1131 Porzia
| Discovery [1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 10 September 1929 |
| Designations | |
| MPC designation | 1131 Porzia |
|
Named after
|
Porcia (in Shakespeare's play) Julius Caesar[2] |
| 1929 RO · 1939 TJ 1962 MB |
|
| Mars-crosser [1][3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.92 yr (31,384 days) |
| Aphelion | 2.8671 AU |
| Perihelion | 1.5888 AU |
| 2.2279 AU | |
| Eccentricity | 0.2868 |
| 3.33 yr (1,215 days) | |
| 288.07° | |
| Inclination | 3.2293° |
| 100.71° | |
| 248.04° | |
| Earth MOID | 0.5860 AU |
| Physical characteristics | |
| Dimensions | 7.13 km (calculated)[3] |
| 4.6584 h[4] 4.0±0.2 h[5] 4.6601±0.0006 h[6] |
|
| 0.20 (assumed)[3] | |
| SMASS = S S [3] |
|
| 12.9 | |
1131 Porzia, provisional designation 1929 RO, is an eccentric, stony asteroid and sizable Mars-crosser from the innermost regions of the asteroid belt, about 7 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg Observatory on 10 September 1929.[7]
The S-type asteroid orbits the Sun at a distance of 1.6–2.9 AU once every 3 years and 4 months (1,215 days). Its orbit shows a high eccentricity of 0.29 and is tilted by 3 degrees to the plane of the ecliptic. It has a rotation period of 4.7 hours.[4][6] The Collaborative Asteroid Lightcurve Link (CALL) assumed an geometric albedo of about 0.20, a common value for stony asteroids with a S-type spectral class.[3]
It was named after the wife of Brutus, Porcia, who kills herself at news of her husbands death in Shakespeare's play Julius Caesar.[2]
References
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External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1131 Porzia at the JPL Small-Body Database
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