+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2021 BM) Classification: Apollo [NEO]          SPK-ID: 54106296 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .180920805969338 0.0001132   a 1.191021537655318 0.00015336 au q .9755409611358775 9.2135e-06 au i 1.264305413106762 0.00074673 deg node 181.1577278368117 0.00055478 deg peri 337.9672916158881 0.0028795 deg M 305.4621249955369 0.0089785 deg tp 2459272.423955044401 (2021-Feb-26.92395504) 0.0020538 TDB period 474.7640756788803 1.30 0.091697 0.0002511 d yr n .7582713571687675 0.00014645 deg/d Q 1.406502114174758 0.0001811 au   Orbit Determination Parameters    # obs. used (total)      72      data-arc span      26 days      first obs. used      2021-01-16      last obs. used      2021-02-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      6      norm. resid. RMS      .35639      source      ORB      producer      Otto Matic      solution date      2021-Feb-11 05:25:35   Additional Information  Earth MOID = .00396372 au   Jupiter MOID = 3.56912 au   T_jup = 5.310  [ 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 25.2   .34159 E2021D54 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-14 19:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin