+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102494 (1999 TQ273) Classification: Main-belt Asteroid          SPK-ID: 2102494 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1721263957887597 5.1294e-08   a 2.665962040653945 1.6857e-08 au q 2.207079603286535 1.4164e-07 au i 13.80025282402979 4.9788e-06 deg node 262.7663751050708 2.3147e-05 deg peri 100.7745552145429 2.7886e-05 deg M 325.8542113394271 1.7173e-05 deg tp 2459351.304401097338 (2021-May-16.80440110) 7.6701e-05 TDB period 1589.93499710048 4.35 1.508e-05 4.129e-08 d yr n .2264243510939264 2.1475e-09 deg/d Q 3.124844478021356 1.9758e-08 au   Orbit Determination Parameters    # obs. used (total)      678      data-arc span      7620 days (20.86 yr)      first obs. used      1999-09-08      last obs. used      2020-07-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53587      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:54:26   Additional Information  Earth MOID = 1.25391 au   Jupiter MOID = 2.52893 au   T_jup = 3.321  [ 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 14.7   n/a MPO385433   102494 (1999 TQ273)          Discovered 1999-Oct-05 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-04 19:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin