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]
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]