+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2010 RA91) Classification: Apollo [NEO]          SPK-ID: 3546367 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3490725023692341 7.7178e-05   a 1.166818537904455 6.8114e-05 au q .7595142710673362 4.5727e-05 au i 5.613914717950895 0.0014154 deg node 183.6022157359418 0.00044438 deg peri 272.7144418446766 0.001185 deg M 344.6593342217957 0.25778 deg tp 2459220.117565661227 (2021-Jan-05.61756566) 0.33136 TDB period 460.3661757676589 1.26 0.040311 0.0001104 d yr n .7819862078261968 6.8474e-05 deg/d Q 1.574122804741575 9.1891e-05 au   Orbit Determination Parameters    # obs. used (total)      104      data-arc span      31 days      first obs. used      2010-09-03      last obs. used      2010-10-04      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      6      norm. resid. RMS      .58592      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 04:08:59   Additional Information  Earth MOID = .00298376 au   Jupiter MOID = 3.60959 au   T_jup = 5.343  [ 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 23.48   n/a E2020R03   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-18 07:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin