271 Penthesilea
| Discovery | |
|---|---|
| Discovered by | Viktor Knorre |
| Discovery date | 13 October 1887 |
| Designations | |
Named after | Penthesilea |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 112.35 yr (41037 d) |
| Aphelion | 3.3147 AU (495.87 Gm) |
| Perihelion | 2.69235 AU (402.770 Gm) |
| 3.0035 AU (449.32 Gm) | |
| Eccentricity | 0.10361 |
| 5.21 yr (1901.3 d) | |
Average orbital speed | 17.17 km/s |
| 243.905° | |
| 0° 11m 21.624s / day | |
| Inclination | 3.5395° |
| 335.367° | |
| 58.345° | |
| Earth MOID | 1.69911 AU (254.183 Gm) |
| Jupiter MOID | 2.11447 AU (316.320 Gm) |
| TJupiter | 3.241 |
| Physical characteristics | |
| Dimensions | 57.93±3.3 km |
| 18.787 h (0.7828 d)[1][2] | |
| 0.0633±0.008 | |
| 9.80 | |
271 Penthesilea is a large main belt asteroid that was discovered by Viktor Knorre on October 13, 1887 in Berlin. It was his last asteroid discovery. The asteroid was named after Penthesilea, the mythical Greek queen of the Amazons.[3]
Photometric observations of this asteroid were made in early 2009 at the Organ Mesa Observatory in Las Cruces, New Mexico. The resulting light curve shows a synodic rotation period of 18.787 ± 0.001 hours with a brightness variation of 0.32 ± 0.04 in magnitude.[2]
References
- ^ a b Yeomans, Donald K., "271 Penthesilea", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 11 May 2016.
- ^ a b Pilcher, Frederick (July 2009), "Rotation Period Determinations for 120 Lachesis, 131 Vala 157 Dejanira, and 271 Penthesilea", The Minor Planet Bulletin, vol. 36, no. 3, pp. 100–102, Bibcode:2009MPBu...36..100P.
- ^ Schmadel, Lutz D.; International Astronomical Union (2003). Dictionary of minor planet names. Berlin; New York: Springer-Verlag. p. 39. ISBN 978-3-540-00238-3. Retrieved 9 September 2011.
External links
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