+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120938 (1998 SB162) Classification: Main-belt Asteroid          SPK-ID: 2120938 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1174530573388289 6.0903e-08   a 3.106265904843904 3.0163e-08 au q 2.741425477412624 1.8585e-07 au i 7.874240766391111 6.8789e-06 deg node 156.8097058692098 3.8694e-05 deg peri 201.0066716283881 4.5088e-05 deg M 3.05476580583055 2.34e-05 deg tp 2458983.531955621960 (2020-May-14.03195562) 0.00012991 TDB period 1999.660977098586 5.47 2.9126e-05 7.974e-08 d yr n .1800305172341479 2.6222e-09 deg/d Q 3.471106332275184 3.3706e-08 au   Orbit Determination Parameters    # obs. used (total)      391      data-arc span      8031 days (21.99 yr)      first obs. used      1998-09-26      last obs. used      2020-09-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60805      source      ORB      producer      Otto Matic      solution date      2020-Oct-22 20:15:48   Additional Information  Earth MOID = 1.73866 au   Jupiter MOID = 1.96902 au   T_jup = 3.195  [ 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 15.1   n/a MPO453680   diameter diameter 6.116 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.043   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   120938 (1998 SB162)          Discovered 1998-Sep-26 by LINEAR at Socorro Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 [ show close-approach data ] Alternate Designations  1998 SB162 = 2003 QJ7  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Nov-01 03:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin