+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   146163 (2000 ST204) Classification: Main-belt Asteroid          SPK-ID: 2146163 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1533720963479416 5.1187e-08   a 3.111583012018725 2.863e-08 au q 2.634353002504771 1.5833e-07 au i 2.661584644856238 7.5021e-06 deg node 43.52852593557769 0.00014031 deg peri 39.89007772514414 0.00014323 deg M 159.9601563858658 3.0724e-05 deg tp 2458109.700768316531 (2017-Dec-22.20076832) 0.00016414 TDB period 2004.797511153128 5.49 2.767e-05 7.576e-08 d yr n .1795692572428093 2.4784e-09 deg/d Q 3.58881302153268 3.3021e-08 au   Orbit Determination Parameters    # obs. used (total)      433      data-arc span      6787 days (18.58 yr)      first obs. used      2000-09-24      last obs. used      2019-04-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57531      source      ORB      producer      Otto Matic      solution date      2019-Jul-13 08:19:35   Additional Information  Earth MOID = 1.65107 au   Jupiter MOID = 1.64816 au   T_jup = 3.199  [ 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 15.2   n/a MPO297016   diameter diameter 5.692 km 1.715 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.055   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   146163 (2000 ST204)          Discovered 2000-Sep-24 by LINEAR at Socorro Reference: 20070106/Numbers.arc Last Updated: 2007-01-09 [ show close-approach data ] Alternate Designations  2000 ST204 = 2002 AX112  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-08 14:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin