+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   512 Taurinensis (A903 MC) Classification: Mars-crossing Asteroid          SPK-ID: 2000512 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 74 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2538943214589399 3.2537e-08   a 2.189354452888138 4.5205e-09 au q 1.633489789638996 7.0909e-08 au i 8.747935569883103 3.1202e-06 deg node 107.0270319281112 2.4128e-05 deg peri 249.2122574712574 2.4866e-05 deg M 36.1746466124179 6.9123e-06 deg tp 2459081.602056888503 (2020-Aug-20.10205689) 2.2699e-05 TDB period 1183.239189002762 3.24 3.6647e-06 1.003e-08 d yr n .3042495577782623 9.423e-10 deg/d Q 2.745219116137281 5.6682e-09 au   Orbit Determination Parameters    # obs. used (total)      3123      data-arc span      40826 days (111.78 yr)      first obs. used      1909-04-11      last obs. used      2021-01-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .40259      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:47:18   Additional Information  Earth MOID = .651659 au   Jupiter MOID = 2.73426 au   T_jup = 3.617  [ 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 10.81   n/a E2021B10 IRAS observations used: 5 diameter diameter 23.09 km 1.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5 rotation period rot_per 5.585 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Lagerkvist, C.-I.; Kamel, L. (1982) Moon Planets 27, 463-466.] [Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.] [Piironen, J.; Lagerkvist, C.-I.; Erikson, A.; Oja, T.; et al. (1998) Astron. Astrophys. Suppl. Ser. 128, 525-540.] [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.] [Benishek, V. (2016) Minor Planet Bull. 43, 339-342.] geometric albedo albedo 0.1772   0.024 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5 B-V BV 0.917   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=10.75, mean=15.90, max.=29.56) deg. U-B UB 0.525   0.009 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=10.75, mean=14.22, max.=19.90) 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 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) 512 Taurinensis (A903 MC)          Discovered 1903-Jun-23 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  A903 MC = A909 GE  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-07 22:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin