+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   118110 (2493 T-3) Classification: Main-belt Asteroid          SPK-ID: 2118110 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1183645806273754 3.5546e-08   a 2.405122440017658 9.3868e-09 au q 2.120441131047479 8.6137e-08 au i 6.875272068158178 5.0999e-06 deg node .8414027965125696 2.9613e-05 deg peri 39.20699218596535 3.9908e-05 deg M 137.2088361953348 2.5295e-05 deg tp 2458481.241287370714 (2018-Dec-28.74128737) 9.4745e-05 TDB period 1362.398674385803 3.73 7.9758e-06 2.184e-08 d yr n .2642398343218407 1.5469e-09 deg/d Q 2.689803748987838 1.0498e-08 au   Orbit Determination Parameters    # obs. used (total)      697      data-arc span      15542 days (42.55 yr)      first obs. used      1977-10-07      last obs. used      2020-04-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51711      source      ORB      producer      Otto Matic      solution date      2020-May-20 20:17:28   Additional Information  Earth MOID = 1.13239 au   Jupiter MOID = 2.71374 au   T_jup = 3.504  [ 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 16.2   n/a MPO459557   118110 (2493 T-3)          Discovered 1977-Oct-16 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2493 T-3 = 2003 SH122  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-21 11:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin