+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   249225 (2008 FJ69) Classification: Jupiter Trojan          SPK-ID: 2249225 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ 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 .06771664143558562 5.7861e-08   a 5.182337706634208 1.5388e-07 au q 4.831407202355945 3.4947e-07 au i 7.688632613843509 6.9298e-06 deg node 68.08797109439486 4.0422e-05 deg peri 293.8515213897637 7.5084e-05 deg M 229.5260189424462 6.9451e-05 deg tp 2460562.238819487376 (2024-Sep-08.73881949) 0.00087885 TDB period 4309.104163591436 11.80 0.00019192 5.254e-07 d yr n .08354404682108146 3.7209e-09 deg/d Q 5.533268210912472 1.643e-07 au   Orbit Determination Parameters    # obs. used (total)      330      data-arc span      6874 days (18.82 yr)      first obs. used      2001-08-26      last obs. used      2020-06-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5207      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 00:19:25   Additional Information  Earth MOID = 3.83846 au   Jupiter MOID = .0279223 au   T_jup = 2.978  [ hide covariance matrix ] Orbital Elements at Epoch 2457727.5 (2016-Dec-05.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06777460598123859 5.8349e-08   q 4.831301560824143 3.4981e-07 au tp 2456270.554431311595 (2012-Dec-09.05443131) 0.00075237 TDB node 68.09186700381609 4.0423e-05 deg peri 295.1048420343103 7.4786e-05 deg i 7.688516865136856 6.9295e-06 deg   Orbit Determination Parameters    # obs. used (total)      330      data-arc span      6874 days (18.82 yr)      first obs. used      2001-08-26      last obs. used      2020-06-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5207      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 00:19:25   Additional Information  Jupiter MOID = .0279223 au   T_jup = 2.978  Orbit Covariance (6×6)   e q tp node peri i e 3.404558400269249E-15 -1.862033937082751E-14 1.318364379232137E-11 1.637753465653421E-15 1.015368219034242E-12 1.037777889018604E-15 q -1.862033937082751E-14 1.223650649962751E-13 -7.242968773825229E-12 2.654764010594951E-14 3.209942552481087E-13 -2.25202851396319E-15 tp 1.318364379232137E-11 -7.242968773825229E-12 5.660633918916806E-7 1.648543173043997E-10 4.732221090744501E-8 7.531166651861425E-12 node 1.637753465653421E-15 2.654764010594951E-14 1.648543173043997E-10 1.633987860185266E-9 -1.604619853675835E-9 -8.956130804276487E-11 peri 1.015368219034242E-12 3.209942552481087E-13 4.732221090744501E-8 -1.604619853675835E-9 5.592907985740818E-9 8.945044431152022E-11 i 1.037777889018604E-15 -2.25202851396319E-15 7.531166651861425E-12 -8.956130804276487E-11 8.945044431152022E-11 4.801856183093385E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.2   n/a MPO437158   diameter diameter 12.203 km 1.266 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)   geometric albedo albedo 0.057   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)   249225 (2008 FJ69)          Discovered 2008-Mar-28 by Mt. Lemmon Survey at Mount Lemmon Reference: 20100824/Numbers.arc Last Updated: 2010-08-27 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 09:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin