+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   64 Angelina (A861 EA) Classification: Main-belt Asteroid          SPK-ID: 2000064 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 120 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .124819455467059 3.2479e-08   a 2.685341475936217 6.562e-09 au q 2.35015861516675 8.6594e-08 au i 1.309532839296039 3.435e-06 deg node 309.0981395237536 0.00019171 deg peri 179.6750481805286 0.00019255 deg M 172.350138408814 1.915e-05 deg tp 2458431.003157380398 (2018-Nov-08.50315738) 8.4896e-05 TDB period 1607.302819136524 4.40 5.8915e-06 1.613e-08 d yr n .2239777070716515 8.2098e-10 deg/d Q 3.020524336705684 7.3811e-09 au   Orbit Determination Parameters    # obs. used (total)      2965      data-arc span      58340 days (159.73 yr)      first obs. used      1861-03-08      last obs. used      2020-11-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48764      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 19:03:07   Additional Information  Earth MOID = 1.36503 au   Jupiter MOID = 2.02541 au   T_jup = 3.363  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 7.69   n/a E2021B10   magnitude slope G 0.48   n/a PDS3 (MPC 17257) Fit diameter diameter 58.292 km 1.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 8.752 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Poutanen, M. (1983) in Asteroids, Comets, Meteors. C.-I. Lagerkvist, H. Rickman, eds. Uppsala, pp. 45-48.] [Harris, A.W.; Young, J.W.; Contreiras, L.; Dockweiler, T.; et al. (1989) Icarus 81, 365-374.] [Michalowski, T. (1993) Icarus 106, 563-572.] [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Rosenbush, V.K.; Kiselev, N.N.; Shevchenko, V.G.; Jockers, K.; et al. (2005) Icarus 178, 222-234.] [Durech, J. (2006) IAU 2006, poster paper.] [Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.] [Warner, B.D. (2014) Minor Planet Bull. 41, 102-112.] [Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] geometric albedo albedo 0.483   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.734   0.037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=4.80, mean=9.35, max.=16.41) deg. U-B UB 0.254   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=4.80, mean=9.35, max.=16.41) deg. Tholen spectral type spec_T E   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B Xe   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) 64 Angelina (A861 EA)          Discovered 1861-Mar-04 by Tempel, E. W. at Marseille Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A861 EA = 1930 QY  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-02 05:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin