Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08232459816447253 4.1794e-08  
a 2.791983367536549 1.4432e-08 AU
q 2.562134458722212 1.1796e-07 AU
i 18.91939792442001 5.8281e-06 deg
node 224.7279426909425 1.5482e-05 deg
peri 277.5091122603317 3.5694e-05 deg
M 49.09806801753001 3.2884e-05 deg
tp 2456568.103507291185
(2013-Oct-02.60350729)
0.00015548 JED
period 1703.992453334463
4.67
1.3212e-05
3.617e-08
d
yr
n .2112685412987204 1.6381e-09 deg/d
Q 3.021832276350886 1.562e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1110  
   data-arc span      39176 days (107.26 yr)  
   first obs. used      1907-03-22  
   last obs. used      2014-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55851  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:55:47  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Jul-29 16:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin