+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   12 Victoria (A850 RA) Classification: Main-belt Asteroid          SPK-ID: 2000012 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 120 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2204390913471252 2.4472e-08   a 2.333777698677048 2.3631e-09 au q 1.819321863374495 5.7283e-08 au i 8.372748506371842 2.5112e-06 deg node 235.4010322830478 1.9021e-05 deg peri 69.69422268903102 1.9933e-05 deg M 243.8347334038363 7.3893e-06 deg tp 2459420.705224463486 (2021-Jul-25.20522446) 2.7097e-05 TDB period 1302.229876790475 3.57 1.9779e-06 5.415e-09 d yr n .2764488869563257 4.1988e-10 deg/d Q 2.848233533979602 2.884e-09 au   Orbit Determination Parameters    # obs. used (total)      3260      data-arc span      62043 days (169.86 yr)      first obs. used      1850-09-18      last obs. used      2020-07-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54691      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:07:55   Additional Information  Earth MOID = .82468 au   Jupiter MOID = 2.43354 au   T_jup = 3.522  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 7.3   n/a MPO502153 IRAS observations used: 6 magnitude slope G 0.22   n/a PDS3 (MPC 17257) Fit diameter diameter 115.087 km 1.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 8.6599 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 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) Planet. 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] [Pilcher, F. (2013) Minor Planet Bull. 40, 161-163.] [Melillo, F.J. (2015) Minor Planet Bull. 42, 94-95.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] [Viikinkoski, M.; Hanus, J.; Kaasalainen, M.; Marchis, F.; Durech, J. (2017) Astron. Astrophys. 607, A117.] geometric albedo albedo 0.163   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.874   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=8; phase (min.=3.49, mean=11.59, max.=21.82) deg. U-B UB 0.515   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A850 RA)          Discovered 1850-Sep-13 by Hind, J. R. at London Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Sep-29 02:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin