+ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06935610194267706 4.1033e-08   a 2.318695403684209 1.0911e-08 au q 2.15787972889227 9.6053e-08 au i 8.128512919319931 4.4157e-06 deg node 98.82221494809259 2.9477e-05 deg peri 133.8388506023711 4.2974e-05 deg M 244.6206290161387 3.3529e-05 deg tp 2459413.823068350332 (2021-Jul-18.32306835) 0.0001215 TDB period 1289.62658868137 3.53 9.1029e-06 2.492e-08 d yr n .2791505720800129 1.9704e-09 deg/d Q 2.479511078476148 1.1668e-08 au   Orbit Determination Parameters    # obs. used (total)      643      data-arc span      7229 days (19.79 yr)      first obs. used      2000-04-30      last obs. used      2020-02-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56744      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:55:33   Additional Information  Earth MOID = 1.15381 au   Jupiter MOID = 2.52822 au   T_jup = 3.563  [ hide covariance matrix ] Orbital Elements at Epoch 2457073.5 (2015-Feb-20.0) TDB Reference: JPL 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06951745926507331 4.0988e-08   q 2.157413120291527 9.5939e-08 au tp 2456836.346060587627 (2014-Jun-27.84606059) 0.00011374 TDB node 98.86264991778179 2.9492e-05 deg peri 134.2258889538938 4.2961e-05 deg i 8.126710075276675 4.4143e-06 deg   Orbit Determination Parameters    # obs. used (total)      643      data-arc span      7229 days (19.79 yr)      first obs. used      2000-04-30      last obs. used      2020-02-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56744      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:55:33   Additional Information  Jupiter MOID = 2.52822 au   T_jup = 3.563  Orbit Covariance (6×6)   e q tp node peri i e 1.679991138222968E-15 -3.910392707847036E-15 7.109799100621994E-14 -1.031622464190481E-16 3.36228691450943E-14 3.199102583532567E-17 q -3.910392707847036E-15 9.204324495376793E-15 2.409277616237269E-13 -6.436217204481351E-16 3.661008131994977E-14 2.275273789338111E-16 tp 7.109799100621994E-14 2.409277616237269E-13 1.293660975564243E-8 -2.272351588950217E-12 3.568848365940572E-9 4.451342540011597E-12 node -1.031622464190481E-16 -6.436217204481351E-16 -2.272351588950217E-12 8.69787497158965E-10 -8.611983469483779E-10 -2.220929343838284E-11 peri 3.36228691450943E-14 3.661008131994977E-14 3.568848365940572E-9 -8.611983469483779E-10 1.845614055290097E-9 2.317011096615075E-11 i 3.199102583532567E-17 2.275273789338111E-16 4.451342540011597E-12 -2.220929343838284E-11 2.317011096615075E-11 1.948597969592297E-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 ] 2021-Jan-22 08:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin