+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   118336 (1999 BB7) Classification: Main-belt Asteroid          SPK-ID: 2118336 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1626431234044733 4.4411e-08   a 2.417340885927853 9.6505e-09 au q 2.02417701390721 1.1011e-07 au i 3.640012401695089 3.9541e-06 deg node 242.6175275566181 8.4395e-05 deg peri 238.5192128713093 8.5752e-05 deg M 237.8529102695881 1.5281e-05 deg tp 2459466.285426761434 (2021-Sep-08.78542676) 5.8633e-05 TDB period 1372.793686728068 3.76 8.2207e-06 2.251e-08 d yr n .262238968229835 1.5704e-09 deg/d Q 2.810504757948496 1.122e-08 au   Orbit Determination Parameters    # obs. used (total)      683      data-arc span      7948 days (21.76 yr)      first obs. used      1999-01-20      last obs. used      2020-10-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57359      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 18:12:15   Additional Information  Earth MOID = 1.04291 au   Jupiter MOID = 2.28155 au   T_jup = 3.495  [ 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 16.0   n/a MPO436568   diameter diameter 1.799 km 0.314 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.238   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   118336 (1999 BB7)          Discovered 1999-Jan-20 by Farra d'Isonzo at Farra d'Isonzo Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 Alternate Designations  1999 BB7 = 2001 SL118  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Nov-25 06:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin