+ 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 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08647603336293848 3.2755e-08   a 3.126182957376202 1.6574e-08 au q 2.855843055655487 1.0098e-07 au i 13.36978966762205 3.4281e-06 deg node 60.10128580184035 1.561e-05 deg peri 349.0733337798525 2.8989e-05 deg M 94.24218987170636 2.2746e-05 deg tp 2458867.978228538826 (2020-Jan-19.47822854) 0.00012862 TDB period 2018.924199289486 5.53 1.6056e-05 4.396e-08 d yr n .1783127866448348 1.4181e-09 deg/d Q 3.396522859096916 1.8008e-08 au   Orbit Determination Parameters    # obs. used (total)      2498      data-arc span      20666 days (56.58 yr)      first obs. used      1964-11-27      last obs. used      2021-06-27      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .4461      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 03:52:36   Additional Information  Earth MOID = 1.86741 au   Jupiter MOID = 1.97367 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 12.62   n/a MPCxxxxx   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-Aug-04 05:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin