+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15591 (2000 GP89) Classification: Main-belt Asteroid          SPK-ID: 2015591 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08634936333019254 3.3946e-08   a 3.12618422232649 1.6772e-08 au q 2.856240205075705 1.0544e-07 au i 13.37027602884047 3.6823e-06 deg node 60.10962237097244 1.5674e-05 deg peri 349.0855543031793 2.908e-05 deg M 59.28742052605558 2.2862e-05 deg tp 2458868.008664824840 (2020-Jan-19.50866482) 0.00012889 TDB period 2018.925424668346 5.53 1.6247e-05 4.448e-08 d yr n .178312678418589 1.4349e-09 deg/d Q 3.396128239577276 1.822e-08 au   Orbit Determination Parameters    # obs. used (total)      2333      data-arc span      20562 days (56.30 yr)      first obs. used      1964-11-27      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45423      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:03:31   Additional Information  Earth MOID = 1.86746 au   Jupiter MOID = 1.973 au   T_jup = 3.167  [ 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 12.61   n/a E2021B10   diameter diameter 7.655 km 0.135 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.330   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15591 (2000 GP89)          Discovered 2000-Apr-04 by LINEAR at Socorro Reference: 20000621/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  2000 GP89 = 1964 WW = 1975 WD2 = 1986 WT9  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-15 04:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin