+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2443535566461501 3.8707e-08   a 2.997996040480095 1.603e-08 au q 2.265425045177709 1.1468e-07 au i 2.33616133043044 4.2052e-06 deg node 166.3035825467805 0.00011226 deg peri 154.1689179928609 0.00011262 deg M 136.2828891465436 1.2025e-05 deg tp 2458482.732416579584 (2018-Dec-30.23241658) 5.9825e-05 TDB period 1896.029146795521 5.19 1.5207e-05 4.163e-08 d yr n .1898704988836464 1.5228e-09 deg/d Q 3.730567035782482 1.9947e-08 au   Orbit Determination Parameters    # obs. used (total)      652      data-arc span      8164 days (22.35 yr)      first obs. used      1998-09-12      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57955      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 09:26:15   Additional Information  Earth MOID = 1.25098 au   Jupiter MOID = 1.6097 au   T_jup = 3.206  [ 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 ] 2021-Mar-07 07:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin