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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09868524470324619 5.2656e-08  
a 2.998056420120413 2.4091e-08 au
q 2.702192488666692 1.6678e-07 au
i 3.818976244889174 6.0207e-06 deg
node 157.5821701376733 8.5529e-05 deg
peri 336.4145052854133 9.2029e-05 deg
M 310.1702053532027 3.4408e-05 deg
tp 2457662.948881239899
(2016-Oct-01.44888124)
0.00018186 JED
period 1896.086426124504
5.19
2.2854e-05
6.257e-08
d
yr
n .1898647630402693 2.2885e-09 deg/d
Q 3.293920351574135 2.6468e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1043  
   data-arc span      9956 days (27.26 yr)  
   first obs. used      1988-09-14  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53043  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:20:19  

Additional Information
 Earth MOID = 1.71686 au 
 Jupiter MOID = 1.73985 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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