+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15585 (2000 GR74) Classification: Main-belt Asteroid          SPK-ID: 2015585 [ 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 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2399980342067803 9.3514e-09   a 2.314521768231118 7.3158e-09 au q 1.759041093726849 2.07e-08 au i 9.060529027871432 1.0326e-06 deg node 36.61194046257054 3.6185e-06 deg peri 285.1235565059007 6.968e-06 deg M 232.4248895393809 5.5912e-06 deg tp 2459656.278446400784 (2022-Mar-17.77844640) 2.1127e-05 TDB period 1286.146177823078 3.52 6.0979e-06 1.67e-08 d yr n .2799059750807901 1.3271e-09 deg/d Q 2.870002442735388 9.0716e-09 au   Orbit Determination Parameters    # obs. used (total)      1962      data-arc span      13700 days (37.51 yr)      first obs. used      1983-09-11      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52401      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:03:23   Additional Information  Earth MOID = .772014 au   Jupiter MOID = 2.5238 au   T_jup = 3.527  [ 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 14.25   n/a E2021B10   diameter diameter 3.810 km 0.289 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.306   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15585 (2000 GR74)          Discovered 2000-Apr-05 by LINEAR at Socorro Reference: 20000621/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  2000 GR74 = 1983 RK4 = 1999 CY18  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 11:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin