+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70502 (1999 TB97) Classification: Main-belt Asteroid          SPK-ID: 2070502 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1454875102238359 4.4537e-08   a 2.591347166771368 1.6488e-08 au q 2.214338519352211 1.2158e-07 au i 8.776991947999958 5.2363e-06 deg node 117.4410671075567 3.4829e-05 deg peri 224.2764675527726 4.1527e-05 deg M 5.967254831643092 2.5639e-05 deg tp 2458975.244329034697 (2020-May-05.74432903) 0.0001084 TDB period 1523.6556513886 4.17 1.4541e-05 3.981e-08 d yr n .2362738586451014 2.255e-09 deg/d Q 2.968355814190526 1.8886e-08 au   Orbit Determination Parameters    # obs. used (total)      549      data-arc span      8131 days (22.26 yr)      first obs. used      1998-04-24      last obs. used      2020-07-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55878      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 06:27:55   Additional Information  Earth MOID = 1.21464 au   Jupiter MOID = 2.41689 au   T_jup = 3.388  [ 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 15.3   n/a MPO493359   diameter diameter 5.219 km 0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.041   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70502 (1999 TB97)          Discovered 1999-Oct-02 by LINEAR at Socorro Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Sep-20 13:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin