+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1205607638389147 4.4062e-08   a 2.609902390577065 1.1763e-08 au q 2.295250564824085 1.1997e-07 au i 2.068440130689038 3.3775e-06 deg node 76.27456741750099 0.00011034 deg peri 124.0624048420553 0.00011156 deg M 4.133623032885575 1.8766e-05 deg tp 2459182.816704988705 (2020-Nov-29.31670499) 8.0215e-05 TDB period 1540.050012645267 4.22 1.0411e-05 2.85e-08 d yr n .2337586422804841 1.5803e-09 deg/d Q 2.924554216330046 1.3181e-08 au   Orbit Determination Parameters    # obs. used (total)      1606      data-arc span      24538 days (67.18 yr)      first obs. used      1953-03-16      last obs. used      2020-05-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51567      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:59:47   Additional Information  Earth MOID = 1.29244 au   Jupiter MOID = 2.03054 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 14.58   n/a E2021B10   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-Apr-12 13:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin