+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   382165 (2012 HT63) Classification: Main-belt Asteroid          SPK-ID: 2382165 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3191902564705316 5.4152e-08   a 2.539820499209629 2.4813e-08 au q 1.729134542677794 1.4261e-07 au i 5.815871489368647 1.1442e-05 deg node 70.9985123285102 7.2064e-05 deg peri 259.4255439644087 8.4903e-05 deg M 335.5042581246196 5.7399e-05 deg tp 2459301.098396726590 (2021-Mar-27.59839673) 0.0002365 TDB period 1478.437477248686 4.05 2.1666e-05 5.932e-08 d yr n .2435003208048715 3.5683e-09 deg/d Q 3.350506455741464 3.2733e-08 au   Orbit Determination Parameters    # obs. used (total)      171      data-arc span      6732 days (18.43 yr)      first obs. used      2001-12-19      last obs. used      2020-05-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52587      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 17:44:33   Additional Information  Earth MOID = .728273 au   Jupiter MOID = 2.05458 au   T_jup = 3.366  [ hide covariance matrix ] Orbital Elements at Epoch 2457667.5 (2016-Oct-06.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3182734579109235 5.4217e-08   q 1.731466570736465 1.4265e-07 au tp 2457823.362266960825 (2017-Mar-10.86226696) 0.00022644 TDB node 71.00505720158492 7.2036e-05 deg peri 259.5253151921201 8.4944e-05 deg i 5.816222531227895 1.1444e-05 deg   Orbit Determination Parameters    # obs. used (total)      171      data-arc span      6732 days (18.43 yr)      first obs. used      2001-12-19      last obs. used      2020-05-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52587      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 17:44:33   Additional Information  Jupiter MOID = 2.05458 au   T_jup = 3.366  Orbit Covariance (6×6)   e q tp node peri i e 2.939531723068831E-15 -7.682103426685977E-15 -1.2149057946489E-14 1.551066376160534E-14 1.923632251056923E-13 5.706331045238364E-17 q -7.682103426685977E-15 2.034840879166939E-14 1.782015532246249E-12 -3.53058639760351E-14 -1.500323403794458E-13 6.348608153315716E-15 tp -1.2149057946489E-14 1.782015532246249E-12 5.127394869091598E-8 6.162759603319581E-10 1.025571853221981E-8 8.53767888056084E-11 node 1.551066376160534E-14 -3.53058639760351E-14 6.162759603319581E-10 5.189226886515716E-9 -5.032515117322493E-9 -5.908844298480981E-10 peri 1.923632251056923E-13 -1.500323403794458E-13 1.025571853221981E-8 -5.032515117322493E-9 7.215500083855024E-9 6.063327776448859E-10 i 5.706331045238364E-17 6.348608153315716E-15 8.53767888056084E-11 -5.908844298480981E-10 6.063327776448859E-10 1.309662848465797E-10 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.08   n/a E2021B25   382165 (2012 HT63)          Discovered 2005-Dec-31 by Spacewatch at Kitt Peak Reference: Last Updated: 2013-12-19 Alternate Designations  2012 HT63 = 2008 KG34  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-07 22:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin