+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227656 (2006 BC157) Classification: Main-belt Asteroid          SPK-ID: 2227656 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .04087680707069079 5.6121e-08   a 3.08926083131758 3.5244e-08 au q 2.962981712324769 1.7533e-07 au i 16.04277717785254 5.8074e-06 deg node 146.6091320381225 1.9014e-05 deg peri 219.3452863164565 6.5091e-05 deg M 56.79776712825422 6.1005e-05 deg tp 2458887.597483510581 (2020-Feb-08.09748351) 0.00033749 TDB period 1983.262927956817 5.43 3.3939e-05 9.292e-08 d yr n .1815190486976312 3.1063e-09 deg/d Q 3.215539950310391 3.6684e-08 au   Orbit Determination Parameters    # obs. used (total)      328      data-arc span      9500 days (26.01 yr)      first obs. used      1995-02-04      last obs. used      2021-02-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52568      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 00:40:38   Additional Information  Earth MOID = 1.96731 au   Jupiter MOID = 2.02327 au   T_jup = 3.164  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.3   n/a MPO450053   diameter diameter 5.647 km 0.205 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.038   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   227656 (2006 BC157)          Discovered 2006-Jan-25 by Spacewatch at Kitt Peak Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ show close-approach data ] Alternate Designations  2006 BC157 = 2003 SW150  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-22 01:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin