+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2009 BH2) Classification: Aten [NEO]          SPK-ID: 3444370 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4757663193435062 3.4066e-06   a .8142195256264781 1.5691e-08 au q .426841298781553 2.7655e-06 au i 23.19184297726695 0.00026168 deg node 117.0994094775375 2.3827e-05 deg peri 220.9866784489958 2.0344e-05 deg M 175.9220860345689 0.0004658 deg tp 2459069.361998291518 (2020-Aug-07.86199829) 0.00034344 TDB period 268.3556208273739 0.73 7.7575e-06 2.124e-08 d yr n 1.341503482915972 3.878e-08 deg/d Q 1.201597752471403 2.3157e-08 au   Orbit Determination Parameters    # obs. used (total)      162      data-arc span      4027 days (11.03 yr)      first obs. used      2009-01-17      last obs. used      2020-01-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .38195      source      ORB      producer      Otto Matic      solution date      2020-Jan-29 08:34:08   Additional Information  Earth MOID = .000577694 au   Jupiter MOID = 4.19495 au   T_jup = 7.030  [ 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 22.5   n/a MPO535968   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-13 23:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin