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| 2029 April 13
| 2029 April 13
| Near-Earth asteroid [[99942 Apophis|(99942) Apophis]] will pass Earth at a relatively small distance of 31,200 [[Kilometre|kilometres]] (19,400 [[Mile|mi]]) above Earth's surface, closer than some [[Geosynchronous satellite|geosynchronous satellites]].<ref>{{Cite web|title=NASA Rules Out Earth Impact in 2036 for Asteroid Apophis|url=http://www.jpl.nasa.gov/news/news.php?feature=3652|website=NASA/JPL|access-date=2020-05-11}}</ref>
| Near-Earth asteroid [[99942 Apophis|(99942) Apophis]] will pass Earth at a relatively small distance of 31,200 [[Kilometre|kilometres]] (19,400 [[Mile|mi]]) above Earth's surface, closer than some [[Geosynchronous satellite|geosynchronous satellites]].<ref>{{Cite web|title=NASA Rules Out Earth Impact in 2036 for Asteroid Apophis|url=http://www.jpl.nasa.gov/news/news.php?feature=3652|website=NASA/JPL|access-date=2020-05-11}}</ref>
|-
| 2032 [[November 13]]
| [[Transit of Mercury]].<ref>{{cite web|title=1999 Transit of Mercury|url=https://eclipse.gsfc.nasa.gov/OH/transit99.html|website=eclipse.gsfc.nasa.gov|accessdate=May 7, 2018}}</ref>
|-
| 2032
| Projected return to [[Earth]] [[orbit]] of object [[J002E3]], the discarded [[S-IVB]] third stage of the [[Apollo 12]] [[Saturn V]].<ref>{{cite book|last1=Chen|first1=James L.|title=How to Find the Apollo Landing Sites|date=2014|publisher=Springer|isbn=9783319064567|page=70|url=https://books.google.com/books?id=gZPIAwAAQBAJ&pg=PA70|language=en}}</ref>
|-
|-
| 2034 [[March 20]]
| 2034 [[March 20]]

Revision as of 17:37, 8 October 2020

A list of future observable astronomy events. These are by no means all events, but only the notable or rare ones. In particular, it does not include solar eclipses or lunar eclipses unless otherwise notable, as they are far too numerous to list (see below for articles with lists of all these). Nor does it list astronomical events that have yet to be discovered. And some points of the list miss the last date of the events.

21st century

Date Event
2029 April 13 Near-Earth asteroid (99942) Apophis will pass Earth at a relatively small distance of 31,200 kilometres (19,400 mi) above Earth's surface, closer than some geosynchronous satellites.[1]
2032 November 13 Transit of Mercury.[2]
2032 Projected return to Earth orbit of object J002E3, the discarded S-IVB third stage of the Apollo 12 Saturn V.[3]
2034 March 20 Total solar eclipse.[4][5]
2034 April 3 Penumbral lunar eclipse.[6][7]
2034 September 12 Annular solar eclipse.[5]
2034 September 28 Partial lunar eclipse.[7]
2034 November 25 Supermoon.[8][9]
2040 September 8 Planetary alignment of Mercury, Venus, Mars, Jupiter, Saturn and the crescent Moon.[10]
2040 The Great Red Spot on Jupiter's atmosphere will become circular according to calculations based on its reduction rate at present. [11]
2044 May A METI message Cosmic Call 2 sent from the 70-metre Evpatoria Planetary Radar arrives at its destination, 55 Cancri star.
2044 September Another METI message Cosmic Call 2 sent from the 70-metre Evpatoria Planetary Radar arrives at its destination, HD 10307 star.
2044 October 1 Occultation of Regulus by Venus. The last was on July 7, 1959 and the next will occur on October 21, 3187, although some sources claim it will occur on October 6, 2271.
2047 July A METI message called Teen Age Message sent from the 70-meter Eupatoria Planetary Radar will arrive at its destination, 47 UMa star.
2048 February 29 There will be a rare full moon on a leap day; this event happens roughly once every century.[12] The next full moon on a leap day will not occur until February 29, 2124.[13]
2060 Between October 26–28, periodic comet 15P/Finlay will pass about 6 million km from Earth.
2061 July 28 Halley's Comet reaches its perihelion, the closest point to the Sun—the last return reached its perihelion on February 9, 1986.[14]
2062 May 10 Transit of Mercury.[15]
2063 Triple conjunction Mars-Uranus.[citation needed]
2065 November 11 Transit of Mercury
2065 November 22 12:45 UTC Venus will occult Jupiter. It will be very difficult to observe from Earth, because the elongation of Venus and Jupiter from the Sun at this time will be only 7 degrees. This event will be the first occultation of a planet by another since January 3, 1818; however the next will occur less than two years later, on July 15, 2067.[16]
2066 Triple conjunction Jupiter-Uranus.[citation needed]
2067 July 15 11:56 UTC Mercury will occult Neptune. This rare event will be very difficult to observe from Earth's surface, because of the constant low elongation of Mercury from the Sun, and the magnitude of Neptune always under the limit of visibility with the naked eye.[citation needed]
2067 October A METI message Cosmic Call 1 sent from the 70-meter Eupatoria Planetary Radar arrives at its destination, star HD 178428.
2069 A METI message, Cosmic Call 1, sent from the 70-meter Eupatoria Planetary Radar in 1999, arrives at its destination, 16 Cyg A star.[17]
2070 February The Teen Age Message, an Active SETI message sent in 2001 from the 70-meter Eupatoria Planetary Radar, arrives at its destination, the star HD 197076.[18]
2076 The planetoid 90377 Sedna is expected to reach its perihelion (closest point to the Sun in its orbit). This date is subject to adjustment as Sedna's highly elliptical orbit is still being refined.[19]
2079 August 11 Mercury occults Mars, the first since at least 1708.[20]
2083 A star system known as "V Sagittae" is expected to go supernova this year (+/- 11 years)
2084 November 10, 2084 Transit of Earth as seen from Mars, the first and the only one in this century.
2085 November 7 Transit of Mercury.
2088 October 27 Mercury occults Jupiter for the first time since 1708, but very close to the Sun and impossible to view with the naked eye.[21]
2090 September 23 Total solar eclipse in the UK. The next total eclipse visible in the UK follows a track similar to that of August 11, 1999, but shifted slightly further north and occurring very near sunset. Maximum duration in Cornwall will be 2 minutes and 10 seconds. Same day and month as the eclipse of September 23, 1699.
2094 April 7 Mercury occults Jupiter; it will be very close to the Sun and impossible to view with the naked eye.[citation needed]
2100 March 24 Polaris appears furthest North. Polaris's maximum apparent declination (taking account of nutation and aberration) will be 0.4526° from the celestial north pole.[22]

Long solar eclipses:

22nd to 30th century

Date Event
2113 August The first time Pluto reaches aphelion since its discovery.
2114 Sedna overtakes Eris as the farthest known planet-like object orbiting the Sun.
2123 June 9 Long-duration lunar eclipse of approximately 106.1 minutes.[23]
2123 September 14 At 15:28 UTC, Venus eclipses Jupiter.
2134 Halley's Comet returns to the inner Solar System
2150 June 25 Long duration (7 min 14 s) total solar eclipse, Solar Saros 139.[24]
The first "long" (> 7 min.) total solar eclipse since June 30, 1973.[25]
2168 July 5 The largest total solar eclipse of the 3rd millennium, with an eclipse magnitude of 1.08074, lasting 7 minutes and 26 seconds exactly, saros 139.[26]
2174 The second full orbit of Neptune around the sun since its discovery in 1846.
2177 "First Plutonian anniversary" of the dwarf planet's discovery, given that Pluto's orbit is just under 248 Earth years.
2186 July 16 The longest total solar eclipse of the century.[27] Lasting 7 min 29 s, it is very close to the theoretical maximum,[28] and is predicted to be the longest eclipse during the current 10,000 year period, from 4000 BC to AD 6000 (eclipse predictions by Fred Espenak, NASA/GSFC.DEPP).[29]
2197 September 2 Venus occults Spica (the first time since November 10, 1783).
2197 December 24 The Moon occults Neptune.
2209 Return of Halley's Comet.
2253 August 1 Mercury occults Regulus (for the first time since August 13, 364 BC).
2265 Return to perihelion by the Great Comet of 1861.
2281-82 Grand Trine of Uranus, Neptune, and Pluto. This last occurred in 1769 and 1770.
2309 June 9 The longest total solar eclipse of the century, at 6 min. 30 s.[30]
2365 Perihelion of Comet Halley.
2391 May 11 Partial transit of Mercury.
2400 November 17 Venus occults Antares (for the first time since September 17, 525 BC).
2426 Pluto's second orbit, since its discovery.
2492 May 6 Belgian astronomer Jean Meeus asserts that the orbits of all eight planets and Pluto will be within the same 90° arc of the Solar System. The last time this is believed to have occurred was on February 1, 949.[31]
2504 June 14 Long (7 min. 10 s.) total solar eclipse, of saros 145.[32]
2540 July 5 Long (7 min. 4 s.) total Solar eclipse.[33]
2562 The dwarf planet Eris completes one orbit of the Sun, since its discovery in 2005.
2600 May 5 First total solar eclipse[34] visible from London since 2151.[35]
The width of its path is predicted to be exceptionally wide at its maximum point.
2608 May 13 Grazing transit of Mercury.
2650 September 3 The distance between Mars and the Earth will arrive at a new remarkable minimum, at 55,651,582.118 km.
It will be the closer encounter of perihelitic opposition slightly shorter (of next 37,000 km) than the previous one of the August 28, 2287.[36]
2699-2700 3 triple conjunctions occur within a 2-year time, between Mars-Jupiter, Mars-Neptune and Jupiter-Neptune.
2729 September 8 The distance between Mars and the Earth will arrive at a new remarkable minimum, at 55,651,033.122 km.
It will be the closer encounter of perihelitic opposition slightly shorter (of 549 km) than the previous one of the September 3, 2650.[37]
2800-99 The remnants of Comet Ikeya-Seki are expected to return to the inner solar system. It was last seen from Earth in 1965-1966, and broke into three pieces as it approached the Sun.[citation needed]
2816 March 25 At 15:47 UTC, Mercury will occult Jupiter.[citation needed]
2817 March 6, At 09:36 UTC, Venus will occult Saturn.[citation needed]
2818 April 11 At 20:41 UTC, Mercury will occult Mars.[citation needed]
2825 February 6 At 10:50 UTC, Mars will occult Uranus.[citation needed]
2829/2830 Triple conjunction Mars-Saturn.[citation needed]
2830 December 15 At 09:40 UTC, Venus will occult Mars.[citation needed]
2842/2843 Triple conjunction Mars-Jupiter.[citation needed]
2846 December 16 Transit of Venus.[citation needed]
2854 December 14 Partial transit of Venus.[citation needed]
2855 July 20 At 05:15 UTC, Mercury will occult Jupiter.[citation needed]
2866 Triple conjunction Mars-Saturn.[citation needed]
2880 March 16 Predicted possible impact date for asteroid (29075) 1950 DA, the near-Earth object with the highest known probability of crashing into Earth, although the probability of an impact is only 1 in 8,300 (0.012%).[38][39]
3000 Due to the precession of the equinoxes, Gamma Cephei becomes the North star.

Long solar eclipses:

  • May 21, 2813 : Solar eclipse,[40] (6 min 11 s), of saros 170.
  • June 1, 2831 : Solar eclipse,[41] (6 min 39 s), of saros 170.
  • June 12, 2849 : Solar eclipse,[42] (7 min 00 s), of saros 170.
  • June 23, 2867 : Solar eclipse,[43] (7 min 10 s), of saros 170.
  • July 3, 2885 : Solar eclipse,[44] (7 min 11 s), of saros 170
  • July 16, 2903: Solar eclipse[45] (7 min 04 s), of saros 170.
  • July 26, 2921: Solar eclipse[46] (6 min 50 s), of saros 170.
  • August 6, 2939: Solar eclipse[47] (6 min 33 s), of saros 170.
  • August 16, 2957: Solar eclipse[48] (6 min 13 s), of saros 170.
  • August 28, 2975: Solar eclipse[49] (5 min 53 s), of saros 170.
  • September 7, 2993: Solar eclipse[50] (5 min 33 s), of saros 170.

4th to 10th millennium

Date Event
3089 December 18 First transit of Venus which is not part of a pair since November 23, 1396.
3412 Expected return of Comet McNaught-Russell.
3711-12 Multi-triple conjunction between Jupiter, Saturn, Uranus and Neptune.
3973 July 13 At 18:54:49 UTC a long (7 min 12s) total solar eclipse.
3991 July 25 At 02:29:22 UTC a long (7 min 18s) total solar eclipse.
4000-4999 The expected return of Comet Donati.
4009 August 4 At 10:00:56 UTC a long (7 min 12s) total solar eclipse.
4385 Comet Hale–Bopp is expected to return to the inner solar system. It last dominated the skies of Earth in 1996-97.
4520 Hale-bopp reaches its closest to the sun since 1997
c. 4876 The Great Comet of 1811 is expected to return to the inner solar system. According to calculations made at the time, the comet should return around the year 4876.
4903 June 29 At 8:55:01 UTC a long (7 min 0s) total solar eclipse.
4921 August 8 At 16:28:39 UTC a long (7 min 3s) total solar eclipse.
c. 5200 Iota Cephei becomes the North star.
5366 August 27 Venus occults Aldebaran (the first occultation of Aldebaran by a planet since July 15, 18,980 BC).
6727 August 25 Mars occults Regulus (for the first time since June 28, 17,619 BC).
6757 July 5 There is anticipated to be a simultaneous solar eclipse and transit of Mercury, the first such simultaneous eclipse and planetary transit in recorded history.[51]
7541 February 14 Jupiter occults Saturn (the first time since prehistoric times, and the first of a double row in a year, the only occurrence of this for perhaps at least a million years).[52]
c. 7800 plutoid 90377 Sedna passes its aphelion in the decades around the year 7800 AD.

All these dates are in a uniform time scale such as Terrestrial Time. When converted to our ordinary solar time or Universal Time, which is decidedly non-uniform, via ?T, the dates would be about one day earlier. Because of this difference, these dates have no anniversary relation to historical dates and should not be linked to them. Furthermore, they are only astronomical dates, so they are given in the astronomical format of Year Month Day, which allows them to be ordered.

Date Event
8059 July 20 Simultaneous annular solar eclipse and transit of Mercury.[53]
9361 August 4 Simultaneous annular solar eclipse and transit of Mercury.[54]
9622 February 4 Simultaneous annular solar eclipse and transit of Mercury.[54]
c. 9800 Earth's axial precession makes Deneb the North star.[55]
9966 August 11 Simultaneous total solar eclipse and transit of Mercury.[54]

Far future

Extremely rare astronomical events in the far future, here defined as the years after the beginning of the 11th millennium AD (Year 10,001).

Date / Years from now Event
20 August, 10,663 AD A simultaneous total solar eclipse and transit of Mercury.[56]
10,720 AD The planets Mercury and Venus will both cross the ecliptic at the same time.[56]
25 August, 11,268 AD A simultaneous total solar eclipse and transit of Mercury.[56]
28 February, 11,575 AD A simultaneous annular solar eclipse and transit of Mercury.[56]
17 September, 13,425 AD A near-simultaneous transit of Venus and Mercury.[56]
13,727 AD Vega becomes the North Star.[57][58][59][60]
5 April, 15,232 AD A simultaneous total solar eclipse and transit of Venus.[56]
20 April, 15,790 AD A simultaneous annular solar eclipse and transit of Mercury.[56]
14,000-17,000 years Canopus becomes the South Star, but it will only be within 10° of the south celestial pole.[61]
20,346 AD Thuban becomes the North Star.[62]
27,800 AD Polaris again is the North Star.[63]
27,000 years The eccentricity of Earth's orbit will reach a minimum, 0.00236 (it is now 0.01671).[64][65]
October, 38,172 AD A transit of Uranus from Neptune, the rarest of all planetary transits.[66]
67,173 AD The planets Mercury and Venus will both cross the ecliptic at the same time.[56]
26 July, 69,163 AD A simultaneous transit of Venus and Mercury.[56]
70,000 years Estimated time for Comet Hyakutake to return to the inner solar system, after having travelled in its orbit out to its aphelion 3410 A.U. from the Sun and back.[67]
27 and 28 March, 224,508 AD Respectively, Venus and then Mercury will transit the Sun.[56]
571,741 AD A simultaneous transit of Venus and the Earth as seen from Mars[56]
6 million years Estimated time for Comet C/1999 F1 (Catalina), one of the longest period comets known to return to the inner solar system, after having travelled in its orbit out to its aphelion 66,600 A.U. (1.05 light years) from the Sun and back.[68]
~600 million years Last total solar eclipse.

See also

References

  1. ^ "NASA Rules Out Earth Impact in 2036 for Asteroid Apophis". NASA/JPL. Retrieved 2020-05-11.
  2. ^ "1999 Transit of Mercury". eclipse.gsfc.nasa.gov. Retrieved May 7, 2018.
  3. ^ Chen, James L. (2014). How to Find the Apollo Landing Sites. Springer. p. 70. ISBN 9783319064567.
  4. ^ Espenak, Fred (September 26, 2009). "Statistics for Solar Eclipses of Saros 130". NASA Eclipse Web Site. NASA. Retrieved August 15, 2017.
  5. ^ a b Espenak, Fred (December 9, 2013). "Solar Eclipses: 2031 - 2040". NASA Eclipse Web Site. NASA. Retrieved August 15, 2017.
  6. ^ Espenak, Fred (June 21, 2015). "Lunar Eclipses in Saros Series 142". moonblink.info. Ian Cameron Smith. Retrieved August 15, 2017.
  7. ^ a b Espenak, Fred; Meeus, Jean (May 23, 2011). "Lunar Eclipses: 2001 to 2100". NASA Eclipse Web Site. NASA. Retrieved August 15, 2017.
  8. ^ Mathewson, Samantha (November 14, 2016). "'Supermoon' Science: NASA Explains the Closest Full Moon Until 2034". Space.com. Purch. Retrieved August 15, 2017.
  9. ^ Freeman, David (November 3, 2016). "A Supermoon Like This One Won't Come Again Until 2034". Huffington Post. Retrieved August 15, 2017.
  10. ^ "Planets for Dessert - NASA Science". Science.nasa.gov. Retrieved 2015-11-11.
  11. ^ Siegel, Ethan (July 10, 2017). "Jupiter's Great Red Spot Gets Its First-Ever Close Up Today". Forbes. Retrieved May 22, 2019.
  12. ^ Bart Broks. "Re: When is the next time in which a full moon falls on a leap day, Feb. 29". www.madsci.org. Retrieved March 4, 2020.
  13. ^ Plait, Phil (2014-06-13). "Wait. What About a Full Moon on Feb. 29?". Slate Magazine. Retrieved 2020-06-22.
  14. ^ "Moon mine 'could start in 50 years'". BBC News. January 2, 2012.
  15. ^ "NASA - 2006 Transit of Mercury". Eclipse.gsfc.nasa.gov. Retrieved 2014-08-21.
  16. ^ "See Venus and Jupiter get close at dawn on 13 November". Astronomy Now. 10 November 2017. Retrieved 19 January 2018.
  17. ^ "The 70-metre Eupatoria Planetary Radar sent a METI message (Cosmic Call 2) to 5 stars: Hip 4872, HD 245409, 55 Cancri (HD 75732), HD 10307 and 47 Ursae Majoris (HD 95128). The messages will arrive to these stars in 2036, 2040, 2044 and 2049 respectively | Arianica encyclopedia: Iran's history, art, and civilization heritages". Arianica.com. Retrieved 2015-10-15.
  18. ^ Zaitsev, A.L. (7 June 2004). "Transmission and retrieval intelligent signals in the universe". Report on the Russian astronomical conference VAK-2004 "Horizons of the Universe" (in Russian). Moscow: Institute of Radio Engineering and Electronics. Retrieved 31 August 2012.
  19. ^ JPL Horizons On-Line Ephemeris System (18 July 2010). "Horizons Output for Sedna 2076/2114". Archived from the original on 25 February 2012. Retrieved 18 July 2010. Horizons
  20. ^ Larry Bogan. "Mutual Planetary Occultations Past and Future". www.bogan.ca. Retrieved March 5, 2020.
  21. ^ Larry Bogan. "Mutual Planetary Occultations Past and Future". www.bogan.ca. Retrieved July 2, 2020.
  22. ^ Meeus, Jean (1997). Mathematical Astronomy Morsels Ch.50. Willmann-Bell.
  23. ^ "Catalog of Lunar Eclipses, 2101 to 2200". National Aeronautics and Space Administration. Retrieved 15 March 2014.
  24. ^ "Eclipse of June 25, 2150" (GIF). NASA Eclipse Web Site. Retrieved 15 March 2014.
  25. ^ "Solar eclipse of June 30, 1973" (GIF). NASA Eclipse Web Site.[permanent dead link]
  26. ^ "Eclipse of July 5, 2168" (GIF). NASA Eclipse Web Site.
  27. ^ "Eclipse of July 16, 2186". NASA Eclipse Web Site. Archived from the original (GIF) on March 7, 2008.
  28. ^ "Saros 139". NASA Eclipse Web Site.
  29. ^ "NASA Eclipse Web Site". NASA Eclipse Web Site. Archived from the original on 2008-02-19.
  30. ^ "Eclipse of June 9, 2309" (GIF). NASA Eclipse Web Site.[permanent dead link]
  31. ^ Griffith Observatory Archived 2005-01-30 at the Wayback Machine (non accessible)
  32. ^ Solar eclipse of June 14, 2504
  33. ^ Solar eclipse of July 5, 2540
  34. ^ Solar eclipse of May 5, 2600 Archived July 15, 2012, at archive.today
  35. ^ Solar eclipse of June 14, 2151 Archived July 16, 2012, at archive.today
  36. ^ [meteorite-list] Mars Makes Closest Approach In Nearly 60,000 Years, by Ron Baalke, on Friday August 22, 2003 at 09:04:54 -0700
  37. ^ [meteorite-list] Mars Makes Closest Approach In Nearly 60,000 Years, par Ron Baalke, on Friday August 22, 2003 at 09:04:54 -0700
  38. ^ "Asteroid 1950 DA". NASA Near earth object program. NASA. Archived from the original on July 21, 2011. Retrieved December 1, 2015.
  39. ^ Braun, David (April 4, 2002). "Is a Large Asteroid Headed for Impact With Earth in 2880?". National Geographic News.
  40. ^ "Solar eclipse of May 21, 2813". Archived from the original on February 2, 2012. Retrieved June 14, 2011.
  41. ^ "Solar eclipse of June 1, 2831". Archived from the original on February 2, 2012. Retrieved June 14, 2011.
  42. ^ "Solar eclipse of June 12, 2849". Archived from the original on August 25, 2011. Retrieved June 14, 2011.
  43. ^ "Solar eclipse of June 23, 2867". Archived from the original on August 22, 2011. Retrieved June 14, 2011.
  44. ^ "Solar eclipse of July 3, 2885". Archived from the original on February 2, 2012. Retrieved June 14, 2011.
  45. ^ Solar eclipse of July 16, 2903
  46. ^ Solar eclipse of July 26, 2921
  47. ^ Solar eclipse of August 6, 2939
  48. ^ Solar eclipse of August 16, 2957
  49. ^ Solar eclipse of August 28, 2975
  50. ^ Solar eclipse of September 7, 2993
  51. ^ Simultaneous occurrence of solar eclipse and transit of Mercury 6757 July 05
  52. ^ Solex - Dates of occultations of Saturn by Jupiter, from Earth Archived 2004-06-04 at the Wayback Machine
  53. ^ "Simultaneous occurrence of solar eclipse and transit of Mercury 8059 Jul 20". Archived from the original on 2014-09-12. Retrieved 2014-09-02.
  54. ^ a b c "Solar eclipses during transits; One hundred millennium catalog 50 000 BC - 50 000 AD". Archived from the original on 2014-09-24. Retrieved 2014-09-02.
  55. ^ "Deneb". University of Illinois. 2009. Retrieved 5 September 2011.
  56. ^ a b c d e f g h i j k Meeus, J. and Vitagliano, A. (2004). "Simultaneous Transits" (PDF). Journal of the British Astronomical Association. 114 (3). Archived from the original (PDF) on 2006-06-15. Retrieved 7 September 2011.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  57. ^ "Why is Polaris the North Star?". NASA. Retrieved 10 April 2011.
  58. ^ Plait, Phil (2002). Bad Astronomy: Misconceptions and Misuses Revealed, from Astrology to the Moon Landing "Hoax". John Wiley and Sons. pp. 55–56.
  59. ^ Falkner, David E. (2011). The Mythology of the Night Sky. Springer. p. 116.
  60. ^ Calculation by the Stellarium application version 0.10.2, retrieved 2009-07-28
  61. ^ Kieron Taylor (1 March 1994). "Precession". Sheffield Astronomical Society. Archived from the original on 23 July 2018. Retrieved 2013-08-06.
  62. ^ Falkner, David E. (2011). The Mythology of the Night Sky. Springer. p. 102.
  63. ^ Komzsik, Louis (2010). Wheels in the Sky: Keep on Turning. Trafford Publishing. p. 140.
  64. ^ Laskar, J.; et al. (1993). "Orbital, Precessional, and Insolation Quantities for the Earth From ?20 Myr to +10 Myr". Astronomy and Astrophysics. 270: 522–533. Bibcode:1993A&A...270..522L.
  65. ^ Laskar; et al. "Astronomical Solutions for Earth Paleoclimates". Institut de mécanique céleste et de calcul des éphémérides. Retrieved 20 July 2012.
  66. ^ Aldo Vitagliano (2011). "The Solex page". Università degli Studi di Napoli Federico II. Archived from the original on 29 April 2009. Retrieved 20 July 2012.
  67. ^ James, N.D. (1998). "Comet C/1996 B2 (Hyakutake): The Great Comet of 1996". Journal of the British Astronomical Association. 108: 157. Bibcode:1998JBAA..108..157J.
  68. ^ Horizons output. "Barycentric Osculating Orbital Elements for Comet C/1999 F1 (Catalina)". Retrieved 2011-03-07.
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