+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   74633 (1999 RC48) Classification: Main-belt Asteroid          SPK-ID: 2074633 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1387762125527695 4.1469e-08   a 2.204830877097656 8.0177e-09 au q 1.898852798654643 8.9929e-08 au i 7.086738290868461 4.5208e-06 deg node 338.3539166206158 4.1712e-05 deg peri 6.761416439126013 4.5976e-05 deg M 106.4230361281643 1.9126e-05 deg tp 2458646.995868255856 (2019-Jun-12.49586826) 6.3408e-05 TDB period 1195.807712858634 3.27 6.5227e-06 1.786e-08 d yr n .3010517461368461 1.6421e-09 deg/d Q 2.51080895554067 9.1304e-09 au   Orbit Determination Parameters    # obs. used (total)      1023      data-arc span      10693 days (29.28 yr)      first obs. used      1991-01-07      last obs. used      2020-04-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48528      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:42:56   Additional Information  Earth MOID = .891394 au   Jupiter MOID = 2.87542 au   T_jup = 3.639  [ 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 15.5   n/a MPO502608   74633 (1999 RC48)          Discovered 1999-Sep-07 by LINEAR at Socorro Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-28 05:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin