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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0985027126702312 6.979e-08  
a 2.999643699244638 3.3222e-08 AU
q 2.704170657824874 2.0728e-07 AU
i 3.818372189642402 8.6056e-06 deg
node 157.5776079973155 0.0001172 deg
peri 336.1196047444307 0.00012751 deg
M 196.6004493787456 5.026e-05 deg
tp 2457661.793741891009
(2016-Sep-30.29374189)
0.00026874 JED
period 1897.592410149696
5.20
3.1525e-05
8.631e-08
d
yr
n .1897140808924297 3.1518e-09 deg/d
Q 3.295116740664402 3.6495e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      812  
   data-arc span      9069 days (24.83 yr)  
   first obs. used      1988-09-14  
   last obs. used      2013-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54658  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 17:08:34  

Additional Information
 Earth MOID = 1.71887 AU 
 T_jup = 3.242 
[ 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 13.7 mag n/a MPO266023  

12285 (1991 FN2)          Discovered 1991-Mar-20 by Debehogne, H. at La Silla (809)
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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