+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227320 (2005 TD97) Classification: Main-belt Asteroid          SPK-ID: 2227320 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1532040952002766 7.5397e-08   a 2.431436637633594 1.5557e-08 au q 2.058930587528137 1.867e-07 au i 1.340157958498499 6.3151e-06 deg node 289.2733680964974 0.00032678 deg peri 206.5158513104656 0.0003276 deg M 271.2767572966923 2.3094e-05 deg tp 2459541.793303503375 (2021-Nov-23.29330350) 8.9894e-05 TDB period 1384.818515618056 3.79 1.3291e-05 3.639e-08 d yr n .2599618621067678 2.495e-09 deg/d Q 2.803942687739052 1.7941e-08 au   Orbit Determination Parameters    # obs. used (total)      220      data-arc span      6546 days (17.92 yr)      first obs. used      2003-02-03      last obs. used      2021-01-05      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .58101      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 00:39:18   Additional Information  Earth MOID = 1.07284 au   Jupiter MOID = 2.22855 au   T_jup = 3.491  [ 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 17.3   n/a MPO446242   227320 (2005 TD97)          Discovered 2005-Oct-06 by Mt. Lemmon Survey at Mount Lemmon Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-17 03:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin