+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2021 BH2) Classification: Apollo [NEO]          SPK-ID: 54106572 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459233.5 (2021-Jan-19.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3220279686064591 0.0013876   a 1.183653821477137 0.0019961 au q .8024841858135825 0.00031075 au i 20.10029318403243 0.075424 deg node 300.3546325057891 0.0042232 deg peri 268.3954706356307 0.075825 deg M 307.3728116183199 0.21071 deg tp 2459302.261153146872 (2021-Mar-28.76115315) 0.10137 TDB period 470.3655257686342 1.29 1.1898 0.003257 d yr n .7653622135927509 0.001936 deg/d Q 1.564823457140692 0.0026389 au   Orbit Determination Parameters    # obs. used (total)      19      data-arc span      2 days      first obs. used      2021-01-18      last obs. used      2021-01-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      8      norm. resid. RMS      .43445      source      ORB      producer      Otto Matic      solution date      2021-Jan-20 09:12:02   Additional Information  Earth MOID = .0387387 au   Jupiter MOID = 3.54627 au   T_jup = 5.244  [ 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 25.80   .33009 E2021-BA4 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-12 13:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin