Astronomy:146 Lucina
.png) A three-dimensional model of 146 Lucina based on its light curve. | |
| Discovery[1] | |
|---|---|
| Discovered by | Alphonse Borrelly |
| Discovery date | 8 June 1875 |
| Designations | |
| (146) Lucina | |
| Pronunciation | /luːˈsaɪnə/[2] or as Latin Lūcīna[3] |
| A875 LC; 1950 CY | |
| Minor planet category | Main belt |
| Orbital characteristics[4][5] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 130.35 yr (47610 d) |
| |{{{apsis}}}|helion}} | 2.89945 astronomical unit|AU (433.752 Gm) |
| |{{{apsis}}}|helion}} | 2.53641 AU (379.442 Gm) |
| 2.71793 AU (406.597 Gm) | |
| Eccentricity | 0.066786 |
| Orbital period | 4.48 yr (1636.6 d) |
| Average Orbital speed | 18.04 km/s |
| Mean anomaly | 198.102° |
| Mean motion | 0° 13m 11.863s / day |
| Inclination | 13.0947° |
| Longitude of ascending node | 83.9692° |
| 146.982° | |
| Earth MOID | 1.53233 AU (229.233 Gm) |
| Jupiter MOID | 2.14062 AU (320.232 Gm) |
| TJupiter | 3.319 |
| Physical characteristics | |
| Dimensions | 132.21±2.4 km[5] 131.893 km[6] |
| 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 |
| Rotation period | 18.557 h (0.7732 d) |
| Geometric albedo | 0.0531±0.002[5] 0.0496 ± 0.0107[6] |
| Physics | ~169 K |
| C[6] (Tholen) | |
| Absolute magnitude (H) | 8.20,[5] 8.277[6] |
Lucina (minor planet designation: 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.[7]
Photometric observations of this asteroid made during 1979 and 1981 gave a light curve with a period of 18.54 hours.[8]
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.[9] 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.[10] Further evidence for a satellite emerged in 2003, this time based on astrometric measurements.[11]
References
- ↑ "Discovery Circumstances: Numbered Minor Planets". http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html.
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ Lucina
- ↑ "The Asteroid Orbital Elements Database". Lowell Observatory. http://ftp.lowell.edu/pub/elgb/astorb.html.
- ↑ 5.0 5.1 5.2 5.3 Yeomans, Donald K., "146 Lucina", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=146, retrieved 12 May 2016.
- ↑ 6.0 6.1 6.2 6.3 Pravec, P. et al. (May 2012), "Absolute Magnitudes of Asteroids and a Revision of Asteroid Albedo Estimates from WISE Thermal Observations", Asteroids, Comets, Meteors 2012, Proceedings of the conference held May 16–20, 2012 in Niigata, Japan 1667 (1667): pp. 6089, Bibcode: 2012LPICo1667.6089P. See Table 4.
- ↑ Fornasier, S. et al. (February 1999), "Spectroscopic comparison of aqueous altered asteroids with CM2 carbonaceous chondrite meteorites", Astronomy and Astrophysics Supplement 135: 65−73, doi:10.1051/aas:1999161, Bibcode: 1999A&AS..135...65F.
- ↑ Schober, H. J. (July 1983), "The large C-type asteroids 146 Lucina and 410 Chloris, and the small S-type asteroids 152 Atala and 631 Philippina - Rotation periods and lightcurves", Astronomy and Astrophysics Supplement Series 53: 71–75, Bibcode: 1983A&AS...53...71S.
- ↑ Arlot, J. E. et al. (February 1985), "A possible satellite of (146) Lucina", Icarus 61 (2): 224–231, doi:10.1016/0019-1035(85)90104-6, Bibcode: 1985Icar...61..224A.
- ↑ Stern, S. Alan; Barker, Edwin S. (December 1992), "A CCD search for distant satellites of asteroids 3 Juno and 146 Lucina", In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991: pp. 577–581, Bibcode: 1992acm..proc..577S.
- ↑ Kikwaya, J.-B. et al. (March 2003), "Does 146 Lucina Have a Satellite? An Astrometric Approach", 34th Annual Lunar and Planetary Science Conference, March 17–21, 2003, League City, Texas, abstract no.1214: pp. 1214, Bibcode: 2003LPI....34.1214K.
External links
- 146 Lucina at AstDyS-2, Asteroids—Dynamic Site
- 146 Lucina at the JPL Small-Body Database
 |  |
