451 Patientia
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| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 1899-12-04 |
| Designations | |
| Pronunciation | /peɪˈʃɛnʃə/ pay-SHEN-shə |
| Named after | patience |
| Alternative names | 1899 EY |
| Minor planet category | Asteroid belt |
| Orbital characteristics[1] | |
| Epoch November 30, 2008 | |
| Aphelion | 3.295 AU (Q) |
| Perihelion | 2.823 AU (q) |
| Semi-major axis | 3.059 AU (a) |
| Eccentricity | 0.0772 |
| Orbital period | 5.35 yr |
| Average orbital speed | 17.03 km/s |
| Mean anomaly | 120.85° (M) |
| Inclination | 15.22° |
| Longitude of ascending node | 89.38° |
| Argument of perihelion | 340.0° |
| Physical characteristics | |
| Dimensions | 234.42 ± 10.17[2] km |
| Mass | (1.09 ± 0.53) × 1019[2] kg |
| Mean density | 1.60 ± 0.80[2] g/cm3 |
| Rotation period | 9.727 h[1] |
| Albedo | 0.07[1] |
| Absolute magnitude (H) | 6.65[1] |
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451 Patientia is a minor planet of the asteroid belt with a diameter of 225 km, making it one of the larger asteroids in the belt. It was discovered by French astronomer Auguste Charlois on December 4, 1899 and assigned a provisional designation 1899 EY.
It regularly reaches 11th magnitude in brightness, as in January 11, 2013 and December 12, 2017 when in favorable oppositions will be at magnitudes 10.7 and 10.4 respectively, very bright for a later-discovered minor planet.
Multiple photometric studies of this asteroid were performed between 1969 and 2003. The combined data gave an irregular light curve with a synodic period of 9.730 ± 0.004 hours and a brightness variation of 0.05–0.10 in magnitude.[3]
References
- ↑ 1.0 1.1 1.2 1.3 Yeomans, Donald K., "451 Patientia", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-30.
- ↑ 2.0 2.1 2.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: 98-118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- ↑ Michałowski, T. et al. (April 2005), "Photometry and models of selected main belt asteroids. II. 173 Ino, 376 Geometria, and 451 Patientia", Astronomy and Astrophysics 443 (1): 329–335, Bibcode:2005A&A...443..329M, doi:10.1051/0004-6361:20053656.
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