+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2787 Tovarishch (1978 RC6) Classification: Main-belt Asteroid          SPK-ID: 2002787 [ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05861644455667737 3.415e-08   a 3.018579347624084 1.5868e-08 au q 2.841640958654145 1.0456e-07 au i 10.30898814888858 4.3699e-06 deg node 30.13612673125658 2.1601e-05 deg peri 65.5988447860824 4.4457e-05 deg M 268.1106506664662 3.8591e-05 deg tp 2459489.450615300733 (2021-Oct-01.95061530) 0.00020595 TDB period 1915.588942406702 5.24 1.5105e-05 4.136e-08 d yr n .1879317592780131 1.4819e-09 deg/d Q 3.195517736594022 1.6798e-08 au   Orbit Determination Parameters    # obs. used (total)      2345      data-arc span      22868 days (62.61 yr)      first obs. used      1957-10-20      last obs. used      2020-05-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42965      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:49:51   Additional Information  Earth MOID = 1.8767 au   Jupiter MOID = 1.94903 au   T_jup = 3.220  [ 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 11.4   n/a MPO435724   diameter diameter 19.707 km 0.362 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.125   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   2787 Tovarishch (1978 RC6)          Discovered 1978-Sep-13 by Chernykh, N. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1978 RC6 = 1957 UY = 1970 EB1 = 1976 JO3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-04 22:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin