+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1207307263162704 4.4058e-08   a 2.610417731833202 1.1789e-08 au q 2.295260103080108 1.1998e-07 au i 2.068419492058749 3.3826e-06 deg node 76.27749848229224 0.00011036 deg peri 124.0317690265008 0.00011157 deg M 317.4180026129101 1.8584e-05 deg tp 2459182.716194060143 (2020-Nov-29.21619406) 8.0185e-05 TDB period 1540.50617366154 4.22 1.0436e-05 2.857e-08 d yr n .2336894237459217 1.5831e-09 deg/d Q 2.925575360586296 1.3212e-08 au   Orbit Determination Parameters    # obs. used (total)      1598      data-arc span      24512 days (67.11 yr)      first obs. used      1953-03-16      last obs. used      2020-04-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51625      source      ORB      producer      Otto Matic      solution date      2020-May-20 03:32:36   Additional Information  Earth MOID = 1.29326 au   Jupiter MOID = 2.03062 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 14.6   n/a MPO365387   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 ] 2020-Oct-21 02:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin