+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   183469 (2003 BF81) Classification: Main-belt Asteroid          SPK-ID: 2183469 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2205235184935319 5.3694e-08   a 2.594408275699579 1.6784e-08 au q 2.022280234333571 1.4677e-07 au i 2.429712389968097 3.6121e-06 deg node 91.05929357361076 0.00013496 deg peri 308.6256334964615 0.0001356 deg M 111.9089988653772 1.4316e-05 deg tp 2458526.019445941898 (2019-Feb-11.51944594) 5.7618e-05 TDB period 1526.356246528477 4.18 1.4812e-05 4.055e-08 d yr n .2358558172895605 2.2888e-09 deg/d Q 3.166536317065587 2.0486e-08 au   Orbit Determination Parameters    # obs. used (total)      518      data-arc span      9159 days (25.08 yr)      first obs. used      1995-02-25      last obs. used      2020-03-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55001      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 08:35:00   Additional Information  Earth MOID = 1.03138 au   Jupiter MOID = 2.25285 au   T_jup = 3.382  [ 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 16.3   n/a MPO412995   diameter diameter 3.144 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.059   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   183469 (2003 BF81)          Discovered 2003-Jan-31 by LINEAR at Socorro Reference: 20080420/Numbers.arc Last Updated: 2008-04-23 [ show close-approach data ] Alternate Designations  2003 BF81 = 2004 HP21  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-18 15:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin