+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   233951 (2009 XJ) Classification: Main-belt Asteroid          SPK-ID: 2233951 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1278927875685925 5.2287e-08   a 3.084856655623298 3.4336e-08 au q 2.690325738686109 1.6579e-07 au i 4.242672449056412 4.7514e-06 deg node 80.48027286942468 8.1864e-05 deg peri 45.44100537694835 8.4882e-05 deg M 293.052175626691 2.2457e-05 deg tp 2459368.531402679829 (2021-Jun-03.03140268) 0.000126 TDB period 1979.02330964411 5.42 3.3042e-05 9.046e-08 d yr n .1819079129819543 3.0371e-09 deg/d Q 3.479387572560487 3.8728e-08 au   Orbit Determination Parameters    # obs. used (total)      322      data-arc span      7621 days (20.87 yr)      first obs. used      1998-12-15      last obs. used      2019-10-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56396      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 01:38:16   Additional Information  Earth MOID = 1.70791 au   Jupiter MOID = 1.59278 au   T_jup = 3.210  [ 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 15.9   n/a MPO413119   diameter diameter 3.404 km 0.993 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.067   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   233951 (2009 XJ)          Discovered 2009-Dec-07 by Ferrando, R. at Pla D'Arguines Reference: 20100228/Numbers.arc Last Updated: 2010-03-03 [ show close-approach data ] Alternate Designations  2009 XJ = 2005 BS5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-07 11:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin