1131 Porzia
| Discovery [1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 10 September 1929 |
| Designations | |
| 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 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.92 yr (31384 days) |
| Aphelion | 2.8672 AU (428.93 Gm) |
| Perihelion | 1.5888 AU (237.68 Gm) |
| 2.2280 AU (333.30 Gm) | |
| Eccentricity | 0.28688 |
| 3.33 yr (1214.7 d) | |
| 46.636° | |
| 0° 17m 46.932s / day | |
| Inclination | 3.2293° |
| 100.72° | |
| 248.02° | |
| Earth MOID | 0.585127 AU (87.5338 Gm) |
| Jupiter MOID | 2.55508 AU (382.235 Gm) |
| TJupiter | 3.587 |
| Physical characteristics | |
| Dimensions | 7.13 km (calculated)[3] |
| 4.6584 h (0.19410 d)[1][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
- ^ a b c d "JPL Small-Body Database Browser: 1131 Porzia (1929 RO)" (2015-08-14 last obs.). Jet Propulsion Laboratory. Retrieved 1 May 2016.
- ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1131) Porzia. Springer Berlin Heidelberg. p. 96. ISBN 978-3-540-29925-7. Retrieved 24 November 2015.
- ^ a b c d e "LCDB Data for (1131) Porzia". Asteroid Lightcurve Database (LCDB). Retrieved 24 November 2015.
- ^ a b Benishek, Vladimir; Protitch-Benishek, Vojislava (April 2010). "Period Determination for 1131 Porzia and 1819 Laputa". The Minor Planet Bulletin. 37 (2): 64–65. Bibcode:2010MPBu...37...64B. ISSN 1052-8091. Retrieved 24 November 2015.
- ^ Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (March 1995). "Photoelectric Observations of 125 Asteroids". Abstracts of the Lunar and Planetary Science Conference. Bibcode:1995LPI....26.1511W. Retrieved 24 November 2015.
- ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (1131) Porzia". Geneva Observatory. Retrieved 24 November 2015.
- ^ "1131 Porzia (1929 RO)". Minor Planet Center. Retrieved 24 November 2015.
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
