+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2021 BU1) Classification: Apollo [NEO]          SPK-ID: 54106536 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459231.5 (2021-Jan-17.0) TDB Reference: JPL 3 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5829177419541537 0.0012836   a 2.337551099839684 0.0071696 au q .9749510910186869 1.0155e-05 au i 5.985919257066715 0.0096828 deg node 118.6756650994102 0.00055957 deg peri 31.8044273808052 0.0052456 deg M 352.5038357672277 0.035827 deg tp 2459258.681704652730 (2021-Feb-13.18170465) 0.0048622 TDB period 1305.389446005226 3.57 6.0057 0.01644 d yr n .2757797690962478 0.0012688 deg/d Q 3.700151108660681 0.011349 au   Orbit Determination Parameters    # obs. used (total)      29      data-arc span      8 days      first obs. used      2021-01-15      last obs. used      2021-01-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      8      norm. resid. RMS      .46852      source      ORB      producer      Otto Matic      solution date      2021-Jan-27 06:47:50   Additional Information  Earth MOID = .024202 au   Jupiter MOID = 1.32271 au   T_jup = 3.309  [ 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 26.28   .21854 E2021-BD8 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-13 19:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin