+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259039 (2002 TM254) Classification: Main-belt Asteroid          SPK-ID: 2259039 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .197597160091656 5.488e-08   a 2.419549802227301 1.4807e-08 au q 1.941453632606858 1.3881e-07 au i 2.819493721954549 4.9916e-06 deg node 105.2911516044029 0.00011254 deg peri 261.9579923803107 0.00011321 deg M 259.3090631034439 1.3433e-05 deg tp 2459384.992751235629 (2021-Jun-19.49275124) 5.2965e-05 TDB period 1374.675762397844 3.76 1.2619e-05 3.455e-08 d yr n .2618799355071576 2.404e-09 deg/d Q 2.897645971847743 1.7733e-08 au   Orbit Determination Parameters    # obs. used (total)      263      data-arc span      9500 days (26.01 yr)      first obs. used      1994-07-11      last obs. used      2020-07-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57018      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 23:12:49   Additional Information  Earth MOID = .942624 au   Jupiter MOID = 2.56508 au   T_jup = 3.486  [ 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 17.2   n/a MPO437203   259039 (2002 TM254)          Discovered 2002-Oct-09 by LONEOS at Anderson Mesa Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-22 23:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin