+ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2438094808433473 4.8069e-08   a 2.304955411334443 9.2881e-09 au q 1.742985429129928 1.1067e-07 au i 4.037291504588293 4.4338e-06 deg node 344.6107458376727 6.8632e-05 deg peri 325.458945099857 7.2061e-05 deg M 79.72165559234615 2.5772e-05 deg tp 2458917.448130240609 (2020-Mar-08.94813024) 9.1498e-05 TDB period 1278.180594171753 3.50 7.7259e-06 2.115e-08 d yr n .2816503408372241 1.7024e-09 deg/d Q 2.866925393538958 1.1553e-08 au   Orbit Determination Parameters    # obs. used (total)      664      data-arc span      8341 days (22.84 yr)      first obs. used      1998-04-01      last obs. used      2021-01-31      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52055      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:42:20   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-Apr-17 22:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin