Misplaced Pages

631 Philippina

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
MPC designation	(631) Philippina
Alternative designations	1907 YJ
Orbital characteristics
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)
Semi-major axis	2.7933 AU (417.87 Gm)
Eccentricity	0.082065
Orbital period (sidereal)	4.67 yr (1705.2 d)
Mean anomaly	217.70°
Mean motion	0° 12 39.996 / day
Inclination	18.917°
Longitude of ascending node	224.709°
Argument of perihelion	277.857°
Physical characteristics
Mean radius	28.825±0.6 km
Synodic rotation period	5.899 h (0.2458 d)
Geometric albedo	0.1760±0.008
Absolute magnitude (H)	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. In 2007 lightcurve data showed that it rotates every 5.899 ± 0.001 hours.

See also

• List of minor planets: 1–1000

References

1. Yeomans, Donald K., "631 Philippina", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 5 May 2016.
2. 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.
3. 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
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 631 Philippina at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

This article about an asteroid native to the asteroid belt is a stub. You can help Misplaced Pages by expanding it.

• v
• t
• e

• Minor planet object articles (numbered)
• Background asteroids
• Discoveries by August Kopff
• Named minor planets
• S-type asteroids (Tholen)
• S-type asteroids (SMASS)
• Astronomical objects discovered in 1907
• Main-belt-asteroid stubs