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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .082324638785907 5.7996e-08  
a 2.791983369505722 1.3631e-08 AU
q 2.562134347114904 1.6294e-07 AU
i 18.91940342325969 8.4237e-06 deg
node 224.7279358335686 1.994e-05 deg
peri 277.5090784829196 5.4424e-05 deg
M 49.09810495457644 5.1038e-05 deg
tp 2456568.103332210744
(2013-Oct-02.60333221)
0.00024148 JED
period 1703.992455137191
4.67
1.2479e-05
3.417e-08
d
yr
n .2112685410752103 1.5471e-09 deg/d
Q 3.02183239189654 1.4753e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1061  
   data-arc span      39097 days (107.04 yr)  
   first obs. used      1907-03-22  
   last obs. used      2014-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56474  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:35:53  

Additional Information
 Earth MOID = 1.64772 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Schober, H.J. (1983) Astron. Astrophys. Suppl. Ser. 53, 71.]
[Hainaut-Rouelle, M.-C.; Hainaut, O.R.; Detal, A. (1995) Astron. Astrophys. Suppl. Ser. 112, 125-142.]
[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]
[Durech, J. (2006) IAU 2006, poster paper.]
[Buchheim, R.K.; Roy, R.; Behrend, R. (2007) Minor Planet Bul. 34, 13-14.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
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 (024)
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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