+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05876471213931656 2.1672e-08   a 3.018827831903846 1.3161e-08 au q 2.841427283363859 6.9621e-08 au i 10.30865089179033 1.1917e-06 deg node 30.13650755591463 3.8552e-06 deg peri 65.55803554531789 1.4245e-05 deg M 305.7507167895287 1.2286e-05 deg tp 2459489.200441685977 (2021-Oct-01.70044169) 6.5344e-05 TDB period 1915.82547927362 5.25 1.2528e-05 3.43e-08 d yr n .1879085563349397 1.2288e-09 deg/d Q 3.196228380443833 1.3934e-08 au   Orbit Determination Parameters    # obs. used (total)      3026      data-arc span      23149 days (63.38 yr)      first obs. used      1957-10-20      last obs. used      2021-03-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .38797      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 14:15:56   Additional Information  Earth MOID = 1.87616 au   Jupiter MOID = 1.94793 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 11.54   n/a E2021B10   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 ] 2021-May-09 15:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin