146 Lucina Explained

Minorplanet:yes
Background:
  1. D6D6D6
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.

Notes and References

  1. Web site: Discovery Circumstances: Numbered Minor Planets . 22 June 2004 . 10 May 2008 . https://web.archive.org/web/20080510154135/http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html . dead .
  2. Noah Webster (1884) A Practical Dictionary of the English Language
  3. Web site: The Asteroid Orbital Elements Database . astorb . .