62P/Tsuchinshan 1
NEOWISE image 14 January 2018
Discovery
Discovered byPurple Mountain Observatory, Nanking
Discovery dateJanuary 1, 1965
Orbital characteristics
Epoch2024-01-11[1]
(JD 2460320.5)
Aphelion5.472 AU (Q)
Perihelion1.265 AU (q)
Semi-major axis3.369 AU (a)
Eccentricity0.6245
Orbital period6.18 yr
Inclination10.50°
Last perihelion2017-Nov-16[1]
2011-Jun-30[2][3]
(unobserved)
Next perihelion2023-Dec-25[1][4]
Perihelion distance
at different epochs
[5]
Epoch Perihelion
(AU)
1800 2.45
1859 2.11
1882 2.04
1905 1.96
1965 1.49
2011 1.38
2023 1.26
2094 1.21
2106 1.15

62P/Tsuchinshan, also known as Tsuchinshan 1, is a periodic comet discovered on 1965 January 1 at Purple Mountain Observatory, Nanking.[6] It will next come to perihelion on 25 December 2023 at around apparent magnitude 8,[2] and will be 0.53 AU (79 million km) from Earth and 110 degrees from the Sun.[4]

During the 2004 perihelion passage the comet brightened to about apparent magnitude 11.[7] The comet was not observed during the 2011 unfavorable apparition since the perihelion passage occurred when the comet was on the far side of the Sun. During the 2023 apparition it brightened to 8th magnitude.[8]

On 2049 April 1 the comet will pass about 0.016 AU (2,400,000 km; 1,500,000 mi) from Mars.[6]

62P/Tsuchinshan closest Mars approach on 2049-Apr-01[6]
Date & time of
closest approach
Mars distance
(AU)
Sun distance
(AU)
Velocity
wrt Mars
(km/s)
Velocity
wrt Sun
(km/s)
Uncertainty
region
(3-sigma)
Reference
2049-Apr-01 16:38 ± 14 minutes 0.0157 AU (2.35 million km; 1.46 million mi; 6.1 LD) 1.53 AU (229 million km; 142 million mi) 12.0 30.0 ± 11 thousand km Horizons

See also

References

  1. ^ a b c "62P/Tsuchinshan Orbit". Minor Planet Center. Retrieved 2014-06-16.
  2. ^ a b Seiichi Yoshida (2010-11-28). "62P/Tsuchinshan 1". Seiichi Yoshida's Comet Catalog. Retrieved 2012-03-02.
  3. ^ Syuichi Nakano (2008-05-04). "62P/Tsuchinshan 1 (NK 1604)". OAA Computing and Minor Planet Sections. Retrieved 2012-03-02.
  4. ^ a b "Horizons Batch for 62P/Tsuchinshan 1 (90000670) on 2023-Dec-25" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Archived from the original on 2022-06-27. Retrieved 2023-07-06. (JPL#K174/12 Soln.date: 2023-May-04)
  5. ^ Kinoshita, Kazuo (2017-10-09). "62P/Tsuchinshan past, present and future orbital elements". Comet Orbit. Archived from the original on 2012-03-07. Retrieved 2023-08-16.
  6. ^ a b c "JPL Small-Body Database Browser: 62P/Tsuchinshan 1" (last observation: 2005-06-07; arc: 20.75 years). Jet Propulsion Laboratory. Archived from the original on 2012-12-13. Retrieved 2012-03-02.
  7. ^ Seiichi Yoshida (2005-06-10). "62P/Tsuchinshan 1 (2004)". Seiichi Yoshida's Comet Catalog. Retrieved 2012-03-02.
  8. ^ Ling, Alister; Ratcliffe, Martin (1 December 2023). "Sky This Month: December 2023". Astronomy Magazine. Retrieved 31 December 2023.


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