+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   243467 (2009 SE124) Classification: Main-belt Asteroid          SPK-ID: 2243467 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2518858512281946 5.4276e-08   a 3.149757737164919 3.7269e-08 au q 2.356378328376541 1.7998e-07 au i 8.924559800793181 1.0148e-05 deg node 223.2668176212346 4.0085e-05 deg peri 95.22968079473446 4.5221e-05 deg M 3.891497636611414 2.2485e-05 deg tp 2458978.428674061150 (2020-May-08.92867406) 0.00012731 TDB period 2041.804487617469 5.59 3.6239e-05 9.922e-08 d yr n .1763146286450154 3.1293e-09 deg/d Q 3.943137145953297 4.6656e-08 au   Orbit Determination Parameters    # obs. used (total)      164      data-arc span      7897 days (21.62 yr)      first obs. used      1998-10-20      last obs. used      2020-06-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62414      source      ORB      producer      Otto Matic      solution date      2020-Jun-24 04:34:59   Additional Information  Earth MOID = 1.36448 au   Jupiter MOID = 1.56719 au   T_jup = 3.140  [ 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 15.7   n/a MPO440239   diameter diameter 3.819 km 0.646 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.058   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   243467 (2009 SE124)          Discovered 2009-Sep-18 by Spacewatch at Kitt Peak Reference: 20100626/Numbers.arc Last Updated: 2010-06-28 [ show close-approach data ] Alternate Designations  2009 SE124 = 2003 OU18  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-04 16:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin