+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100516 (1997 BA) Classification: Main-belt Asteroid          SPK-ID: 2100516 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2117704316593307 4.1048e-08   a 2.563558931044563 1.6286e-08 au q 2.020672949633123 1.0087e-07 au i 13.30415486084186 5.326e-06 deg node 118.057390830022 2.1984e-05 deg peri 45.02440164268366 2.773e-05 deg M 229.2123330313601 2.017e-05 deg tp 2459545.162753205104 (2021-Nov-26.66275321) 8.7513e-05 TDB period 1499.213157467309 4.10 1.4287e-05 3.912e-08 d yr n .2401259608794822 2.2883e-09 deg/d Q 3.106444912456003 1.9735e-08 au   Orbit Determination Parameters    # obs. used (total)      571      data-arc span      8292 days (22.70 yr)      first obs. used      1997-01-11      last obs. used      2019-09-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53617      source      ORB      producer      Otto Matic      solution date      2019-Nov-07 11:54:33   Additional Information  Earth MOID = 1.05282 au   Jupiter MOID = 1.96026 au   T_jup = 3.365  [ 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 15.2   n/a MPO348128   diameter diameter 4.949 km 0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.095   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100516 (1997 BA)          Discovered 1997-Jan-16 by Kobayashi, T. at Oizumi Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1997 BA = 2000 YT61  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-26 19:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin