.png.webp) A three-dimensional model of 631 Philippina based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | August Kopff |
| Discovery site | Heidelberg |
| Discovery date | 21 March 1907 |
| Designations | |
| (631) Philippina | |
| 1907 YJ | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.08 yr (39842 d) |
| Aphelion | 3.0226 AU (452.17 Gm) |
| Perihelion | 2.5641 AU (383.58 Gm) |
| 2.7933 AU (417.87 Gm) | |
| Eccentricity | 0.082065 |
| 4.67 yr (1705.2 d) | |
| 217.70° | |
| 0° 12m 39.996s / day | |
| Inclination | 18.917° |
| 224.709° | |
| 277.857° | |
| Physical characteristics | |
Mean radius | 28.825±0.6 km |
| 5.899 h (0.2458 d) | |
| 0.1760±0.008 | |
| 8.70 | |
631 Philippina is a minor planet orbiting the Sun that was discovered by German astronomer August Kopff on March 21, 1907.
Photometric of this asteroid made in 1981 gave a light curve with a period of 5.92 ± 0.01 hours with a brightness variation of 0.20 in magnitude.[2] In 2007 lightcurve data showed that it rotates every 5.899 ± 0.001 hours.[3]
See also
References
- ↑ Yeomans, Donald K., "631 Philippina", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 5 May 2016.
- ↑ 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, vol. 53, pp. 71–75, Bibcode:1983A&AS...53...71S.
- ↑ Buchheim, Robert K. - Lightcurves for 122 Gerda, 217 Eudora, 631 Phillipina, 670 Ottegebe, and 972 Cohnia (2007)
External links
- 631 Philippina at AstDyS-2, Asteroids—Dynamic Site
- 631 Philippina at the JPL Small-Body Database
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