| Minorplanet: | yes |
| Background: |
|
| 146 Lucina | |
| Discovery Ref: | [1] |
| Discovered: | 8 June 1875 |
| Mpc Name: | (146) Lucina |
| Alt Names: | A875 LC; 1950 CY |
| Pronounced: | [2] or as Latin Lūcīna |
| Orbit Ref: | [3] |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Semimajor: | 2.71793AU |
| Perihelion: | 2.53641AU |
| Aphelion: | 2.89945abbr=onNaNabbr=on |
| Eccentricity: | 0.066786 |
| Period: | 4.48 yr (1636.6 d) |
| Inclination: | 13.0947° |
| Asc Node: | 83.9692° |
| Arg Peri: | 146.982° |
| Avg Speed: | 18.04 km/s |
| Dimensions: | 131.893 km |
| Mass: | 2.4 kg |
| Density: | 2.0 g/cm3 |
| Surface Grav: | 0.0369 m/s² |
| Escape Velocity: | 0.0699 km/s |
| Spectral Type: | C (Tholen) |
| Abs Magnitude: | 8.20, 8.277 |
| Albedo: | 0.0496 ± 0.0107 |
| Mean Motion: | / day |
| Observation Arc: | 130.35 yr (47610 d) |
| Uncertainty: | 0 |
| Rotation: | 18.557abbr=onNaNabbr=on |
| Moid: | 1.53233AU |
| Jupiter Moid: | 2.14062AU |
| Tisserand: | 3.319 |
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. The spectra of the asteroid displays evidence of aqueous alteration.
Photometric observations of this asteroid made during 1979 and 1981 gave a light curve with a period of 18.54 hours.
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. 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. Further evidence for a satellite emerged in 2003, this time based on astrometric measurements.