271 Penthesilea
Main-belt asteroid
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271 Penthesilea is a mid-sized main belt asteroid that was discovered by Viktor Knorre on 13 October 1887 in Berlin. It was his last asteroid discovery. The asteroid was named after Penthesilea, the mythical Greek queen of the Amazons.[4]
Lightcurve-base 3D-model of 271 Penthesilea. | |
| Discovery | |
|---|---|
| Discovered by | Viktor Knorre |
| Discovery date | 13 October 1887 |
| Designations | |
| (271) Penthesilea | |
| Pronunciation | /ËpÉnθɪsɪËliËÉ/[1] |
Named after | ΠενθεÏίλεια |
| A887 TB, 1916 GG 1916 HA | |
| Main belt | |
| Orbital characteristics[2] | |
| 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) | |
| 243.905° | |
| 0° 11m 21.624s / day | |
| Inclination | 3.5395° |
| 335.367° | |
| 58.345° | |
| Physical characteristics | |
| Dimensions | 57.93±3.3 km |
| 18.787 h (0.7828 d)[2][3] | |
| 0.0633±0.008 | |
| 9.80 | |
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.[3]
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