178 Belisana
Belisana (minor planet designation: 178 Belisana) is a stony background asteroid from the inner regions of the asteroid belt, approximately 38 kilometers (24 miles) in diameter. It was discovered on 6 November 1877, by Austrian astronomer Johann Palisa at the Austrian Naval Observatory in today's Croatia. The S-type asteroid has a rotation period of 12.32 hours and a rather spherical shape. It was named after the Celtic goddess Belisama (Belisana).
Lightcurve-based 3D-model of Belisana | |
| Discovery | |
|---|---|
| Discovered by | J. Palisa |
| Discovery site | Austrian Naval Obs. |
| Discovery date | 6 November 1877 |
| Designations | |
MPC designation | (178) Belisana |
| Pronunciation | /bɛˈlɪsənə/ |
Named after | Bēlēsama (Celtic mythology) |
Alternative designations | A877 VB; 1899 LE; 1904 UA; 1935 UA1 |
Minor planet category | main-belt · (inner) background |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 132.36 yr (48,345 d) |
| Aphelion | 2.5667 AU |
| Perihelion | 2.3536 AU |
Semi-major axis | 2.4601 AU |
| Eccentricity | 0.0433 |
Orbital period (sidereal) | 3.86 yr (1,409 d) |
Mean anomaly | 272.93° |
Mean motion | 0° 15m 19.44s / day |
| Inclination | 1.8950° |
Longitude of ascending node | 51.109° |
| 212.67° | |
| Physical characteristics | |
Mean diameter | 35.50 km (derived) 35.81±0.9 km 38.26±1.12 km 42.09±11.05 km |
Synodic rotation period | 12.31±0.07 h 12.32±0.05 h 12.321±0.003 h 12.323±0.002 h 24.6510±0.0003 h |
| 0.2026 (derived) 0.214±0.016 0.22±0.09 0.2438±0.013 | |
| Tholen = S SMASS = S · S B–V = 0.904 U–B = 0.486 | |
| 9.38 9.4 9.52 9.6 9.66±0.79 | |
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