102P/Shoemaker Explained

102P/Shoemaker
Discoverer:	Carolyn S. Shoemaker Eugene Merle Shoemaker
Discovery Date:	September 27, 1984
Designations:	1984 XVI; 1991 XXIII
Epoch:	March 6, 2006
Semimajor:	3.739 AU
Perihelion:	1.974 AU
Aphelion:	5.505 AU
Eccentricity:	0.4722
Period:	7.231 a
Inclination:	26.2538°
Last P:	January 22, 2021^[1] September 1, 2013^[2] June 6, 2006
Next P:	2028-Jul-10^[3]

102P/Shoemaker, also known as Shoemaker 1, is a periodic comet in the Solar System. It was first seen in 1984 and then again in 1991. Images taken of it in 1999 were not recognized until 2006 when it was once again observed. It was unexpectedly dim in each of these returns.

External links

• Orbital simulation from JPL (Java) / Horizons Ephemeris
• 102P/Shoemaker 1 – Seiichi Yoshida @ aerith.net
• 102P at Kronk's Cometography
• IAU Minor Planet Center, Minor Planet Electronic Circular No. 2006-O54 giving questionable observations from 1999/2000 and new observations from 2006.
• IAU Central Bureau for Astronomical Telegrams Circular No. 5361 giving visual magnitude estimates for 1991 observations.
• IAU Central Bureau for Astronomical Telegrams Circular No. 5336 giving calculated orbit based on 1991 observations.
• IAU Central Bureau for Astronomical Telegrams Circular No. 5286 Describing recovery of 102P/Shoemaker in 1991
• IAU Central Bureau for Astronomical Telegrams Circular No. 4017. Describing more visual magnitude estimates and orbital parameters from 1984.
• IAU Central Bureau for Astronomical Telegrams Circular No. 4002. Describing visual magnitude estimates of comet from 1984.
• IAU Central Bureau for Astronomical Telegrams Circular No. 4000. Describing positions of comet observed in 1984. Also mentions close pass of Jupiter calculated to have occurred in 1980.
• IAU Central Bureau for Astronomical Telegrams Circular No. 3998 Describing the initial calculation of the comet's orbit in 1984

Notes and References

1. Web site: 102P/Shoemaker Orbit . . 2014-06-17.
2. Web site: 2010-04-28 . 102P/Shoemaker 1 (NK 1924) . OAA Computing and Minor Planet Sections . Syuichi Nakano . Syuichi Nakano . 2012-02-20.
3. Web site: Horizons Batch for 102P/Shoemaker 1 (90000944) on 2028-Jul-10 . . Perihelion occurs when rdot flips from negative to positive . 2021-09-13. (JPL K213/2 Soln.date: 2022-Feb-06)