| Revision as of 02:43, 28 December 2024 editKyloRen2017 (talk | contribs)Extended confirmed users4,992 edits Alternate designation (PK20S060)Tags: Mobile edit Mobile web edit← Previous edit | Revision as of 03:05, 28 December 2024 edit undoKyloRen2017 (talk | contribs)Extended confirmed users4,992 edits →Discovery and observationsNext edit → | ||
| Line 33: | Line 33: | ||
| == Discovery and observations == | == Discovery and observations == | ||
| On 29 September 2020, ] discovered a new comet about 21.5 in apparent magnitude from images taken from the {{cvt|1.5|m|in}} telescope of the ].{{r|MPEC_2020-U151}} Orbital calculations showed it had reached its most recent perihelion on 23 November 2020, and it has frequent close passes with ], where the comet had passed about {{convert|0.076|AU|e6km|abbr=unit}} from the giant planet in 1983.{{r|jpl}} | |||
| == References == | == References == | ||
Revision as of 03:05, 28 December 2024
Periodic comet| Discovery | |
|---|---|
| Discovered by | Gregory J. Leonard |
| Discovery site | Mount Lemmon Obs |
| Discovery date | 29 September 2020 |
| Designations | |
| MPC designation | X/1987 A2 P/2013 Y3 P/2020 S6 |
| Alternative designations | PK20S060 |
| Orbital characteristics | |
| Epoch | 20 October 2020 (JD 2459142.5) |
| Observation arc | 12,458 days (34.11 years) |
| Earliest precovery date | 5 January 1987 |
| Number of observations | 294 |
| Aphelion | 5.322 AU |
| Perihelion | 1.875 AU |
| Semi-major axis | 3.598 AU |
| Eccentricity | 0.47899 |
| Orbital period | 6.82 years |
| Inclination | 15.459° |
| Longitude of ascending node | 242.571° |
| Argument of periapsis | 176.652° |
| Last perihelion | 23 November 2020 |
| TJupiter | 2.853 |
| Earth MOID | 0.8872 AU |
| Jupiter MOID | 0.0613 AU |
| Comet total magnitude (M1) | 8.6 |
| Comet nuclear magnitude (M2) | 17.7 |
449P/Leonard is a periodic comet that orbits the Sun once every 6.83 years.
Discovery and observations
On 29 September 2020, Gregory J. Leonard discovered a new comet about 21.5 in apparent magnitude from images taken from the 1.5 m (59 in) telescope of the Mount Lemmon Observatory. Orbital calculations showed it had reached its most recent perihelion on 23 November 2020, and it has frequent close passes with Jupiter, where the comet had passed about 0.076 AU (11.4 million km) from the giant planet in 1983.
References
- ^ "MPEC 2020-U151: Comet P/2020 S6 (Leonard)". www.minorplanetcenter.net. Minor Planet Center. 21 October 2020. Retrieved 28 December 2024.
- ^ "440P/Leonard – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 28 December 2024.
- J. Shanklin. "BAA Comet Section: Periodic Comets 400–499". University of Cambridge. Archived from the original on 13 July 2024. Retrieved 28 December 2024.
External links
.png)
 | This comet-related article is a stub. You can help Misplaced Pages by expanding it. |