+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1314800180583124 4.5688e-08   a 3.220781382808139 1.8368e-08 au q 2.797312988434649 1.434e-07 au i 6.111338687696686 4.5976e-06 deg node 136.7925496339488 5.4195e-05 deg peri 28.24300272242673 5.8406e-05 deg M 50.86785327466378 2.0755e-05 deg tp 2458702.180799251743 (2019-Aug-06.68079925) 0.0001212 TDB period 2111.253087278673 5.78 1.8061e-05 4.945e-08 d yr n .1705148483472565 1.4587e-09 deg/d Q 3.644249777181629 2.0783e-08 au   Orbit Determination Parameters    # obs. used (total)      627      data-arc span      10612 days (29.05 yr)      first obs. used      1991-04-08      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57361      source      ORB      producer      Otto Matic      solution date      2020-May-21 01:31:09   Additional Information  Earth MOID = 1.80699 au   Jupiter MOID = 1.33983 au   T_jup = 3.167  [ 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 14.9   n/a MPO475381   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 ] 2020-Aug-08 07:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin