+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   86949 (2000 HE87) Classification: Main-belt Asteroid          SPK-ID: 2086949 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06935610142576779 4.1038e-08   a 2.318695403480691 1.0916e-08 au q 2.157879729901423 9.6059e-08 au i 8.12851297754135 4.4158e-06 deg node 98.82221566296167 2.9535e-05 deg peri 133.8388501374125 4.3029e-05 deg M 244.6206288907727 3.3544e-05 deg tp 2459413.823068745012 (2021-Jul-18.32306874) 0.00012154 TDB period 1289.626588511579 3.53 9.1067e-06 2.493e-08 d yr n .2791505721167656 1.9712e-09 deg/d Q 2.479511077059959 1.1673e-08 au   Orbit Determination Parameters    # obs. used (total)      639      data-arc span      7185 days (19.67 yr)      first obs. used      2000-04-30      last obs. used      2020-01-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56868      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 20:57:42   Additional Information  Earth MOID = 1.15381 au   Jupiter MOID = 2.52822 au   T_jup = 3.563  [ hide covariance matrix ] Orbital Elements at Epoch 2457066.5 (2015-Feb-13.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06951421187600425 4.0992e-08   q 2.157418607894928 9.5944e-08 au tp 2456836.346522331006 (2014-Jun-27.84652233) 0.00011381 TDB node 98.86270326745958 2.9549e-05 deg peri 134.2262349522517 4.3017e-05 deg i 8.126724768783934 4.4145e-06 deg   Orbit Determination Parameters    # obs. used (total)      639      data-arc span      7185 days (19.67 yr)      first obs. used      2000-04-30      last obs. used      2020-01-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56868      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 20:57:42   Additional Information  Jupiter MOID = 2.52822 au   T_jup = 3.563  Orbit Covariance (6×6)   e q tp node peri i e 1.680333734021109E-15 -3.910976832734541E-15 6.889505434658025E-14 3.205306794462865E-17 3.281080611237214E-14 3.481553196399588E-17 q -3.910976832734541E-15 9.205274465105711E-15 2.448329827849321E-13 -9.394507477500979E-16 3.810907607834453E-14 2.21727985801505E-16 tp 6.889505434658025E-14 2.448329827849321E-13 1.295333467641005E-8 -2.137208369049259E-12 3.573838014746184E-9 4.454374881615843E-12 node 3.205306794462865E-17 -9.394507477500979E-16 -2.137208369049259E-12 8.731685148113558E-10 -8.645086520657805E-10 -2.214260609553326E-11 peri 3.281080611237214E-14 3.810907607834453E-14 3.573838014746184E-9 -8.645086520657805E-10 1.850425266780883E-9 2.310492482783753E-11 i 3.481553196399588E-17 2.21727985801505E-16 4.454374881615843E-12 -2.214260609553326E-11 2.310492482783753E-11 1.948739378024648E-11 [ 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 16.0   n/a MPO412687   86949 (2000 HE87)          Discovered 2000-Apr-30 by Spacewatch at Kitt Peak Reference: 20040830/Numbers.arc Last Updated: 2004-09-06 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-27 15:47 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin