+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   295394 (2008 JJ7) Classification: Main-belt Asteroid          SPK-ID: 2295394 [ 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 .1690521191427001 6.6743e-08   a 2.77050391118726 3.4999e-08 au q 2.302144353907914 1.7623e-07 au i 12.56527066726023 6.6508e-06 deg node 90.83677097538039 2.3934e-05 deg peri 165.9888556688273 3.0422e-05 deg M 204.2991609240648 2.5262e-05 deg tp 2459728.992408640987 (2022-May-29.49240864) 0.0001294 TDB period 1684.366434164511 4.61 3.1918e-05 8.739e-08 d yr n .2137302149330524 4.05e-09 deg/d Q 3.238863468466605 4.0916e-08 au   Orbit Determination Parameters    # obs. used (total)      246      data-arc span      6159 days (16.86 yr)      first obs. used      2003-04-05      last obs. used      2020-02-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54691      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 19:49:34   Additional Information  Earth MOID = 1.28884 au   Jupiter MOID = 1.84688 au   T_jup = 3.282  [ hide covariance matrix ] Orbital Elements at Epoch 2457539.5 (2016-May-31.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1701495825499629 6.6554e-08   q 2.297883030768535 1.7605e-07 au tp 2458044.629684727797 (2017-Oct-18.12968473) 0.00010409 TDB node 90.90436609396559 2.3949e-05 deg peri 165.9548651228125 3.0401e-05 deg i 12.56443695170255 6.6498e-06 deg   Orbit Determination Parameters    # obs. used (total)      246      data-arc span      6159 days (16.86 yr)      first obs. used      2003-04-05      last obs. used      2020-02-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54691      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 19:49:34   Additional Information  Jupiter MOID = 1.84688 au   T_jup = 3.282  Orbit Covariance (6×6)   e q tp node peri i e 4.429483980837469E-15 -1.157942738465199E-14 2.37079729168003E-12 2.497496579317558E-14 2.592373198124338E-13 -4.781453686135269E-15 q -1.157942738465199E-14 3.099246799467135E-14 -4.400991714619252E-12 -5.861554926347432E-14 -3.823889918996769E-13 1.121463381416047E-14 tp 2.37079729168003E-12 -4.400991714619252E-12 1.083434950940404E-8 4.709256201431474E-11 1.944787517242323E-9 -1.198331502751409E-11 node 2.497496579317558E-14 -5.861554926347432E-14 4.709256201431474E-11 5.735464173412879E-10 -5.516643626005079E-10 -1.605864529365791E-11 peri 2.592373198124338E-13 -3.823889918996769E-13 1.944787517242323E-9 -5.516643626005079E-10 9.242496050866975E-10 1.358975507106061E-11 i -4.781453686135269E-15 1.121463381416047E-14 -1.198331502751409E-11 -1.605864529365791E-11 1.358975507106061E-11 4.421964913374245E-11 [ 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 16.0   n/a MPO413252   295394 (2008 JJ7)          Discovered 2008-May-02 by Spacewatch at Kitt Peak Reference: 20110912/Numbers.arc Last Updated: 2011-09-14 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 23:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin