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85987 (1999 JT5)
Classification: Inner Main-belt Asteroid          SPK-ID: 2085987
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06697338120252271 3.9705e-08  
a 1.910931752637547 6.5996e-09 au
q 1.782950191916148 7.6548e-08 au
i 23.51680347611641 5.5361e-06 deg
node 48.44484994016632 9.6271e-06 deg
peri 296.9417483790565 4.7053e-05 deg
M 228.1076445649108 5.0132e-05 deg
tp 2459353.995032862276
(2021-May-19.49503286)
0.00013532 TDB
period 964.8641986157361
2.64
4.9984e-06
1.368e-08
d
yr
n .3731095013334333 1.9329e-09 deg/d
Q 2.038913313358946 7.0416e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1755  
   data-arc span      13019 days (35.64 yr)  
   first obs. used      1984-11-21  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40021  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:05  

Additional Information
 Earth MOID = .83916 au 
 Jupiter MOID = 3.14851 au 
 T_jup = 3.832 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457024.5 (2015-Jan-02.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06700096537310386 3.9753e-08  
q 1.782923774217381 7.6635e-08 au
tp 2457423.988407956963
(2016-Feb-05.48840796)
0.00013007 TDB
node 48.4603943981009 9.6287e-06 deg
peri 296.919332292405 4.698e-05 deg
i 23.51496385816469 5.5357e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1755  
   data-arc span      13019 days (35.64 yr)  
   first obs. used      1984-11-21  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40021  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:05  

Additional Information
 Jupiter MOID = 3.14851 au 
 T_jup = 3.832 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.580329710336953E-15 -3.036674935648191E-15 1.200572415747797E-12 -3.405679442469687E-15 4.477822685277328E-13 1.284596605946231E-14
q -3.036674935648191E-15 5.872871442362203E-15 -1.915441832454702E-12 6.574805190281726E-15 -7.284901222989569E-13 -2.472387829443043E-14
tp 1.200572415747797E-12 -1.915441832454702E-12 1.691760627783289E-8 3.721957917699289E-13 5.986751833972321E-9 -6.857561505541625E-12
node -3.405679442469687E-15 6.574805190281726E-15 3.721957917699289E-13 9.271204988914803E-11 -8.414043166995236E-11 -5.535589509382663E-12
peri 4.477822685277328E-13 -7.284901222989569E-13 5.986751833972321E-9 -8.414043166995236E-11 2.20709947708074E-9 2.665319745035582E-12
i 1.284596605946231E-14 -2.472387829443043E-14 -6.857561505541625E-12 -5.535589509382663E-12 2.665319745035582E-12 3.064380253586581E-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 15.4   n/a MPO453291  

85987 (1999 JT5)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1999 JT5 = 1984 WN5 = 2000 QF181 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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