+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   146362 (2001 PR13) Classification: Main-belt Asteroid          SPK-ID: 2146362 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08783528010491047 4.5168e-08   a 2.658854795046067 1.5312e-08 au q 2.425313539364912 1.2032e-07 au i 2.329328323371236 3.9512e-06 deg node 263.9934956241376 0.00012 deg peri 87.59288084576605 0.0001223 deg M 142.6335273027212 2.4382e-05 deg tp 2458573.078381072820 (2019-Mar-30.57838107) 0.00010535 TDB period 1583.581273527654 4.34 1.368e-05 3.745e-08 d yr n .2273328221405704 1.9638e-09 deg/d Q 2.892396050727223 1.6657e-08 au   Orbit Determination Parameters    # obs. used (total)      467      data-arc span      8102 days (22.18 yr)      first obs. used      1999-01-13      last obs. used      2021-03-20      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5758      source      ORB      producer      Otto Matic      solution date      2021-May-04 09:34:34   Additional Information  Earth MOID = 1.41905 au   Jupiter MOID = 2.4622 au   T_jup = 3.380  [ hide covariance matrix ] Orbital Elements at Epoch 2457174.5 (2015-Jun-01.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08896333145777156 4.5622e-08   q 2.421224060142817 1.2176e-07 au tp 2456983.784138059803 (2014-Nov-22.28413806) 9.9009e-05 TDB node 264.2107885339202 0.00012028 deg peri 86.06600532005933 0.00012245 deg i 2.325984062200335 3.9499e-06 deg   Orbit Determination Parameters    # obs. used (total)      467      data-arc span      8102 days (22.18 yr)      first obs. used      1999-01-13      last obs. used      2021-03-20      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5758      source      ORB      producer      Otto Matic      solution date      2021-May-04 09:34:34   Additional Information  Jupiter MOID = 2.4622 au   T_jup = 3.380  Orbit Covariance (6×6)   e q tp node peri i e 2.081411686304588E-15 -5.518464404031751E-15 -4.641256214774949E-13 1.450208937831071E-15 -1.52619969308211E-13 -5.056677846331434E-16 q -5.518464404031751E-15 1.482529410893827E-14 1.545030297905765E-12 -3.198932587426944E-15 4.785853939894956E-13 1.519955185277061E-15 tp -4.641256214774949E-13 1.545030297905765E-12 9.802744046380481E-9 -6.172717734773351E-12 2.300569871245857E-9 6.735822665066124E-13 node 1.450208937831071E-15 -3.198932587426944E-15 -6.172717734773351E-12 1.446798945373566E-8 -1.445726410234553E-8 6.58444776810141E-11 peri -1.52619969308211E-13 4.785853939894956E-13 2.300569871245857E-9 -1.445726410234553E-8 1.499402580050272E-8 -6.563023809784186E-11 i -5.056677846331434E-16 1.519955185277061E-15 6.735822665066124E-13 6.58444776810141E-11 -6.563023809784186E-11 1.560148490914371E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.11   n/a E2021B55   diameter diameter 2.286 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.135   0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   146362 (2001 PR13)          Discovered 2001-Aug-13 by Farra d'Isonzo at Farra d'Isonzo Reference: 20070106/Numbers.arc Last Updated: 2007-01-09 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-May-13 14:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin