146 Lucina
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A three-dimensional model of 146 Lucina based on its light curve.
|
|
| Discovery[1] | |
|---|---|
| Discovered by | Alphonse Borrelly |
| Discovery date | June 8, 1875 |
| Designations | |
| Main belt | |
| Orbital characteristics[2][1] | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 433.156 Gm (2.895 AU) |
| Perihelion | 380.397 Gm (2.543 AU) |
| 406.777 Gm (2.719 AU) | |
| Eccentricity | 0.065 |
| 1637.739 d (4.48 a) | |
|
Average orbital speed
|
18.04 km/s |
| 152.155° | |
| Inclination | 13.074° |
| 84.177° | |
| 143.509° | |
| Physical characteristics | |
| Dimensions | 131.893[2] km |
| Mass | 2.4×1018 kg |
|
Mean density
|
2.0 g/cm³ |
|
Equatorial surface gravity
|
0.0369 m/s² |
|
Equatorial escape velocity
|
0.0699 km/s |
| 0.0496 ± 0.0107[2] | |
| Temperature | ~169 K |
| C[2] (Tholen) | |
| 8.277[2] | |
146 Lucina is a main-belt asteroid that was discovered by Alphonse Borrelly on June 8, 1875, and named after Lucina, the Roman goddess of childbirth. It is large, dark and has a carbonaceous composition.
Photometric observations of this asteroid made during 1979 and 1981 gave a light curve with a period of 18.54 hours.[3]
Two stellar occultations by Lucina have been observed so far, in 1982 and 1989. During the first event, a possible small satellite with an estimated 5.7 km diameter was detected at a distance of 1,600 km from 146 Lucina.[4] A 1992 search using a CCD failed to discover a satellite larger than 0.6 km, although it may have been obscured by occultation mask.[5] Further evidence for a satellite emerged in 2003, this time based on astrometric measurements.[6]
References
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- ↑ 2.0 2.1 2.2 2.3 Lua error in package.lua at line 80: module 'strict' not found. See Table 4.
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- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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