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66355 (1999 JN85)
Classification: Main-belt Asteroid          SPK-ID: 2066355
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2070099565159221 2.8959e-08  
a 2.453474142649105 1.124e-08 au
q 1.945580567066375 7.065e-08 au
i 8.739978285984385 5.1728e-06 deg
node 155.0810514084514 2.6255e-05 deg
peri 107.136375561002 3.0495e-05 deg
M 154.5134693928216 1.696e-05 deg
tp 2458398.031287259465
(2018-Oct-06.53128726)
6.4771e-05 TDB
period 1403.688218502126
3.84
9.6461e-06
2.641e-08
d
yr
n .2564672092098597 1.7624e-09 deg/d
Q 2.961367718231836 1.3567e-08 au
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      7542 days (20.65 yr)  
   first obs. used      1999-05-15  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54724  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 10:49:17  

Additional Information
 Earth MOID = .951692 au 
 Jupiter MOID = 2.18185 au 
 T_jup = 3.449 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457163.5 (2015-May-21.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2068932866810102 2.8869e-08  
q 1.945941634239498 7.0405e-08 au
tp 2456995.230320678761
(2014-Dec-03.73032068)
6.2832e-05 TDB
node 155.1173900256891 2.6245e-05 deg
peri 107.2434067849306 3.0512e-05 deg
i 8.741540767367903 5.1748e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      7542 days (20.65 yr)  
   first obs. used      1999-05-15  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54724  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 10:49:17  

Additional Information
 Jupiter MOID = 2.18185 au 
 T_jup = 3.449 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.333952590751014E-16 -2.016248992422273E-15 -4.314177611774729E-13 3.289117881792595E-15 -1.241920825448956E-13 1.496013422976557E-15
q -2.016248992422273E-15 4.956808433769121E-15 1.139350957071101E-12 -5.728016640669885E-15 3.228716359650409E-13 -2.842514240584442E-15
tp -4.314177611774729E-13 1.139350957071101E-12 3.947839436827911E-9 -4.873856647000113E-12 9.959945068857422E-10 -3.182157072142933E-12
node 3.289117881792595E-15 -5.728016640669885E-15 -4.873856647000113E-12 6.887814949433696E-10 -6.813565085715888E-10 6.62296276644877E-11
peri -1.241920825448956E-13 3.228716359650409E-13 9.959945068857422E-10 -6.813565085715888E-10 9.310003719599669E-10 -6.625232863055795E-11
i 1.496013422976557E-15 -2.842514240584442E-15 -3.182157072142933E-12 6.62296276644877E-11 -6.625232863055795E-11 2.677849549464272E-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 15.3   n/a MPO436244  
diameter diameter 2.156 km 0.439 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.380   0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66355 (1999 JN85)          Discovered 1999-May-15 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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