+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120936 (1998 SJ153) Classification: Main-belt Asteroid          SPK-ID: 2120936 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2443571755762299 3.8745e-08   a 2.997500518994579 1.6053e-08 au q 2.265039758384781 1.1482e-07 au i 2.336013268313606 4.437e-06 deg node 166.3138426398737 0.00011598 deg peri 154.1125936132979 0.00011637 deg M 98.36675817841774 1.1993e-05 deg tp 2458482.555548109636 (2018-Dec-30.05554811) 6.0753e-05 TDB period 1895.559090626222 5.19 1.5227e-05 4.169e-08 d yr n .189917582511801 1.5256e-09 deg/d Q 3.729961279604378 1.9976e-08 au   Orbit Determination Parameters    # obs. used (total)      614      data-arc span      7749 days (21.22 yr)      first obs. used      1998-09-12      last obs. used      2019-11-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58017      source      ORB      producer      Otto Matic      solution date      2019-Dec-14 10:02:52   Additional Information  Earth MOID = 1.25256 au   Jupiter MOID = 1.61006 au   T_jup = 3.207  [ 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 15.3   n/a MPO412814   diameter diameter 5.341 km 0.459 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.052   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   120936 (1998 SJ153)          Discovered 1998-Sep-26 by LINEAR at Socorro Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 [ show close-approach data ] Alternate Designations  1998 SJ153 = 2002 GK63  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-31 14:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin