+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 BU1) Classification: Apollo [NEO]          SPK-ID: 3797752 [ 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 .4623274171362267 1.9074e-07   a 1.593328518962716 1.8547e-08 au q .8566890601411941 3.0111e-07 au i 6.378759834669514 2.7295e-05 deg node 302.9923250087802 1.0237e-05 deg peri 238.027487292934 6.004e-05 deg M 137.754136019308 2.3873e-05 deg tp 2458919.401474310109 (2020-Mar-10.90147431) 4.4702e-05 TDB period 734.6092986578407 2.01 1.2826e-05 3.512e-08 d yr n .4900564159175956 8.5565e-09 deg/d Q 2.329967977784237 2.7121e-08 au   Orbit Determination Parameters    # obs. used (total)      109      data-arc span      745 days (2.04 yr)      first obs. used      2018-01-09      last obs. used      2020-01-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42007      source      ORB      producer      Otto Matic      solution date      2020-Jan-25 05:41:59   Additional Information  Earth MOID = .00731201 au   Jupiter MOID = 2.65825 au   T_jup = 4.241  [ 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 24.6   n/a MPO545073   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-13 18:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin