| 词条 | 631 Philippina |
| 释义 |
| minorplanet= yes | background= #D6D6D6 | name= 631 Philippina | image= 631Philippina (Lightcurve Inversion).png | image_size = 265 | caption= A three-dimensional model of 631 Philippina based on its light curve | mpc_name= (631) Philippina | alt_names= 1907 YJ | discoverer= August Kopff | discovered= 21 March 1907 | discovery_site= Heidelberg | epoch= 31 July 2016 (JD 2457600.5) | orbit_ref= | eccentricity= 0.082065 | semimajor= {{Convert|2.7933|AU|Gm|abbr=on}} | perihelion= {{Convert|2.5641|AU|Gm|abbr=on}} | aphelion= {{Convert|3.0226|AU|Gm|abbr=on|lk=on}} | period= 4.67 yr (1705.2 d) | inclination= 18.917° | asc_node= 224.709° | arg_peri= 277.857° | mean_anomaly= 217.70° | mean_motion= {{Deg2DMS|0.21111|sup=ms}} / day | observation_arc= 109.08 yr (39842 d) | uncertainty= 0 | abs_magnitude= 8.70 | rotation= {{Convert|5.899|h|d|abbr=on|lk=on}} | albedo= {{val|0.1760|0.008}} | mean_radius= {{val|28.825|0.6}} km }} 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.[1]See also
References1. ^Buchheim, Robert K. - Lightcurves for 122 Gerda, 217 Eudora, 631 Phillipina, 670 Ottegebe, and 972 Cohnia (2007) [2]2. ^1 {{Citation | last1 = Schober | first1 = H. J. | title = 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 | work = Astronomy and Astrophysics Supplement Series | volume = 53 | pages = 71–75 |date=July 1983 | bibcode = 1983A&AS...53...71S | postscript= .}} }} External links
7 : Background asteroids|Discoveries by August Kopff|Minor planets named for people|Named minor planets|S-type asteroids (Tholen)|S-type asteroids (SMASS)|Astronomical objects discovered in 1907 |
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