dynastic ideology" 3043: 2643: 2516: 2373: 453:apparently led to the use of precessing signs, and 3752: 2973:Evening, easier to see in the Southern Hemisphere. 303: 3928:Letting the soul fly among the turrets of the sky 536:extended sunward and anti-sunward indefinitely.) 3032:The closest conjunction in almost 14,400 years. 4125:Orbital Motion Simulation of Jupiter and Saturn 3203:, and for a great conjunction being one of the 538:The other common conjunction coordinate system 3887:The Star of Bethlehem: The Legacy of the Magi 3112:When studying the great conjunction of 1603, 520:(the location of the March equinox) at epoch 457:gave a value of 794 years (40 conjunctions). 449:the cycle is less than 800 years. Use of the 132:Astrological aspect § Great conjunctions 27:Conjunction of the planets Jupiter and Saturn 8: 3924:Att låta själen flyga mellan himlens tinnar 3764:, periods must be used with respect to the 3949: 3947: 3308:Photograph of Jupiter and Saturn with the 3037: 2693: 2637: 2510: 2367: 618: 281: 3736: 3722: 3711: 3706: 3272:can also be seen to the right of Saturn.) 2639:Number of events 1200–2400 by triplicity 2512:Number of events 1200–2400 by elongation 494:List of great conjunctions (1200 to 2400) 282: 258: 245: 235: 233: 3930:]. Stockholm: Atlantis. p. 45. 3911:. New York: Roy Publishers. p. 320. 3663: 3661: 3659: 3632: 3630: 3628: 3521:Saturn from Antiquity to the Renaissance 3438: 2915:longitude close to the ideal 317 degree 2369:Number of events 1200–2400 by closeness 472: 208: 4165: 3485: 3483: 3436: 3434: 3432: 3430: 3428: 3426: 3424: 3422: 3420: 3418: 3388: 3347: 3218: 4249:Conjunctions (astronomy and astrology) 3977:Hunt, Jeffrey L. (11 September 2020). 3778: 3776: 3774: 3164:This conjunction was also observed by 2919:intersection longitude for closeness ( 2808:Morning, part of a triple conjunction. 4029:Hunt, Jeffrey L. (11 December 2019). 3902: 3900: 3668:Hunt, Jeffrey L. (20 February 2020). 3639:"The December 2020 Great Conjunction" 7: 3444:"Jupiter-Saturn Conjunction Series" 2824:Too close to the Sun to be visible. 612:A conjunction can be a member of a 114:, or 1 to 2.5 times the width of a 4110:from the original on 22 July 2016. 4076:Clark, Stuart (14 December 2020). 3847:"Kepler and the Star of Bethlehem" 3785:Conjunctions of Jupiter and Saturn 3768:, giving about 763 years. See Etz. 506:while dates after 1582 are in the 292: 289: 286: 283: 25: 3396:Ford, Dominic (20 October 2020). 152:, by scholastic thinkers such as 4216: 4204: 4192: 4180: 4168: 4084:– via www.theguardian.com. 3954:Jacob Dickey (6 December 2020). 3301: 3289: 3277: 3257: 3245: 3233: 3221: 2741:The closest conjunction between 540:is measured counterclockwise in 376: 367: 179:three historical dynasties, the 3744: 3716: 3108:on the evening of 12 November. 2993:hinders viewing in Antarctica. 526:the precession of Earth's axes 1: 3358:while dates after are in the 3354:Dates before 1582 are in the 2652:part of a triple conjunction 3753:{\displaystyle 1/(5/S-2/J).} 3604:10.1016/0083-6656(95)00007-0 2152:Depends on observer latitude 1972:Depends on observer latitude 1924:Depends on observer latitude 1853:Depends on observer latitude 1828:Depends on observer latitude 1717:Depends on observer latitude 1537:Depends on observer latitude 1397:Depends on observer latitude 1102:Depends on observer latitude 767:Depends on observer latitude 673:Depends on observer latitude 425:Cancer, Pisces, and Scorpius 419:Taurus, Capricorn, and Virgo 412:of zodiacal constellations: 3885:Molnar, Michael R. (1999). 3619:"Ephemerides for Year 2040" 3122:astronomical year numbering 422:Gemini, Aquarius, and Libra 416:Aries, Sagittarius, and Leo 342:on three occasions or same 4275: 3845:Burke-Gaffney, W. (1937). 2717:Separation (in arcminutes) 2712:non-rotating/star tracking 2690:Notable great conjunctions 607:once every c. 25,772 years 348:apparent retrograde motion 202: 129: 3922:Håkansson, Håkan (2006). 3575:De magnis coniunctionibus 3268:visible around Jupiter. ( 3205:hypothesized explanations 3132:The astronomers from the 3079: 3065: 3051: 3046: 2665: 2651: 2646: 2622: 2608: 2594: 2580: 2566: 2552: 2538: 2524: 2519: 2493: 2479: 2465: 2451: 2437: 2423: 2409: 2395: 2381: 2376: 2178: 2090: 1743: 1655: 1312: 971: 793: 436:In astrology, one of the 175:'s book on conjunctions. 3909:Copernicus and his World 3907:Kesten, Hermann (1945). 3891:Rutgers University Press 3154:Copernican heliocentrism 4152:6 December 2020 at the 4142:(in French and English) 4035:When the Curves Line Up 4008:When the Curves Line Up 3983:When the Curves Line Up 3812:Oxford University Press 3674:When the Curves Line Up 3047:Number of conjunctions 3044:Longitude (from Earth) 3029:or "midnight twilight". 2647:Number of conjunctions 2520:Number of conjunctions 2377:Number of conjunctions 3797:See previous footnote. 3754: 3616:September 12, 2040 in 3587:D.W.Pankenier (1995). 3181: 3109: 478: 305: 214: 68: 3832:"Planets for dessert" 3755: 3517:Frederick A. de Armas 3179: 3103: 2840:Evening, hard to see. 2792:Evening, hard to see. 2759:Evening, hard to see. 2623:+135 to +180 degrees 2525:−180 to −135 degrees 476: 306: 212: 35: 4244:Astrological aspects 3814:, 1971) p. 414-415, 3705: 3336:Positional astronomy 2708:Ecliptic coordinates 2609:+90 to +135 degrees 2539:−135 to −90 degrees 518:First Point of Aries 232: 3865:1937JRASC..31..417B 3596:Vistas in Astronomy 3398:"Great Conjunction" 3312:on 16 December 2020 3066:297 to 321 degrees 3052:119 to 138 degrees 3040: 2700: 2666:single conjunction 2640: 2595:+45 to +90 degrees 2553:−90 to −45 degrees 2513: 2370: 334:: this is called a 205:Celestial mechanics 199:Celestial mechanics 193:Radical Reformation 4147:Great Conjunctions 4010:. 11 December 2019 3750: 3360:Gregorian calendar 3182: 3110: 3038: 2750:28 December 424 BC 2694: 2638: 2511: 2480:70 to 78.6 arcmin 2368: 614:triple conjunction 508:Gregorian calendar 479: 344:ecliptic longitude 336:triple conjunction 301: 300: 215: 69: 3766:celestial equinox 3209:Star of Bethlehem 3207:for the biblical 3118:Star of Bethlehem 3116:thought that the 3093: 3092: 3036: 3035: 2743:prehistoric times 2686: 2685: 2679: 2678: 2636: 2635: 2581:0 to +45 degrees 2567:−45 to 0 degrees 2507: 2506: 2494:over 78.6 arcmin 2374:Angular distance 2361: 2360: 1908:18 September 2100 1134:17 September 1544 705:21 September 1246 451:Alphonsine tables 395: 394: 273: 266: 253: 93:naked-eye planets 73:great conjunction 18:Great Conjunction 16:(Redirected from 4266: 4221: 4220: 4219: 4209: 4208: 4207: 4197: 4196: 4195: 4185: 4184: 4173: 4172: 4171: 4164: 4143: 4112: 4111: 4096:Vitagliano, Aldo 4092: 4086: 4085: 4073: 4067: 4066: 4064: 4062: 4052: 4046: 4045: 4043: 4041: 4026: 4020: 4019: 4017: 4015: 4000: 3994: 3993: 3991: 3989: 3974: 3968: 3967: 3965: 3963: 3951: 3942: 3941: 3919: 3913: 3912: 3904: 3895: 3894: 3882: 3876: 3875: 3873: 3871: 3842: 3836: 3835: 3828: 3822: 3804: 3798: 3795: 3789: 3782:Etz D., (2000), 3780: 3769: 3759: 3757: 3756: 3751: 3740: 3726: 3715: 3700: 3696: 3691: 3685: 3684: 3682: 3680: 3665: 3654: 3653: 3651: 3649: 3634: 3623: 3622: 3614: 3608: 3607: 3593: 3584: 3578: 3572: 3566: 3565: 3537: 3531: 3514: 3508: 3507: 3487: 3478: 3470: 3464: 3458: 3452: 3451: 3440: 3413: 3412: 3410: 3408: 3393: 3376: 3369: 3363: 3352: 3305: 3293: 3281: 3261: 3249: 3237: 3225: 3146:geocentric model 3142:Alfonsine tables 3088: 3087: 3074: 3073: 3060: 3059: 3041: 2980:25 December 2874 2895:21 December 2020 2831:11 December 1166 2799:13 September 709 2701: 2674: 2673: 2660: 2659: 2641: 2631: 2630: 2617: 2616: 2603: 2602: 2589: 2588: 2575: 2574: 2561: 2560: 2547: 2546: 2533: 2532: 2514: 2502: 2501: 2488: 2487: 2474: 2473: 2466:60 to 70 arcmin 2460: 2459: 2452:50 to 60 arcmin 2446: 2445: 2438:40 to 50 arcmin 2432: 2431: 2424:30 to 40 arcmin 2418: 2417: 2410:20 to 30 arcmin 2404: 2403: 2396:10 to 20 arcmin 2390: 2389: 2371: 2364: 2316:18 February 2378 2153: 2073:6 September 2238 1981:20 February 2159 1973: 1925: 1854: 1829: 1812:21 December 2020 1718: 1701:18 February 1961 1681:14 February 1941 1615:8 September 1921 1592:28 November 1901 1538: 1398: 1249:24 February 1643 1203:17 December 1603 1103: 1063:17 November 1484 954:10 February 1425 776:24 December 1305 768: 751:31 December 1285 674: 619: 604: 602: 601: 598: 595: 565:angular distance 447:axial precession 380: 371: 364: 321: 317: 310: 308: 307: 302: 295: 274: 272: 268: 267: 259: 254: 246: 236: 95:(i.e. excluding 21: 4274: 4273: 4269: 4268: 4267: 4265: 4264: 4263: 4229: 4228: 4227: 4217: 4215: 4205: 4203: 4193: 4191: 4179: 4169: 4167: 4159: 4154:Wayback Machine 4141: 4121: 4116: 4115: 4094: 4093: 4089: 4075: 4074: 4070: 4060: 4058: 4054: 4053: 4049: 4039: 4037: 4028: 4027: 4023: 4013: 4011: 4002: 4001: 3997: 3987: 3985: 3976: 3975: 3971: 3961: 3959: 3953: 3952: 3945: 3938: 3921: 3920: 3916: 3906: 3905: 3898: 3884: 3883: 3879: 3869: 3867: 3844: 3843: 3839: 3834:. NASA Science. 3830: 3829: 3825: 3805: 3801: 3796: 3792: 3781: 3772: 3762:right ascension 3703: 3702: 3698: 3694: 3692: 3688: 3678: 3676: 3667: 3666: 3657: 3647: 3645: 3643:timeanddate.com 3637:Jones, Graham. 3636: 3635: 3626: 3617: 3615: 3611: 3591: 3586: 3585: 3581: 3573: 3569: 3539: 3538: 3534: 3515: 3511: 3498:(95): 119–134. 3489: 3488: 3481: 3471: 3467: 3459: 3455: 3448:sparky.rice.edu 3442: 3441: 3416: 3406: 3404: 3395: 3394: 3390: 3385: 3380: 3379: 3370: 3366: 3356:Julian calendar 3353: 3349: 3344: 3332: 3320: 3313: 3306: 3297: 3294: 3285: 3282: 3273: 3262: 3253: 3250: 3241: 3238: 3229: 3226: 3217: 3174: 3158:Prutenic Tables 3150:Prutenic Tables 3130: 3114:Johannes Kepler 3098: 3089: 3085: 3084: 3075: 3071: 3070: 3061: 3057: 3056: 2783:31 December 431 2729:1 March 1793 BC 2721: 2692: 2687: 2675: 2671: 2670: 2661: 2657: 2656: 2632: 2628: 2627: 2618: 2614: 2613: 2604: 2600: 2599: 2590: 2586: 2585: 2576: 2572: 2571: 2562: 2558: 2557: 2548: 2544: 2543: 2534: 2530: 2529: 2503: 2499: 2498: 2489: 2485: 2484: 2475: 2471: 2470: 2461: 2457: 2456: 2447: 2443: 2442: 2433: 2429: 2428: 2419: 2415: 2414: 2405: 2401: 2400: 2391: 2387: 2386: 2382:0 to 10 arcmin 2270:1 December 2338 2161:5 February 2279 2151: 2136:2 February 2259 2096:12 January 2239 2050:1 November 2219 1971: 1956:14 January 2140 1923: 1852: 1837:4 November 2040 1827: 1716: 1661:21 October 1940 1546:20 October 1861 1536: 1521:26 January 1842 1452:5 November 1782 1396: 1318:8 February 1683 1295:23 October 1682 1272:17 October 1663 1111:30 January 1524 1101: 931:16 January 1405 885:25 October 1365 766: 672: 642: 635: 628: 599: 596: 593: 592: 590: 542:right ascension 504:Julian calendar 500:right ascension 496: 487:ascending nodes 443:right ascension 384:Johannes Kepler 381: 372: 340:right ascension 324:orbital periods 319: 315: 244: 240: 230: 229: 207: 201: 150:Johannes Kepler 134: 128: 79:of the planets 28: 23: 22: 15: 12: 11: 5: 4272: 4270: 4262: 4261: 4256: 4251: 4246: 4241: 4231: 4230: 4226: 4225: 4213: 4201: 4189: 4177: 4157: 4156: 4144: 4136: 4131: 4120: 4119:External links 4117: 4114: 4113: 4087: 4068: 4047: 4021: 3995: 3969: 3943: 3937:978-9173531047 3936: 3914: 3896: 3877: 3837: 3823: 3806:Keith Thomas, 3799: 3790: 3770: 3749: 3746: 3743: 3739: 3735: 3732: 3729: 3725: 3721: 3718: 3714: 3710: 3686: 3655: 3624: 3609: 3579: 3567: 3554:10.1086/350618 3548:(2): 159–187. 3532: 3509: 3479: 3465: 3461:The Opus Majus 3453: 3414: 3387: 3386: 3384: 3381: 3378: 3377: 3364: 3346: 3345: 3343: 3340: 3339: 3338: 3331: 3328: 3319: 3316: 3315: 3314: 3307: 3300: 3298: 3295: 3288: 3286: 3283: 3276: 3274: 3266:Galilean moons 3263: 3256: 3254: 3251: 3244: 3242: 3239: 3232: 3230: 3227: 3220: 3216: 3213: 3173: 3170: 3134:Cracow Academy 3129: 3126: 3097: 3094: 3091: 3090: 3083: 3081: 3077: 3076: 3069: 3067: 3063: 3062: 3055: 3053: 3049: 3048: 3045: 3034: 3033: 3030: 3023: 3020: 3017: 3013: 3012: 3010: 3007: 3004: 3001: 2997: 2996: 2994: 2987: 2984: 2981: 2977: 2976: 2974: 2971: 2968: 2965: 2961: 2960: 2958: 2951: 2948: 2945: 2944:24 August 2417 2941: 2940: 2938: 2935: 2932: 2929: 2925: 2924: 2909: 2902: 2899: 2896: 2892: 2891: 2889: 2886: 2883: 2880: 2876: 2875: 2873: 2870: 2867: 2864: 2863:25 August 1563 2860: 2859: 2857: 2854: 2851: 2848: 2844: 2843: 2841: 2838: 2835: 2832: 2828: 2827: 2825: 2822: 2819: 2816: 2812: 2811: 2809: 2806: 2803: 2800: 2796: 2795: 2793: 2790: 2787: 2784: 2780: 2779: 2776: 2773: 2770: 2767: 2763: 2762: 2760: 2757: 2754: 2751: 2747: 2746: 2739: 2736: 2733: 2730: 2726: 2725: 2722: 2718: 2715: 2705: 2691: 2688: 2684: 2683: 2677: 2676: 2669: 2667: 2663: 2662: 2655: 2653: 2649: 2648: 2645: 2634: 2633: 2626: 2624: 2620: 2619: 2612: 2610: 2606: 2605: 2598: 2596: 2592: 2591: 2584: 2582: 2578: 2577: 2570: 2568: 2564: 2563: 2556: 2554: 2550: 2549: 2542: 2540: 2536: 2535: 2528: 2526: 2522: 2521: 2518: 2508: 2505: 2504: 2497: 2495: 2491: 2490: 2483: 2481: 2477: 2476: 2469: 2467: 2463: 2462: 2455: 2453: 2449: 2448: 2441: 2439: 2435: 2434: 2427: 2425: 2421: 2420: 2413: 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1456: 1453: 1449: 1448: 1445: 1442: 1439: 1436: 1433: 1430: 1426: 1425: 1422: 1419: 1416: 1413: 1410: 1407: 1406:30 August 1742 1403: 1402: 1399: 1394: 1391: 1388: 1385: 1382: 1381:5 January 1723 1378: 1377: 1374: 1371: 1368: 1365: 1362: 1359: 1355: 1354: 1351: 1348: 1345: 1342: 1339: 1335: 1334: 1331: 1328: 1325: 1322: 1319: 1315: 1314: 1311: 1308: 1305: 1302: 1299: 1296: 1292: 1291: 1288: 1285: 1282: 1279: 1276: 1273: 1269: 1268: 1265: 1262: 1259: 1256: 1253: 1250: 1246: 1245: 1242: 1239: 1236: 1233: 1230: 1227: 1223: 1222: 1219: 1216: 1213: 1210: 1207: 1204: 1200: 1199: 1196: 1193: 1190: 1187: 1184: 1181: 1177: 1176: 1173: 1170: 1167: 1164: 1161: 1158: 1157:25 August 1563 1154: 1153: 1150: 1147: 1144: 1141: 1138: 1135: 1131: 1130: 1127: 1124: 1121: 1118: 1115: 1112: 1108: 1107: 1104: 1099: 1096: 1093: 1090: 1087: 1083: 1082: 1079: 1076: 1073: 1070: 1067: 1064: 1060: 1059: 1056: 1053: 1050: 1047: 1044: 1041: 1037: 1036: 1033: 1030: 1027: 1024: 1021: 1018: 1014: 1013: 1010: 1007: 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Retrieved 4050: 4038:. Retrieved 4034: 4024: 4012:. Retrieved 4007: 3998: 3986:. Retrieved 3982: 3972: 3960:. Retrieved 3927: 3923: 3917: 3908: 3886: 3880: 3868:. Retrieved 3856: 3850: 3840: 3826: 3807: 3802: 3793: 3784: 3689: 3677:. Retrieved 3673: 3646:. Retrieved 3642: 3612: 3595: 3582: 3574: 3570: 3545: 3541: 3535: 3520: 3512: 3495: 3491: 3473: 3468: 3460: 3456: 3447: 3405:. Retrieved 3401: 3391: 3373:midnight sun 3367: 3350: 3324:occultations 3321: 3198: 3190: 3183: 3163: 3144:(based on a 3131: 3111: 3027:midnight sun 3016:8 March 4523 2913:heliocentric 2911:303+ degree 2879:16 July 1623 2847:4 March 1226 2680: 2644:Type of set 2224:12 July 2298 2027:8 April 2199 1933:15 July 2119 1862:8 April 2060 1769:25 July 1981 1749:6 March 1981 1498:18 June 1821 1475:16 July 1802 1226:17 July 1623 1040:7 April 1464 1017:13 July 1444 908:8 April 1385 819:19 July 1306 728:23 July 1265 682:4 March 1226 636:(arcminutes) 611: 583:Saros series 580: 575:inner planet 554: 512: 497: 480: 459: 435: 431: 428: 409: 405:triplicities 403: 396: 387: 352: 329: 313: 219:Julian years 216: 189:Zhou dynasty 177: 165:Lope de Vega 135: 120:inner planet 105: 72: 70: 67:are visible. 51:. The moons 29: 4211:Outer space 4199:Spaceflight 4104:solexorb.it 3962:20 December 3648:10 December 3407:22 December 3194:Capricornus 3166:Tycho Brahe 3148:) with the 2964:6 July 2477 2917:orbit plane 2815:22 July 769 2766:6 March 372 2517:Elongation 2293:22 May 2358 2004:28 May 2179 1789:28 May 2000 1358:21 May 1702 1338:17 May 1683 1086:25 May 1504 839:1 June 1325 649:Easy to see 483:orbit plane 181:Xia dynasty 169:Shakespeare 154:Roger Bacon 146:Tycho Brahe 142:Renaissance 138:Middle Ages 77:conjunction 4239:Astrometry 4233:Categories 3988:29 October 3402:In The Sky 3383:References 3186:arcminutes 3156:). In the 3152:(based on 2991:summer sun 2955:and Arctic 2906:summer sun 2720:Visibility 2697:arcminutes 2184:7 May 2279 1180:2 May 1583 640:Elongation 561:elongation 530:astrometry 467:papal bull 359:longitudes 355:arcminutes 332:opposition 187:, and the 130:See also: 126:In history 112:arcminutes 110:(30 to 78 45:arcminutes 4175:Astronomy 4061:17 August 4040:27 August 4014:11 August 3731:− 3679:24 August 3562:144351963 3201:Christmas 3106:Jerusalem 3096:7 BC 2989:Evening, 643:(degrees) 629:(degrees) 626:Longitude 570:latitudes 514:Longitude 481:Saturn's 314:in which 276:≈ 256:− 173:Albumasar 116:full moon 4150:Archived 4129:GeoGebra 4108:Archived 4098:(2011). 3504:40166243 3330:See also 633:Distance 550:meridian 548:and the 400:zodiacal 322:are the 225:formula 57:Ganymede 4254:Jupiter 4161:Portals 3861:Bibcode 3859:: 417. 3215:Gallery 3009:Morning 2872:Morning 2856:Morning 2775:Morning 2738:Evening 652:Triple 603:⁠ 591:⁠ 563:is the 546:equator 462:trigons 410:trigons 279:7253.46 108:degrees 101:Neptune 81:Jupiter 41:Jupiter 37:Stacked 4259:Saturn 3958:. WCIA 3934:  3870:27 May 3818:  3560:  3527:  3502:  3476:(1414) 3080:Other 3019:287.8° 3003:307.6° 2983:297.1° 2967:126.2° 2947:119.6° 2931:310.8° 2898:300.3° 2882:131.9° 2866:125.3° 2850:313.8° 2834:303.3° 2818:137.8° 2802:130.8° 2786:320.6° 2769:316.6° 2753:322.8° 2732:153.4° 2724:Notes 2681: 2193:−172.6 2105:+161.3 1758:−155.9 1670:−165.7 1327:+175.8 986:−141.6 963:+104.1 808:+170.7 646:Series 594:119.16 559:) and 455:Kepler 183:, the 97:Uranus 85:Saturn 63:, and 61:Europa 49:Saturn 47:below 4187:Stars 3926:[ 3592:(PDF) 3558:S2CID 3500:JSTOR 3342:Notes 3270:Titan 2921:J2000 2348:+58.2 2342:240.7 2325:+19.4 2319:343.7 2302:+50.7 2296:107.5 2273:237.3 2256:−51.8 2250:339.8 2227:100.6 2213:+73.3 2207:227.2 2187:229.9 2170:−80.3 2164:231.9 2145:+19.6 2139:329.6 2125:+89.9 2082:−67.6 2053:221.7 2036:−50.0 2030:325.6 2013:+16.1 1990:−50.3 1984:215.3 1965:+22.7 1959:315.1 1942:−37.8 1936:+73.2 1917:+29.5 1911:204.1 1894:−43.7 1888:310.8 1871:+41.7 1846:−24.6 1840:197.8 1821:+30.2 1815:300.3 1798:−14.6 1778:+62.7 1772:185.3 1752:188.3 1735:−91.4 1729:189.8 1710:−34.5 1704:295.7 1690:+73.3 1647:−89.8 1624:+11.1 1618:177.3 1601:+38.3 1595:285.4 1555:−39.5 1549:170.2 1530:−27.1 1524:281.1 1507:−62.9 1484:+41.3 1478:157.7 1461:+44.9 1455:271.1 1438:+14.5 1415:−10.3 1409:150.8 1390:−23.8 1384:265.1 1367:−53.5 1347:+77.5 1341:138.9 1321:141.1 1304:−71.8 1298:143.5 1281:+48.7 1275:254.8 1258:+18.8 1235:+12.9 1229:131.9 1212:−17.6 1206:253.8 1189:−51.2 1183:355.9 1166:−42.1 1160:125.3 1143:+53.4 1137:245.1 1120:+19.1 1114:345.8 1095:+33.5 1089:113.4 1072:−12.3 1066:240.2 1049:−52.6 1043:342.1 1026:−15.9 1020:106.9 1006:+62.6 1000:230.6 980:234.4 957:235.2 940:+18.1 934:332.1 917:+58.8 888:226.0 871:−52.5 865:328.2 828:+82.5 822:215.7 802:217.8 785:−70.0 779:220.4 760:+19.8 754:318.0 737:−58.5 714:+13.5 708:209.6 691:−48.6 685:313.8 666:+23.0 522:J2000 162:Dante 89:orbit 75:is a 65:Titan 4063:2020 4042:2020 4016:2020 3990:2020 3964:2020 3932:ISBN 3872:2020 3816:ISBN 3697:and 3681:2020 3650:2020 3542:Isis 3525:ISBN 3409:2020 3318:7541 3310:Moon 3172:2020 3128:1563 2704:Date 2345:65.9 2322:50.5 2299:18.5 2279:−7.4 2276:66.3 2253:41.8 2233:−6.0 2230:28.3 2219:Yes 2210:74.9 2199:Yes 2190:73.8 2179:Yes 2167:69.9 2142:33.3 2131:Yes 2122:45.3 2119:88.4 2111:Yes 2102:47.5 2099:90.2 2091:Yes 2079:39.3 2076:93.2 2059:+6.8 2056:63.1 2033:25.2 2010:49.5 2007:80.6 1987:71.2 1962:14.5 1939:57.5 1914:62.5 1868:67.5 1865:59.6 1843:72.8 1795:68.9 1792:52.6 1784:Yes 1775:67.6 1764:Yes 1755:63.3 1744:Yes 1732:63.7 1707:13.8 1696:Yes 1687:77.4 1684:39.9 1676:Yes 1667:74.1 1664:41.1 1656:Yes 1644:71.4 1641:45.2 1621:58.3 1598:26.5 1578:+3.8 1575:74.5 1572:33.0 1552:47.4 1527:32.3 1504:72.9 1501:27.1 1481:39.5 1458:44.6 1435:69.4 1432:15.6 1412:27.8 1387:47.7 1364:63.4 1361:10.8 1353:Yes 1344:15.8 1333:Yes 1324:11.6 1313:Yes 1301:15.4 1278:59.2 1255:59.3 1209:59.0 1186:52.9 1140:69.2 1117:46.1 1092:18.7 1069:68.3 1046:38.2 1023:28.5 1012:Yes 1003:76.3 992:Yes 983:72.4 972:Yes 960:70.7 937:29.3 914:43.2 911:94.4 894:−3.7 891:72.6 868:21.2 848:−0.4 845:49.2 842:87.2 834:Yes 825:78.6 814:Yes 805:75.5 794:Yes 782:71.5 757:10.6 734:57.3 731:79.9 711:62.3 663:65.3 660:66.8 622:Date 585:for 318:and 167:and 156:and 148:and 140:and 99:and 83:and 43:6–7 4127:at 3693:If 3600:doi 3550:doi 3124:); 3022:1.0 3006:9.3 2986:2.3 2970:6.3 2950:5.4 2934:6.0 2901:6.1 2885:5.2 2869:6.8 2853:2.1 2837:2.1 2821:4.3 2805:8.3 2789:6.2 2772:1.9 2756:1.5 2735:1.3 2357:No 2354:Yes 2334:No 2311:No 2308:Yes 2288:No 2265:No 2262:Yes 2242:No 2176:Yes 2156:No 2088:Yes 2068:No 2045:No 2042:Yes 2022:No 1999:No 1996:Yes 1976:No 1951:No 1948:Yes 1928:No 1903:No 1900:Yes 1891:6.0 1880:No 1877:Yes 1857:No 1832:No 1818:6.1 1807:No 1741:Yes 1721:No 1653:Yes 1633:No 1610:No 1607:Yes 1587:No 1564:No 1561:Yes 1541:No 1516:No 1513:Yes 1493:No 1490:Yes 1470:No 1467:Yes 1447:No 1424:No 1401:No 1376:No 1373:Yes 1310:Yes 1290:No 1287:Yes 1267:No 1252:0.1 1244:No 1232:5.2 1221:No 1198:No 1195:Yes 1175:No 1172:Yes 1163:6.8 1152:No 1149:Yes 1129:No 1106:No 1081:No 1058:No 1055:Yes 1035:No 969:Yes 949:No 926:No 923:Yes 903:No 880:No 877:Yes 857:No 791:Yes 771:No 746:No 743:Yes 723:No 700:No 697:Yes 688:2.1 677:No 408:or 103:). 4235:: 4106:. 4102:. 4080:. 4033:. 4006:. 3981:. 3946:^ 3899:^ 3889:. 3857:31 3855:. 3849:. 3773:^ 3672:. 3658:^ 3641:. 3627:^ 3598:. 3594:. 3556:. 3546:61 3544:. 3496:95 3494:. 3482:^ 3446:. 3417:^ 3400:. 3211:. 3196:. 2923:) 2908:). 2672:54 2658:21 2601:12 2587:22 2573:17 2559:15 2486:16 2472:16 2444:10 2331:No 2285:No 2239:No 2065:No 2019:No 1804:No 1630:No 1584:No 1444:No 1421:No 1264:No 1241:No 1218:No 1126:No 1078:No 1032:No 946:No 900:No 854:No 720:No 510:. 71:A 59:, 55:, 53:Io 4163:: 4065:. 4044:. 4018:. 3992:. 3966:. 3940:. 3893:. 3874:. 3863:: 3810:( 3748:. 3745:) 3742:J 3738:/ 3734:2 3728:S 3724:/ 3720:5 3717:( 3713:/ 3709:1 3699:S 3695:J 3683:. 3652:. 3621:. 3606:. 3602:: 3564:. 3552:: 3506:. 3450:. 3411:. 3362:. 3136:( 3086:0 3072:8 3058:6 2957:. 2714:) 2710:( 2629:3 2615:1 2545:1 2531:4 2500:0 2458:8 2430:5 2416:7 2402:8 2388:5 2351:2 2328:1 2305:6 2282:5 2259:4 2236:3 2216:2 2196:2 2173:2 2148:1 2128:6 2108:6 2085:6 2062:5 2039:4 2016:3 1993:2 1968:1 1945:6 1920:5 1897:4 1874:3 1849:2 1824:1 1801:6 1781:5 1761:5 1738:5 1713:4 1693:3 1673:3 1650:3 1627:2 1604:1 1581:6 1558:5 1533:4 1510:3 1487:2 1464:1 1441:6 1418:5 1393:4 1370:3 1350:2 1330:2 1307:2 1284:1 1261:6 1238:5 1215:4 1192:3 1169:2 1146:1 1123:6 1098:5 1075:4 1052:3 1029:2 1009:1 989:1 966:1 943:6 920:5 897:4 874:3 851:2 831:1 811:1 788:1 763:6 740:5 717:4 694:3 669:2 600:2 597:/ 320:S 316:J 298:, 293:s 290:y 287:a 284:d 270:) 264:S 261:1 251:J 248:1 242:( 238:1 20:)

Index

Great Conjunction

Stacked
Jupiter
arcminutes
Saturn
Io
Ganymede
Europa
Titan
conjunction
Jupiter
Saturn
orbit
naked-eye planets
Uranus
Neptune
degrees
arcminutes
full moon
inner planet
Astrological aspect § Great conjunctions
Middle Ages
Renaissance
Tycho Brahe
Johannes Kepler
Roger Bacon
Pierre d'Ailly
Dante
Lope de Vega

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