+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102248 (1999 TD27) Classification: Main-belt Asteroid          SPK-ID: 2102248 [ 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 .2517570626775673 3.3381e-08   a 2.237079435804006 8.0085e-09 au q 1.6738788880696 7.2529e-08 au i 6.833634957128747 5.6591e-06 deg node 21.1849665897646 2.8031e-05 deg peri 281.8655198398858 3.0946e-05 deg M 179.9552125385103 1.4892e-05 deg tp 2458589.582641392842 (2019-Apr-16.08264139) 4.9144e-05 TDB period 1222.138808852296 3.35 6.5627e-06 1.797e-08 d yr n .2945655578502364 1.5818e-09 deg/d Q 2.800279983538413 1.0025e-08 au   Orbit Determination Parameters    # obs. used (total)      979      data-arc span      24961 days (68.34 yr)      first obs. used      1952-09-15      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45436      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:30:56   Additional Information  Earth MOID = .674039 au   Jupiter MOID = 2.48514 au   T_jup = 3.586  [ 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 15.8   n/a MPO502729   102248 (1999 TD27)          Discovered 1999-Oct-03 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-09 01:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin