155P/Shoemaker
 Comet Shoemaker 3 photographed from the Zwicky Transient Facility on 25 November 2019 | |
| Discovery[1] | |
|---|---|
| Discovered by | Carolyn S. Shoemaker Eugene M. Shoemaker |
| Discovery site | Palomar Observatory |
| Discovery date | 10 January 1986 |
| Designations | |
| P/1986 A1, P/2002 R2 | |
| |
| Orbital characteristics[3][4] | |
| Epoch | 21 November 2025 (JD 2461000.5) |
| Observation arc | 34.36 years[a] |
| Number of observations | 2,027 |
| Aphelion | 11.355 AU |
| Perihelion | 1.789 AU |
| Semi-major axis | 6.572 AU |
| Eccentricity | 0.72774 |
| Orbital period | 16.849 years |
| Inclination | 6.411° |
| 97.157° | |
| Argument of periapsis | 14.541° |
| Mean anomaly | 128.40° |
| Last perihelion | 15 November 2019 |
| Next perihelion | 22 September 2036[5] |
| TJupiter | 2.328 |
| Earth MOID | 0.825 AU |
| Jupiter MOID | 0.302 AU |
| Physical characteristics | |
| Comet total magnitude (M1) | 10.0 |
| 14.89 (2019 apparition) | |
Comet Shoemaker 3, also known as 155P/Shoemaker, is a Jupiter-family comet with a 17-year-long orbit around the Sun. It is one of 32 comets discovered by American astronomers, Carolyn and Eugene Shoemaker.
Observational history
[edit]The comet was discovered from the Palomar Observatory on the night of 10 January 1986.[6] The Shoemakers' discovery was confirmed by Brian A. Skiff from the Lowell Observatory two days later.[1] Further observations and astrometric measurements by Brian G. Marsden revealed that the new comet is also periodic.[7][8][9]
It was next recovered by Shuichi Nakano on 9 September 2002.[10] A series of possible outbursts occurred from the comet in October 2019, which has raised its maximum brightness to 14.89 during its most recent perihelion.[11]
Notes
[edit]- ↑ Observation arc from the Minor Planet Center database covering dates from 10 January 1986 until 22 May 2020.
References
[edit]- 1 2 C. S. Shoemaker; E. M. Shoemaker; B. A. Skiff; et al. (17 January 1986). B. G. Marsden (ed.). "Comet Shoemaker (1986a)". IAU Circular. 4165 (1). Bibcode:1986IAUC.4165....1S.
- ↑ "Comet Names and Designations". International Comet Quarterly. Retrieved 18 January 2025.
- ↑ "155P/Shoemaker – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 21 November 2023.
- ↑ "155P/Shoemaker Orbit". Minor Planet Center. Retrieved 27 September 2026.
- ↑ "Horizons Batch for 155P/Shoemaker 3 (90001031) on 2036-Sep-22" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 16 April 2026. (JPL#53 Soln.date: 2022-Dec-31)
- ↑ G. W. Kronk. "155P/Shoemaker". Cometography.com. Retrieved 18 January 2025.
- ↑ E. M. Shoemaker; C. Y. Shao; B. A. Skiff; et al. (21 January 1986). B. G. Marsden (ed.). "Periodic Comet Shoemaker 3 (1986a)". IAU Circular. 4166 (1). Bibcode:1986IAUC.4166....1S.
- ↑ J. Gibson; L. Louys; R. M. West; et al. (31 January 1986). B. G. Marsden (ed.). "Periodic Comet Shoemaker 3 (1986a)". IAU Circular. 4171 (1). Bibcode:1986IAUC.4171....1G.
- ↑ S. Nakano (20 February 1986). B. G. Marsden (ed.). "Periodic Comet Shoemaker 3 (1986a)". IAU Circular. 4180 (3). Bibcode:1986IAUC.4180....3N.
- ↑ S. Nakano; T. Oribe; A. Nakamura (13 September 2002). D. W. Green (ed.). "Comet P/2002 R2 (Shoemaker)". IAU Circular. 7969 (2). Bibcode:2002IAUC.7969....2N.
- ↑ D. Bodewits; M. S. P. Kelley; B. Bolin, Bryce; et al. (17 October 2019). "Outburst of 155P/Shoemaker 3". The Astronomer's Telegram. 13199. Bibcode:2019ATel13199....1B.
External links
[edit]- 155P/Shoemaker at the JPL Small-Body Database
- 155P/Shoemaker at the Minor Planet Center database
- 155P/Shoemaker at Seiichi Yoshida's website
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