+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160202 (2002 BG20) Classification: Outer Main-belt Asteroid          SPK-ID: 2160202 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1314203563103832 4.1951e-08   a 3.222095826144574 1.7936e-08 au q 2.798646844606455 1.2924e-07 au i 6.111660019427477 3.8772e-06 deg node 136.7862124129949 5.3464e-05 deg peri 28.44156312986853 5.7763e-05 deg M 84.78518051791734 2.0749e-05 deg tp 2458702.965095796377 (2019-Aug-07.46509580) 0.00012087 TDB period 2112.545664456691 5.78 1.7639e-05 4.829e-08 d yr n .1704105175367111 1.4229e-09 deg/d Q 3.645544807682692 2.0293e-08 au   Orbit Determination Parameters    # obs. used (total)      723      data-arc span      10724 days (29.36 yr)      first obs. used      1991-04-08      last obs. used      2020-08-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5524      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 12:29:56   Additional Information  Earth MOID = 1.80802 au   Jupiter MOID = 1.3375 au   T_jup = 3.166  [ 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 14.95   n/a E2021B55   diameter diameter 5.643 km 2.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.061   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   160202 (2002 BG20)          Discovered 2002-Jan-22 by NEAT at Palomar Reference: 20070730/Numbers.arc Last Updated: 2007-08-06 [ show close-approach data ] Alternate Designations  2002 BG20 = 1996 AA9  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-13 18:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin