1177 Gonnessia
| Discovery | |
|---|---|
| Discovered by | L. Boyer |
| Discovery site | Algiers Observatory |
| Discovery date | 24 November 1930 |
| Designations | |
| MPC designation | (1177) Gonnessia |
|
Named after
|
François Gonnessiat |
| 1930 WA · A923 RO | |
| main-belt (outer) | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.12 yr (31089 days) |
| Aphelion | 3.4542 AU (516.74 Gm) |
| Perihelion | 3.2445 AU (485.37 Gm) |
| 3.3493 AU (501.05 Gm) | |
| Eccentricity | 0.031298 |
| 6.13 yr (2238.9 d) | |
| 280.68° | |
| 0° 9m 38.844s / day | |
| Inclination | 15.068° |
| 252.16° | |
| 241.29° | |
| Earth MOID | 2.28571 AU (341.937 Gm) |
| Jupiter MOID | 1.72873 AU (258.614 Gm) |
| Jupiter Tisserand parameter | 3.102 |
| Physical characteristics | |
| Dimensions | 92 km |
|
Mean radius
|
45.99±4.95 km |
| 30.51 h (1.271 d) | |
| 0.0398±0.010 | |
|
B–V = 0.668 U–B = 0.244 Tholen = XFU |
|
| 9.30 | |
1177 Gonnessia, provisional designation 1930 WA, is a large, 92-kilometer in diameter asteroid of the outer main-belt. It was discovered on November 24, 1930, by French astronomer Louis Boyer at Algiers Observatory, Algeria, Northern Africa. It has the unusual spectral class XFU in the Tholen classification system.
The asteroid is named after François Gonnessiat (1856–1934), director of the Algiers Bouzaréah and Quito Observatories.
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