+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227658 (2006 BK172) Classification: Main-belt Asteroid          SPK-ID: 2227658 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07775301452000151 5.1072e-08   a 2.864893638400003 2.6851e-08 au q 2.642139521735228 1.5201e-07 au i 1.205571323368288 5.6971e-06 deg node 225.1007853532788 0.000256 deg peri 161.3726855899166 0.00025862 deg M 119.6539061590428 3.5548e-05 deg tp 2458611.811486933776 (2019-May-08.31148693) 0.00017492 TDB period 1771.173808752621 4.85 2.49e-05 6.817e-08 d yr n .203255038111441 2.8574e-09 deg/d Q 3.087647755064779 2.8938e-08 au   Orbit Determination Parameters    # obs. used (total)      273      data-arc span      7436 days (20.36 yr)      first obs. used      1999-10-06      last obs. used      2020-02-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53513      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 02:25:32   Additional Information  Earth MOID = 1.64494 au   Jupiter MOID = 2.28573 au   T_jup = 3.295  [ 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 16.43   n/a E2021B55   227658 (2006 BK172)          Discovered 2006-Jan-27 by Spacewatch at Kitt Peak Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-11 09:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin