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631 Philippina (1907 YJ)
Classification: Main-belt Asteroid          SPK-ID: 2000631
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08231209904320261 4.1518e-08  
a 2.792361290132901 1.4264e-08 AU
q 2.562516171055077 1.1697e-07 AU
i 18.91811475966585 5.7914e-06 deg
node 224.7277654042362 1.5376e-05 deg
peri 277.6099322285876 3.5508e-05 deg
M 91.25209463040262 3.2717e-05 deg
tp 2456568.487630774316
(2013-Oct-02.98763077)
0.00015459 JED
period 1704.338443420561
4.67
1.3059e-05
3.575e-08
d
yr
n .2112256526218406 1.6185e-09 deg/d
Q 3.022206409210726 1.5438e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1169  
   data-arc span      39551 days (108.28 yr)  
   first obs. used      1907-03-22  
   last obs. used      2015-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54548  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 13:57:20  

Additional Information
 Earth MOID = 1.64845 AU 
 T_jup = 3.245 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.70 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
diameter diameter 57.65 km 1.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
rotation period rot_per 5.899 h n/a LCDB (Rev. 2015-July); Warner et al., 2009 Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Buchheim, R.K.; Roy, R.; Behrend, R. (2007) Minor Planet Bul. 34, 13-14.]
geometric albedo albedo 0.1760   0.008 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
B-V BV .864 mag .026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=6.32, mean=10.52, max.=15.27) deg.
U-B UB .439 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=6.32, mean=10.69, max.=15.27) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

631 Philippina (1907 YJ)          Discovered 1907-Mar-21 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1907 YJ = 1951 UB1 = A907 GL 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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