2260 Neoptolemus
| Discovery | |
|---|---|
| Discovered by | Purple Mountain Observatory |
| Discovery date | November 26, 1975 |
| Designations | |
Named after | Neoptolemus |
| 1975 WM1 | |
| Jupiter Trojan | |
| Orbital characteristics | |
| Epoch February 4, 2008 (JD 2454500.5) | |
| Aphelion | 811.004 Gm (5.421 AU) |
| Perihelion | 741.798 Gm (4.959 AU) |
| 776.401 Gm (5.190 AU) | |
| Eccentricity | 0.045 |
| 4318.565 d (11.82 a) | |
Average orbital speed | 13.07 km/s |
| 294.676° | |
| Inclination | 17.782° |
| 86.570° | |
| Physical characteristics | |
| Dimensions | 71.7 km |
| Mass | 3.9×1017 kg |
Mean density | 2.0 g/cm³ |
Equatorial surface gravity | 0.0200 m/s² |
Equatorial escape velocity | 0.0379 km/s |
| 0.10 | |
| Temperature | ~122 K |
| 9.31 | |
|
| |
2260 Neoptolemus is a Jupiter Trojan asteroid that orbits in the L4 Lagrangian point of the Sun-Jupiter system, in the "Greek Camp" of Trojan asteroids. It was named after the Greek hero Neoptolemus, the son of Achilles. It was discovered by the Purple Mountain Observatory in Nanjing, China on November 26, 1975.
Photometric observations of this asteroid during 2002 were used to build a light curve showing a rotation period of 8.180 ± 0.008 hours with a brightness variation of 0.32 ± 0.01 magnitude.[1]
References
- ↑ Mottola, Stefano; Di Martino, Mario; Erikson, Anders; Gonano-Beurer, Maria; Carbognani, Albino; Carsenty, Uri; Hahn, Gerhard; Schober, Hans-Josef; Lahulla, Felix; Delbò, Marco; Lagerkvist, Claes-Ingvar (May 2011). "Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects". The Astronomical Journal 141 (5): 170. Bibcode:2011AJ....141..170M. doi:10.1088/0004-6256/141/5/170.
External links
- Discovery Circumstances: Numbered Minor Planets
- Orbital simulation from JPL (Java) / Ephemeris
- 2260 Neoptolemus at the JPL Small-Body Database
| ||||||
| ||||||||||||||||||||||||||||
This article is issued from Wikipedia - version of the Wednesday, February 10, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.