+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   109784 (2001 RV87) Classification: Main-belt Asteroid          SPK-ID: 2109784 [ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05129167689223627 5.049e-08   a 2.471326880026956 1.1786e-08 au q 2.344568380201515 1.2229e-07 au i 9.680462377831995 5.3683e-06 deg node 181.489430271116 2.0594e-05 deg peri 352.5421543565853 4.431e-05 deg M 126.7444300209363 3.7377e-05 deg tp 2458500.902682133021 (2019-Jan-17.40268213) 0.00014795 TDB period 1419.03698965235 3.89 1.0151e-05 2.779e-08 d yr n .2536931754599269 1.8149e-09 deg/d Q 2.598085379852397 1.2391e-08 au   Orbit Determination Parameters    # obs. used (total)      928      data-arc span      14351 days (39.29 yr)      first obs. used      1980-03-16      last obs. used      2019-07-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55626      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 03:33:00   Additional Information  Earth MOID = 1.34881 au   Jupiter MOID = 2.36148 au   T_jup = 3.462  [ 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 15.4   n/a MPO432619   diameter diameter 2.598 km 0.421 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.218   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   109784 (2001 RV87)          Discovered 2001-Sep-11 by LONEOS at Anderson Mesa Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2001 RV87 = 1980 FW  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-08 20:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin