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Discovery[1] and designation
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|---|---|
| Discovered by | Alphonse Borrelly |
| Discovery date | June 8, 1875 |
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Designations
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| Alternate name(s) | |
| Minor planet category |
Main belt |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 433.156 Gm (2.895 AU) |
| Perihelion | 380.397 Gm (2.543 AU) |
| Semi-major axis | 406.777 Gm (2.719 AU) |
| Eccentricity | 0.065 |
| Orbital period | 1637.739 d (4.48 a) |
| Average orbital speed | 18.04 km/s |
| Mean anomaly | 152.155° |
| Inclination | 13.074° |
| Longitude of ascending node | 84.177° |
| Argument of perihelion | 143.509° |
| Dimensions | 132.2 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 |
| Sidereal rotation period |
? d |
| Axial tilt | ?° |
| Pole ecliptic latitude | ? |
| Pole ecliptic longitude | ? |
| Geometric albedo | 0.10 |
| Temperature | ~169 K |
| Spectral type | C |
| Absolute magnitude (H) | 8.20 |
146 Lucina is a main-belt asteroid. It is large, dark and has a carbonaceous composition.
It was discovered by Alphonse Borrelly on June 8, 1875, and named after Lucina, the Roman goddess of childbirth.
Two stellar occultations by Lucina have been observed so far, in 1982 and 1989. During the first event, a possible small satellite (6 km in diameter) was detected.
Further evidence for a satellite emerged in 2003, this time based on astrometric measurements [3].
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