+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   150918 (2001 TO54) Classification: Main-belt Asteroid          SPK-ID: 2150918 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1493517852747034 5.4645e-08   a 2.541954565764413 1.7098e-08 au q 2.162309113280314 1.3691e-07 au i 9.907938871914409 3.8461e-06 deg node 209.0387982803692 3.3356e-05 deg peri 257.0525974609469 3.6421e-05 deg M 185.3071088220321 1.7189e-05 deg tp 2459918.828064532642 (2022-Dec-05.32806453) 7.5005e-05 TDB period 1480.301238865554 4.05 1.4935e-05 4.089e-08 d yr n .2431937436436182 2.4537e-09 deg/d Q 2.921600018248512 1.9651e-08 au   Orbit Determination Parameters    # obs. used (total)      392      data-arc span      6900 days (18.89 yr)      first obs. used      2001-09-28      last obs. used      2020-08-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5568      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 13:48:15   Additional Information  Earth MOID = 1.20399 au   Jupiter MOID = 2.30449 au   T_jup = 3.409  [ 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 16.29   n/a E2021B55   150918 (2001 TO54)          Discovered 2001-Oct-14 by LINEAR at Socorro Reference: 20070303/Numbers.arc Last Updated: 2007-03-07 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-13 12:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin