+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102385 (1999 TQ152) Classification: Main-belt Asteroid          SPK-ID: 2102385 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ 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 .2449393905973789 4.8112e-08   a 2.630076628514898 1.0377e-08 au q 1.98586726190205 1.2989e-07 au i 5.636014757798597 4.8318e-06 deg node 178.0355490936882 3.953e-05 deg peri 194.7267858229817 4.0491e-05 deg M 356.4733843881464 8.0347e-06 deg tp 2459215.761831519350 (2021-Jan-01.26183152) 3.4794e-05 TDB period 1557.941083371488 4.27 9.2207e-06 2.524e-08 d yr n .2310742067478805 1.3676e-09 deg/d Q 3.274285995127746 1.2919e-08 au   Orbit Determination Parameters    # obs. used (total)      683      data-arc span      8243 days (22.57 yr)      first obs. used      1998-06-19      last obs. used      2021-01-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51192      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:41:43   Additional Information  Earth MOID = .985251 au   Jupiter MOID = 2.18988 au   T_jup = 3.350  [ 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 15.98   n/a E2021B55   102385 (1999 TQ152)          Discovered 1999-Oct-07 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2159-Oct-25 09:46 00:18 Cybel 0.0305460383121196 0.030535453035124 0.0305566237654661 2.7489435417673 2.74894346932449 2509915.906696053 18.0375527326737 540.132554838886 61.9067675420244 12.5599716749365 18031.3367985815 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 15:41:45 2021-Apr-13 15:41 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-23 04:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin