+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (1999 RM45) Classification: Apollo [NEO, PHA]          SPK-ID: 3022036 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 68 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6440586301085319 8.6863e-08   a 1.681262900728212 1.0865e-08 au q .5984310200329029 1.4954e-07 au i 10.88953141990614 8.9327e-06 deg node 162.8360872067705 4.5404e-06 deg peri 88.77176802390679 1.7133e-05 deg M 303.7913928670624 3.7263e-07 deg tp 2459324.823204069426 (2021-Apr-20.32320407) 8.3951e-07 TDB period 796.2544483470538 2.18 7.7183e-06 2.113e-08 d yr n .4521167834570027 4.3825e-09 deg/d Q 2.76409478142352 1.7862e-08 au   Orbit Determination Parameters    # obs. used (total)      826      # delay obs. used      2      # Doppler obs. used      0      data-arc span      7840 days (21.46 yr)      first obs. used      1999-09-14      last obs. used      2021-03-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .2983      source      ORB      producer      Otto Matic      solution date      2021-Apr-07 06:59:09   Additional Information  Earth MOID = .00317413 au   Jupiter MOID = 2.38871 au   T_jup = 3.949  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 19.70   n/a E2021-DA1   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-13 16:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin