+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   249032 (2007 TA) Classification: Jupiter Trojan          SPK-ID: 2249032 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0937186879787802 7.9924e-08   a 5.187308941735536 1.9889e-07 au q 4.701161153575487 5.3999e-07 au i 13.59741180371307 5.4202e-06 deg node 133.8396329512601 2.8689e-05 deg peri 269.5000713485804 4.446e-05 deg M 328.8836804243102 3.1253e-05 deg tp 2459373.490113488093 (2021-Jun-07.99011349) 0.00036636 TDB period 4315.306009410554 11.81 0.00024818 6.795e-07 d yr n .08342397948486947 4.7979e-09 deg/d Q 5.673456729895586 2.1753e-07 au   Orbit Determination Parameters    # obs. used (total)      402      data-arc span      7992 days (21.88 yr)      first obs. used      1998-12-22      last obs. used      2020-11-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49057      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:41:33   Additional Information  Earth MOID = 3.74499 au   Jupiter MOID = .050758 au   T_jup = 2.935  [ 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 12.7   n/a MPO454844   diameter diameter 10.776 km 0.725 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)   geometric albedo albedo 0.115   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)   249032 (2007 TA)          Discovered 2007-Oct-01 by Hug, G. at Eskridge Reference: 20100824/Numbers.arc Last Updated: 2010-08-27 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-28 00:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin