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186815 (2004 FJ12)
Classification: Main-belt Asteroid          SPK-ID: 2186815
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07977591919633269 4.2855e-08  
a 2.358710896143157 1.0908e-08 au
q 2.170542566284931 9.9644e-08 au
i 6.573707532618041 4.6864e-06 deg
node 234.7972896816456 3.3547e-05 deg
peri 14.67927181003302 4.319e-05 deg
M 209.7668829268672 2.6761e-05 deg
tp 2459948.671102282324
(2023-Jan-04.17110228)
9.8917e-05 TDB
period 1323.154313072466
3.62
9.1783e-06
2.513e-08
d
yr
n .2720771088022622 1.8873e-09 deg/d
Q 2.546879226001383 1.1778e-08 au
  Orbit Determination Parameters
   # obs. used (total)      536  
   data-arc span      8172 days (22.37 yr)  
   first obs. used      1998-09-29  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55229  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:52:50  

Additional Information
 Earth MOID = 1.15766 au 
 Jupiter MOID = 2.46336 au 
 T_jup = 3.539 
[ 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 16.23   n/a MPCxxxxx  

186815 (2004 FJ12)          Discovered 2004-Mar-16 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

Alternate Designations
 2004 FJ12 = 2005 QR39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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