+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70028 (1999 BM17) Classification: Main-belt Asteroid          SPK-ID: 2070028 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .112661732040459 4.1017e-08   a 3.163110209548326 2.5088e-08 au q 2.806748734705752 1.3614e-07 au i 13.11360457679551 5.6133e-06 deg node 13.98171483975454 1.8696e-05 deg peri 40.56490239685063 3.1922e-05 deg M 324.6197240308222 2.6225e-05 deg tp 2459202.442918352335 (2020-Dec-18.94291835) 0.0001507 TDB period 2054.801683010447 5.63 2.4446e-05 6.693e-08 d yr n .175199389301926 2.0844e-09 deg/d Q 3.5194716843909 2.7915e-08 au   Orbit Determination Parameters    # obs. used (total)      817      data-arc span      10165 days (27.83 yr)      first obs. used      1992-10-02      last obs. used      2020-08-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55019      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 06:25:19   Additional Information  Earth MOID = 1.83055 au   Jupiter MOID = 1.99661 au   T_jup = 3.154  [ 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 13.9   n/a MPO453103   diameter diameter 4.997 km 0.273 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.234   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70028 (1999 BM17)          Discovered 1999-Jan-16 by LINEAR at Socorro Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 BM17 = 2000 GW158  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-30 00:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin