+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   316 Goberta (A891 RC) Classification: Main-belt Asteroid          SPK-ID: 2000316 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 54 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1324344887445745 3.1281e-08   a 3.188007083932359 1.1801e-08 au q 2.765804995657695 9.7601e-08 au i 2.3415853816984 3.3957e-06 deg node 123.8213722631865 9.4986e-05 deg peri 315.5224026222239 9.6055e-05 deg M 198.3458266795949 1.484e-05 deg tp 2459934.101979188839 (2022-Dec-20.60197919) 8.793e-05 TDB period 2079.109407474589 5.69 1.1544e-05 3.161e-08 d yr n .1731510610772896 9.6139e-10 deg/d Q 3.610209172207023 1.3363e-08 au   Orbit Determination Parameters    # obs. used (total)      3423      data-arc span      47174 days (129.16 yr)      first obs. used      1891-09-08      last obs. used      2020-11-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42224      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:52:42   Additional Information  Earth MOID = 1.78208 au   Jupiter MOID = 1.62801 au   T_jup = 3.183  [ 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 10.13   n/a E2021B10   diameter diameter 56.067 km 0.642 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 8.605 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Menke, J.; Cooney, W.; Gross, J.; Terrell, D. (2008) Minor Planet Bull. 35, 155-160.] geometric albedo albedo 0.061   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   316 Goberta (A891 RC)          Discovered 1891-Sep-08 by Charlois, A. at Nice Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A891 RC = 1938 DO2 = 1939 BB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-27 19:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin