+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   117046 (2004 JL31) Classification: Main-belt Asteroid          SPK-ID: 2117046 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08879985796200908 3.5462e-08   a 2.960588952911083 1.8888e-08 au q 2.697689074408686 1.0909e-07 au i 11.70272110624009 3.8936e-06 deg node 120.3075621721759 2.1226e-05 deg peri 190.9344413976501 3.3771e-05 deg M 2.967675936875878 2.5646e-05 deg tp 2458985.161617180430 (2020-May-15.66161718) 0.00013254 TDB period 1860.653903086929 5.09 1.7806e-05 4.875e-08 d yr n .1934803669842843 1.8515e-09 deg/d Q 3.223488831413481 2.0565e-08 au   Orbit Determination Parameters    # obs. used (total)      1006      data-arc span      8166 days (22.36 yr)      first obs. used      1998-03-24      last obs. used      2020-08-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51505      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 09:57:34   Additional Information  Earth MOID = 1.68392 au   Jupiter MOID = 2.02321 au   T_jup = 3.229  [ 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 14.2   n/a MPO436561   diameter diameter 4.949 km 0.253 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.165   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   117046 (2004 JL31)          Discovered 2004-May-15 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2004 JL31 = 1998 FQ124 = 2000 SG355 = 2002 AV82  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-27 13:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin