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201 Penelope
Main-belt asteroid
Main-belt asteroid
| Field | Value |
|---|---|
| minorplanet | yes |
| background | #D6D6D6 |
| name | 201 Penelope |
| image | 201 Penelope.png |
| caption | A three-dimensional model of 201 Penelope based on its light curve. |
| discoverer | Johann Palisa |
| discovered | 7 August 1879 |
| mpc_name | (201) Penelope |
| pronounced | |
| adjective | Penelopean |
| alt_names | A879 PA; 1869 GA |
| named_after | Penelópē |
| mp_category | Main belt |
| epoch | 21 January 2022 (JD 2457600.5) |
| semimajor | 2.67958 AU |
| perihelion | 2.19929 AU |
| aphelion | 3.15987 AU |
| eccentricity | 0.17924 |
| period | 1602.14 days |
| inclination | 5.75625° |
| asc_node | 156.91554° |
| arg_peri | 180.90559° |
| mean_anomaly | 169.01173° |
| avg_speed | 18.19 km/s |
| dimensions | |
| rotation | 3.7474 h |
| * Tholen {{ | }} M |
| * SMASS {{ | }} X |
| * B–V {{ | }} 0.720 |
| * U–B {{ | }} 0.233 |
| * 8.38<ref name | "JPL2022"/ |
| * 8.43<ref name | "SBDB"/ |
| * 8.5<ref name | "MPC2022"/ |
| * 8.54<ref name | "Pravec2012"/ |
| albedo | |
| mean_motion | / day |
| orbit_ref | |
| observation_arc | 52077 days |
| uncertainty | 0 |
| jupiter_moid | 2.23013 AU |
| tisserand | 3.347 |
- Tholen M
- SMASS X
- B–V 0.720
- U–B 0.233
- 8.38
- 8.43
- 8.5
- 8.54
201 Penelope is a large main belt asteroid that was discovered by Austrian astronomer Johann Palisa on August 7, 1879, in Pola. The asteroid is named after Penelope, the wife of Odysseus in Homer's The Odyssey. It is orbiting the Sun at a distance of with an eccentricity (ovalness) of 0.18 and a period of 1600.2 days. The orbital plane is tilted at an angle of 5.8° to the plane of the ecliptic.
Based upon the spectra of this object, it is classified as a M-type asteroid, indicating it may be metallic in composition. It may be the remnant of the core of a larger, differentiated asteroid. Near infrared absorption features indicate the presence of variable amounts of low-iron, low-calcium orthopyroxenes on the surface. Trace amounts of water is detected with a mass fraction of about 0.13–0.15 wt%. It has an estimated size of around 88 km. With a rotation period of 3.74 hours, it is the fastest rotating asteroid larger than 50 km in diameter.
References
References
- {{OED. Penelope
- "Small-Body Database Lookup".
- "IAU Minor Planet Center".
This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.
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