+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   226510 (2003 TA42) Classification: Main-belt Asteroid          SPK-ID: 2226510 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1350830624617945 6.0153e-08   a 3.130411762850806 3.6508e-08 au q 2.707546155158495 1.8905e-07 au i 3.423413295554118 5.3853e-06 deg node 250.6267172102411 0.0001184 deg peri 267.3434147224103 0.00012017 deg M 229.3318259598475 2.2479e-05 deg tp 2459734.790566140941 (2022-Jun-04.29056614) 0.00013187 TDB period 2023.022099700494 5.54 3.539e-05 9.689e-08 d yr n .1779515903722938 3.113e-09 deg/d Q 3.553277370543118 4.144e-08 au   Orbit Determination Parameters    # obs. used (total)      315      data-arc span      7222 days (19.77 yr)      first obs. used      2000-02-06      last obs. used      2019-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51992      source      ORB      producer      Otto Matic      solution date      2019-Dec-14 15:35:49   Additional Information  Earth MOID = 1.71957 au   Jupiter MOID = 1.47006 au   T_jup = 3.197  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.4   n/a MPO454626   diameter diameter 4.117 km 0.729 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.066   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   226510 (2003 TA42)          Discovered 2003-Oct-02 by Spacewatch at Kitt Peak Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ show close-approach data ] Alternate Designations  2003 TA42 = 2006 HB7  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-09 03:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin