Astronomy:172 Baucis
 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | A. Borrelly |
| Discovery date | 5 February 1877 |
| Designations | |
| (172) Baucis | |
| Pronunciation | /ˈbɔːsɪs/[1] |
| Named after | Baucis |
| A877 CA; 1921 EE | |
| Minor planet category | Main belt |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 133.62 yr (48806 d) |
| |{{{apsis}}}|helion}} | 2.6525 astronomical unit|AU (396.81 Gm) |
| |{{{apsis}}}|helion}} | 2.1073 AU (315.25 Gm) |
| 2.3799 AU (356.03 Gm) | |
| Eccentricity | 0.11454 |
| Orbital period | 3.67 yr (1341.0 d) |
| Mean anomaly | 175.49° |
| Mean motion | 0° 16m 6.42s / day |
| Inclination | 10.028° |
| Longitude of ascending node | 331.98° |
| 359.20° | |
| Earth MOID | 1.09593 AU (163.949 Gm) |
| Jupiter MOID | 2.67257 AU (399.811 Gm) |
| TJupiter | 3.510 |
| Physical characteristics | |
| Mean radius | 31.215±0.6 km |
| Rotation period | 27.417 h (1.1424 d)[2][3] |
| Geometric albedo | 0.1382±0.006 |
| S | |
| Absolute magnitude (H) | 8.79 |
Baucis (minor planet designation: 172 Baucis) is a large main belt asteroid that was discovered by French astronomer Alphonse Borrelly on February 5, 1877, and named after a fictional character in the Greek legend of Baucis and Philemon. The adjectival form of the name is Baucidian. It is classified as an S-type asteroid based upon its spectrum.
Photometric observations of this asteroid from the southern hemisphere during 2003 gave a light curve that indicated a slow synodic rotation period of 27.417 ± 0.013 hours and a brightness variation of 0.25 in magnitude.[3]
Polarimetric study of this asteroid reveals anomalous properties that suggests the regolith consists of a mixture of low and high albedo material. This may have been caused by fragmentation of an asteroid substrate with the spectral properties of CO3/CV3 carbonaceous chondrites.[4]
References
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 2.0 2.1 Yeomans, Donald K., "172 Baucis", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=172, retrieved 6 May 2016.
- ↑ 3.0 3.1 Bembrick, C. S. et al. (September 2004), "172 Baucis - a slow rotator", The Minor Planet Bulletin 31 (3): pp. 51–52, Bibcode: 2004MPBu...31...51B.
- ↑ Gil-Hutton, R. et al. (April 2008), "New cases of unusual polarimetric behavior in asteroids", Astronomy and Astrophysics 482 (1): pp. 309–314, doi:10.1051/0004-6361:20078965, Bibcode: 2008A&A...482..309G.
External links
- 172 Baucis at AstDyS-2, Asteroids—Dynamic Site
- 172 Baucis at the JPL Small-Body Database
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