+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11403 (1999 BW) Classification: Main-belt Asteroid          SPK-ID: 2011403 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1204919658718946 3.6193e-08   a 2.609867312057183 9.8223e-09 au q 2.295399268962615 9.6508e-08 au i 2.068417130737813 3.3544e-06 deg node 76.27456998874368 0.0001049 deg peri 124.1098109293545 0.00010601 deg M 49.91595504054188 1.6251e-05 deg tp 2459182.968007299158 (2020-Nov-29.46800730) 6.9075e-05 TDB period 1540.018964074068 4.22 8.6939e-06 2.38e-08 d yr n .2337633551262461 1.3197e-09 deg/d Q 2.92433535515175 1.1006e-08 au   Orbit Determination Parameters    # obs. used (total)      1715      data-arc span      24943 days (68.29 yr)      first obs. used      1953-03-16      last obs. used      2021-06-30      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50467      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 02:42:00   Additional Information  Earth MOID = 1.29409 au   Jupiter MOID = 2.02977 au   T_jup = 3.399  [ 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 14.59   n/a MPCxxxxx   diameter diameter 6.908 km 1.816 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   geometric albedo albedo 0.060   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   11403 (1999 BW)          Discovered 1999-Jan-16 by Kagawa, T. at Gekko Reference: 19990831/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 BW = 1953 FZ = 1978 ER1 = 1997 SL33  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-25 13:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin