+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   243804 (2000 SR158) Classification: Main-belt Asteroid          SPK-ID: 2243804 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1521775683410503 7.3295e-08   a 3.040572861167113 3.5507e-08 au q 2.577865876790912 2.4467e-07 au i 12.62581096081534 8.3504e-06 deg node 208.7605404023086 1.9238e-05 deg peri 42.91598207623163 3.6451e-05 deg M 321.0184650014754 3.0125e-05 deg tp 2459210.194956435038 (2020-Dec-26.69495643) 0.00016397 TDB period 1936.562639708025 5.30 3.3922e-05 9.287e-08 d yr n .1858963880736009 3.2563e-09 deg/d Q 3.503279845543314 4.0911e-08 au   Orbit Determination Parameters    # obs. used (total)      320      data-arc span      7183 days (19.67 yr)      first obs. used      2000-09-23      last obs. used      2020-05-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54186      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 00:54:13   Additional Information  Earth MOID = 1.58089 au   Jupiter MOID = 1.5602 au   T_jup = 3.186  [ 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 15.5   n/a MPO433597   diameter diameter 3.640 km 0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.070   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   243804 (2000 SR158)          Discovered 2000-Sep-23 by Spacewatch at Kitt Peak Reference: 20100726/Numbers.arc Last Updated: 2010-07-28 [ show close-approach data ] Alternate Designations  2000 SR158 = 2004 FA12  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 14:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin