102P/Shoemaker
| Discovery[1] | |
|---|---|
| Discovered by | Carolyn S. Shoemaker Eugene Merle Shoemaker |
| Discovery site | Palomar Observatory |
| Discovery date | 27 September 1984 |
| Designations | |
| P/1984 S2 P/1991 L2 | |
| |
| Orbital characteristics[2][3] | |
| Epoch | 21 November 2025 (JD 2461000.5) |
| Observation arc | 37.35 years |
| Earliest precovery date | 1 September 1984 |
| Number of observations | 529 |
| Aphelion | 5.562 AU |
| Perihelion | 2.079 AU |
| Semi-major axis | 3.821 AU |
| Eccentricity | 0.45582 |
| Orbital period | 7.468 years |
| Inclination | 25.846° |
| 339.35° | |
| Argument of periapsis | 20.708° |
| Mean anomaly | 232.94° |
| Last perihelion | 22 January 2021 |
| Next perihelion | 10 July 2028[4] |
| TJupiter | 2.732 |
| Earth MOID | 0.976 AU |
| Jupiter MOID | 0.191 AU |
| Physical characteristics[2] | |
Mean radius | 0.208 km (0.129 mi)[5] |
| Comet total magnitude (M1) | 16.2 |
102P/Shoemaker, also known as Shoemaker 1, is a Jupiter-family comet with a 7.47-year orbit around the Sun. It was first seen in 1984,[1] and then again in 1991.[6] Images taken of it in 1999 were not recognized until 2006 when it was once again observed.[7] It was unexpectedly dim in each of these returns.
References
[edit]- 1 2 C. S. Shoemaker; E. M. Shoemaker (4 October 1984). D. W. Green (ed.). "Comet Shoemaker (1984q)". IAU Circular. 3997 (1). Bibcode:1984IAUC.3997....1S.
- 1 2 "102P/Shoemaker 1 – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 14 January 2026.
- ↑ "102P/Shoemaker Orbit". Minor Planet Center. Retrieved 17 June 2014.
- ↑ "Horizons Batch for 102P/Shoemaker 1 (90000944) on 2028-Jul-10" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 13 September 2021. (JPL K213/2 Soln.date: 2022-Feb-06)
- ↑ M. L. Paradowski (2022). "A New Indirect Method of Determining Density of Cometary Nuclei" (PDF). Acta Astronomica. 72 (2): 141–159. Bibcode:2022AcA....72..141P. doi:10.32023/0001-5237/72.2.4. ISSN 0001-5237.
- ↑ P. M. Kilmartin; A. C. Gilmore (11 June 1991). "Periodic Comet Shoemaker 1 (1991p)". IAU Circular. 5286 (1). Bibcode:1991IAUC.5286....1K.
- ↑ K. Sarneczky; L. Kiss; P. Birtwhistle; B. G. Marsden (July 2006). "Comet 102P/Shoemaker". Minor Planet Electronic Circulars. 2006-O54. Bibcode:2006MPEC....O...54S.
External links
[edit]- 102P/Shoemaker at the JPL Small-Body Database
- 102P/Shoemaker 1 – Seiichi Yoshida @ aerith.net
- 102P at Kronk's Cometography Archived 2016-03-03 at the Wayback Machine
- 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. 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
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