+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58256 (1993 RL7) Classification: Main-belt Asteroid          SPK-ID: 2058256 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1724459226229733 3.2756e-08   a 3.11901631055628 1.6463e-08 au q 2.5811546652063 9.8921e-08 au i 1.050895350670351 3.8443e-06 deg node 159.6548362621566 0.00019233 deg peri 108.2477439213306 0.00019272 deg M 18.70396080485074 1.0806e-05 deg tp 2458895.966382805332 (2020-Feb-16.46638281) 6.0456e-05 TDB period 2011.985727660474 5.51 1.593e-05 4.361e-08 d yr n .1789277105949484 1.4167e-09 deg/d Q 3.656877955906261 1.9302e-08 au   Orbit Determination Parameters    # obs. used (total)      1261      data-arc span      10834 days (29.66 yr)      first obs. used      1991-03-12      last obs. used      2020-11-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52616      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 03:56:59   Additional Information  Earth MOID = 1.56539 au   Jupiter MOID = 1.4405 au   T_jup = 3.193  [ 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 14.5   n/a MPO351246   diameter diameter 6.347 km 0.403 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.084   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   58256 (1993 RL7)          Discovered 1993-Sep-15 by Elst, E. W. at La Silla Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1993 RL7 = 1999 VG56  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-21 21:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin