+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101207 (1998 SB47) Classification: Main-belt Asteroid          SPK-ID: 2101207 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0570471250512579 4.1389e-08   a 2.741500261352197 1.4609e-08 au q 2.585105553114782 1.2014e-07 au i 5.580328036662538 3.8871e-06 deg node 201.9854206791706 4.4482e-05 deg peri 178.8875421269934 6.0141e-05 deg M 326.6347315165489 4.1059e-05 deg tp 2459354.164301944613 (2021-May-19.66430194) 0.00018947 TDB period 1657.986020028535 4.54 1.3252e-05 3.628e-08 d yr n .2171309019805873 1.7355e-09 deg/d Q 2.897894969589612 1.5442e-08 au   Orbit Determination Parameters    # obs. used (total)      743      data-arc span      8110 days (22.20 yr)      first obs. used      1998-09-25      last obs. used      2020-12-08      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .57227      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:35:43   Additional Information  Earth MOID = 1.58601 au   Jupiter MOID = 2.3711 au   T_jup = 3.340  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.35   n/a E2021B55   101207 (1998 SB47)          Discovered 1998-Sep-25 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-23 03:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin