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12285 (1991 FN2)
Classification: Main-belt Asteroid          SPK-ID: 2012285
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09874379521254431 5.1836e-08  
a 2.998084488126584 2.3491e-08 au
q 2.702042247401107 1.6507e-07 au
i 3.818989214244426 5.6024e-06 deg
node 157.5815565469561 8.4342e-05 deg
peri 336.4655396713136 9.0604e-05 deg
M 348.1035300889834 3.32e-05 deg
tp 2457663.158477456470
(2016-Oct-01.65847746)
0.00017498 JED
period 1896.113053120103
5.19
2.2285e-05
6.101e-08
d
yr
n .1898620967814185 2.2315e-09 deg/d
Q 3.294126728852062 2.5811e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1094  
   data-arc span      10064 days (27.55 yr)  
   first obs. used      1988-09-14  
   last obs. used      2016-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53549  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:13:46  

Additional Information
 Earth MOID = 1.71533 au 
 Jupiter MOID = 1.73903 au 
 T_jup = 3.243 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO358749  

12285 (1991 FN2)          Discovered 1991-Mar-20 by Debehogne, H. at La Silla
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 FN2 = 1988 RL11 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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