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66311 (1999 JE42)
Classification: Main-belt Asteroid          SPK-ID: 2066311
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1768168233244323 4.8316e-08  
a 2.584316969916056 1.6149e-08 au
q 2.127366252832076 1.2342e-07 au
i 4.953833425506102 5.1135e-06 deg
node 55.18611633493827 7.1736e-05 deg
peri 220.5829043332796 7.3913e-05 deg
M 39.64960959529863 2.2034e-05 deg
tp 2459033.370347327525
(2020-Jul-02.87034733)
9.2118e-05 TDB
period 1517.459454864975
4.15
1.4224e-05
3.894e-08
d
yr
n .23723862858137 2.2238e-09 deg/d
Q 3.041267687000035 1.9005e-08 au
  Orbit Determination Parameters
   # obs. used (total)      509  
   data-arc span      7769 days (21.27 yr)  
   first obs. used      1999-05-08  
   last obs. used      2020-08-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62325  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:21:06  

Additional Information
 Earth MOID = 1.11218 au 
 Jupiter MOID = 2.08294 au 
 T_jup = 3.396 
[ show covariance matrix ]

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 15.83   n/a E2021B10  

66311 (1999 JE42)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JE42 = 2003 FM119 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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