+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   187631 (2007 BS63) Classification: Main-belt Asteroid          SPK-ID: 2187631 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0464328299341381 4.9113e-08   a 2.698119167804813 2.0627e-08 au q 2.572837859344094 1.3705e-07 au i 6.978980958643217 5.4958e-06 deg node 153.1421247975348 4.4447e-05 deg peri 175.843162596948 7.747e-05 deg M 205.7542656071819 6.448e-05 deg tp 2459894.086736621941 (2022-Nov-10.58673662) 0.00029002 TDB period 1618.788527065581 4.43 1.8563e-05 5.082e-08 d yr n .222388529434775 2.5502e-09 deg/d Q 2.823400476265532 2.1584e-08 au   Orbit Determination Parameters    # obs. used (total)      297      data-arc span      7490 days (20.51 yr)      first obs. used      2000-09-03      last obs. used      2021-03-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .58184      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 21:56:12   Additional Information  Earth MOID = 1.55964 au   Jupiter MOID = 2.34815 au   T_jup = 3.356  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.44   n/a E2021B55   187631 (2007 BS63)          Discovered 2007-Jan-27 by Mt. Lemmon Survey at Mount Lemmon Reference: 20080520/Numbers.arc Last Updated: 2008-05-22 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 17:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin