+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   64637 (2001 XM51) Classification: Main-belt Asteroid          SPK-ID: 2064637 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09580575646054605 4.7231e-08   a 3.021998957076044 2.7675e-08 au q 2.732474060970393 1.4544e-07 au i 12.35389993651426 5.717e-06 deg node 75.1317781734615 2.6346e-05 deg peri 162.9139532987207 4.2685e-05 deg M 56.5852199502643 3.134e-05 deg tp 2458898.893706430787 (2020-Feb-19.39370643) 0.00016751 TDB period 1918.844987796313 5.25 2.6358e-05 7.216e-08 d yr n .1876128620548135 2.5772e-09 deg/d Q 3.311523853181696 3.0326e-08 au   Orbit Determination Parameters    # obs. used (total)      556      data-arc span      8919 days (24.42 yr)      first obs. used      1996-01-20      last obs. used      2020-06-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60885      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:25:21   Additional Information  Earth MOID = 1.72067 au   Jupiter MOID = 1.71828 au   T_jup = 3.204  [ 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 14.55   n/a E2020-QM9   diameter diameter 4.346 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.085   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   64637 (2001 XM51)          Discovered 2001-Dec-10 by LINEAR at Socorro Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  2001 XM51 = 2000 SY344  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-02 18:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin