+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102515 (1999 TT305) Classification: Main-belt Asteroid          SPK-ID: 2102515 [ 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 .2438094841343537 4.8148e-08   a 2.304955409737798 9.3037e-09 au q 1.742985420336938 1.1087e-07 au i 4.037292075718012 4.4662e-06 deg node 344.6107494448166 6.8709e-05 deg peri 325.4589426797401 7.2144e-05 deg M 79.72165464206407 2.5786e-05 deg tp 2458917.448133908692 (2020-Mar-08.94813391) 9.1551e-05 TDB period 1278.180592843658 3.50 7.7388e-06 2.119e-08 d yr n .2816503411298732 1.7053e-09 deg/d Q 2.866925399138659 1.1572e-08 au   Orbit Determination Parameters    # obs. used (total)      662      data-arc span      8327 days (22.80 yr)      first obs. used      1998-04-01      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51942      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:31:38   Additional Information  Earth MOID = .728552 au   Jupiter MOID = 2.41732 au   T_jup = 3.545  [ 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 16.2   n/a MPO432551   102515 (1999 TT305)          Discovered 1999-Oct-03 by CSS at Catalina Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-04 23:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin