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 | |
| 1986a; 1985 XVIII[2] Shoemaker 3 | |
| Orbital characteristics[3][4] | |
| Epoch | 21 May 2011 (JD 2455702.5) |
| Observation arc | 12,550 days (34.36 years) |
| Number of observations | 1,966 |
| Aphelion | 11.38 AU |
| Perihelion | 1.806 AU |
| Semi-major axis | 6.594 AU |
| Eccentricity | 0.72611 |
| Orbital period | 16.93 years |
| Inclination | 6.398° |
| 97.276° | |
| Argument of periapsis | 14.602° |
| 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 periodic 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]
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.[7]
References
[edit]- 1 2 B. G. Marsden (17 January 1986). "Comet Shoemaker (1986a)". International Astronomical Union Circular. 4165.
- ↑ "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.
- ↑ S. Yoshida. "155P/Shoemaker". www.aerith.net. Retrieved 18 January 2025.
- ↑ "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.
- ↑ 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
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