+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   872 Holda (A917 KH) Classification: Main-belt Asteroid          SPK-ID: 2000872 [ 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 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07862668376343732 3.2752e-08   a 2.73160745256989 8.476e-09 au q 2.516830217230829 9.1463e-08 au i 7.374348391460333 3.6675e-06 deg node 194.7209186573815 2.5805e-05 deg peri 18.01493796298354 3.4579e-05 deg M 313.3121787378599 2.3867e-05 deg tp 2459214.358721937934 (2020-Dec-30.85872194) 0.00010957 TDB period 1649.019761821437 4.51 7.6752e-06 2.101e-08 d yr n .2183115135032458 1.0161e-09 deg/d Q 2.946384687908951 9.1425e-09 au   Orbit Determination Parameters    # obs. used (total)      3537      data-arc span      43725 days (119.71 yr)      first obs. used      1900-09-26      last obs. used      2020-06-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42726      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:22:00   Additional Information  Earth MOID = 1.51238 au   Jupiter MOID = 2.01544 au   T_jup = 3.338  [ 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 10.1   n/a MPO502161 IRAS observations used: 9 diameter diameter 34.431 km 0.322 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 5.945 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [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] [Brinsfield, J.W. (2007) Minor Planet Bull. 34, 108-110.] [Fauerbach, M.; Marks, S.A.; Lucas, M.P. (2008) Minor Planet Bull. 35, 44-46.] [Sheridan, E.E. (2009) Minor Planet Bull. 36, 55-56.] [Kaminski, L.J.; Leake, M.A.; Berget, D.J. (2010) J. SE Assoc. for Research in Astron. 3, 25-31.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] geometric albedo albedo 0.165   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.726   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.45, mean=5.58, max.=5.71) deg. U-B UB 0.275   0.055 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.45, mean=5.58, max.=5.71) deg. Tholen spectral type spec_T M   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B X   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) 872 Holda (A917 KH)          Discovered 1917-May-21 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  A917 KH = 1948 EE = 1949 OD1 = A900 SA = A913 NA = A916 AB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-28 13:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin