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78012 (2002 JK55)
Classification: Main-belt Asteroid          SPK-ID: 2078012
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1708490979036804 3.0253e-08  
a 2.428451501937293 8.409e-09 au
q 2.013552753528469 7.4698e-08 au
i .9810244838586625 4.3496e-06 deg
node 210.7095509933496 0.00019 deg
peri 61.98547682317235 0.00019056 deg
M 348.0489769036784 1.2611e-05 deg
tp 2459442.387580971997
(2021-Aug-15.88758097)
4.8408e-05 TDB
period 1382.26903393765
3.78
7.1796e-06
1.966e-08
d
yr
n .2604413404056903 1.3527e-09 deg/d
Q 2.843350250346118 9.8457e-09 au
  Orbit Determination Parameters
   # obs. used (total)      614  
   data-arc span      9978 days (27.32 yr)  
   first obs. used      1994-03-06  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51287  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:45:31  

Additional Information
 Earth MOID = .997382 au 
 Jupiter MOID = 2.25828 au 
 T_jup = 3.489 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.61   n/a MPO614063  

78012 (2002 JK55)          Discovered 2002-May-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2002 JK55 = 1994 EH8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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