+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22915 (1999 TA40) Classification: Main-belt Asteroid          SPK-ID: 2022915 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05209706795468102 3.3394e-08   a 2.987732304750911 1.6392e-08 au q 2.832080211839907 9.7144e-08 au i 11.49741459347463 3.3792e-06 deg node 126.9538868801144 1.9643e-05 deg peri 126.9344611057165 4.0824e-05 deg M 173.0850776619781 3.6502e-05 deg tp 2458293.581882800349 (2018-Jun-24.08188280) 0.00018975 TDB period 1886.300809995217 5.16 1.5524e-05 4.25e-08 d yr n .1908497298481852 1.5706e-09 deg/d Q 3.143384397661916 1.7246e-08 au   Orbit Determination Parameters    # obs. used (total)      1548      data-arc span      9208 days (25.21 yr)      first obs. used      1995-11-27      last obs. used      2021-02-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .4933      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:14:43   Additional Information  Earth MOID = 1.83096 au   Jupiter MOID = 1.99278 au   T_jup = 3.225  [ 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 13.6   n/a MPO358846   22915 (1999 TA40)          Discovered 1999-Oct-03 by CSS at Catalina Reference: 20010309/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-22 04:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin