+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   249253 (2008 RC131) Classification: Main-belt Asteroid          SPK-ID: 2249253 [ 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 .06490346326625243 5.635e-08   a 3.12499684824034 3.4792e-08 au q 2.922173730093418 1.8611e-07 au i 2.001680648415774 7.0025e-06 deg node 334.4368001439071 0.00016895 deg peri 83.88673821550996 0.0001778 deg M 4.662950033007478 5.3616e-05 deg tp 2458974.364484939428 (2020-May-04.86448494) 0.0003005 TDB period 2017.775304303978 5.52 3.3697e-05 9.226e-08 d yr n .1784143156238004 2.9796e-09 deg/d Q 3.327819966387261 3.705e-08 au   Orbit Determination Parameters    # obs. used (total)      187      data-arc span      8063 days (22.08 yr)      first obs. used      1997-09-30      last obs. used      2019-10-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61255      source      ORB      producer      Otto Matic      solution date      2019-Nov-08 02:44:31   Additional Information  Earth MOID = 1.93515 au   Jupiter MOID = 1.9032 au   T_jup = 3.211  [ 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 16.3   n/a MPO454847   diameter diameter 4.055 km 1.313 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.025   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   249253 (2008 RC131)          Discovered 2008-Sep-09 by Mt. Lemmon Survey at Mount Lemmon Reference: 20100824/Numbers.arc Last Updated: 2010-08-27 [ show close-approach data ] Alternate Designations  2008 RC131 = 2000 FN4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-13 18:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin