+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   74877 (1999 TU103) Classification: Main-belt Asteroid          SPK-ID: 2074877 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09024214867160284 4.1903e-08   a 2.265927695614363 9.8e-09 au q 2.061445511627629 9.748e-08 au i 8.350611285828077 4.9731e-06 deg node 351.6348032932216 2.9513e-05 deg peri 81.52307503145845 4.0976e-05 deg M 332.4258216146021 2.9018e-05 deg tp 2459095.926188678307 (2020-Sep-03.42618868) 0.00010064 TDB period 1245.854996803198 3.41 8.0824e-06 2.213e-08 d yr n .2889581860840483 1.8746e-09 deg/d Q 2.470409879601096 1.0684e-08 au   Orbit Determination Parameters    # obs. used (total)      558      data-arc span      9737 days (26.66 yr)      first obs. used      1994-03-06      last obs. used      2020-11-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5905      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 04:09:29   Additional Information  Earth MOID = 1.09503 au   Jupiter MOID = 2.7198 au   T_jup = 3.597  [ 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 MPO439564   74877 (1999 TU103)          Discovered 1999-Oct-03 by LINEAR at Socorro Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-20 05:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin