331 Etheridgea
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 1 April 1892 |
| Designations | |
| MPC designation | (331) Etheridgea |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 123.95 yr (45274 d) |
| Aphelion | 3.32623 AU (497.597 Gm) |
| Perihelion | 2.72055 AU (406.988 Gm) |
| 3.02339 AU (452.293 Gm) | |
| Eccentricity | 0.10016 |
| 5.26 yr (1920.2 d) | |
Average orbital speed | 17.13 km/s |
| 88.5392° | |
| 0° 11m 14.939s / day | |
| Inclination | 6.05385° |
| 22.0346° | |
| 333.055° | |
| Earth MOID | 1.71692 AU (256.848 Gm) |
| Jupiter MOID | 2.10384 AU (314.730 Gm) |
| Jupiter Tisserand parameter | 3.229 |
| Physical characteristics | |
| Dimensions | 74.92±2.7 km |
| Mass | unknown |
Mean density | unknown |
Equatorial surface gravity | unknown |
Equatorial escape velocity | unknown |
| 25.315 h (1.0548 d) | |
| 0.0447±0.003 | |
| Temperature | unknown |
| unknown | |
| 9.62 | |
|
| |
331 Etheridgea is a large main belt asteroid.[1] It was discovered by Auguste Charlois on 1 April 1892 in Nice.
References
- 1 2 "331 Etheridgea". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
External links
- Lightcurve plot of 331 Etheridgea, Palmer Divide Observatory, B. D. Warner (1999)
- 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
- 331 Etheridgea at the JPL Small-Body Database
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