+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   12 Victoria Classification: Main-belt Asteroid          SPK-ID: 2000012 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 84 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2213371599743561 2.7321e-08   a 2.333142240634758 2.0741e-09 AU q 1.816731163276455 6.4132e-08 AU i 8.369396427532545 2.7051e-06 deg node 235.4909899126679 2.1155e-05 deg peri 69.62194545877365 2.2044e-05 deg M 245.1665963367591 6.9696e-06 deg tp 2456815.717824179610 (2014-Jun-07.21782418) 2.5455e-05 JED period 1301.698042000203 3.56 1.7358e-06 4.752e-09 d yr n .2765618356825827 3.6879e-10 deg/d Q 2.849553317993061 2.5332e-09 AU   Orbit Determination Parameters    # obs. used (total)      2273      data-arc span      59371 days (162.55 yr)      first obs. used      1850-09-18      last obs. used      2013-04-07      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .62267      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 12:31:19   Additional Information  Earth MOID = .822068 AU   T_jup = 3.522  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 7.24 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6 magnitude slope G 0.22   n/a PDS3 (MPC 17257) Fit diameter diameter 112.77 km 3.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6 rotation period rot_per 8.6599 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Tempesti, P.; Burchi, R. (1969) Mem. Soc. Astron. Ital. 40, 415-432.] [Burchi, R.; D'Ambrosio, V.; Tempesti, P.; Lanciano, N. (1985) Astron. Astrophys. Suppl. Ser. 60, 9-15.] [Erikson, A. (1990) in Asteroids, Comets, Meteors III. C.-I. Lagerkvist, H. Rickman, B.A. Lindblad, M. Lindgren, eds. Uppsala, p. 55-58.] [Dotto, E.; De Angelis, G.; Di Martino, M.; Barucci, M.A.; et al. (1995) Icarus 117, 313-327.] [Riccioli, D.; Blanco, C.; Cigna, M. (2001) Planetary and Space Sci. 49, 657-671.] [Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.] [Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.1765   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6 B-V BV .874 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=8; phase (min.=3.49, mean=11.59, max.=21.82) deg. U-B UB .515 mag .022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=8; phase (min.=3.49, mean=13.00, max.=21.82) deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B L   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) 12 Victoria          Discovered 1850-Sep-13 by Hind, J. R. at London Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-20 09:43 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin