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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09861710909997411 6.4711e-08  
a 2.999141104933742 3.0139e-08 AU
q 2.703374479382274 1.9286e-07 AU
i 3.818780005138194 8.0913e-06 deg
node 157.5782935629915 9.0367e-05 deg
peri 336.2038701621357 0.00010006 deg
M 234.455178550385 4.63e-05 deg
tp 2457662.091745731079
(2016-Sep-30.59174573)
0.00024881 JED
period 1897.115513910501
5.19
2.8597e-05
7.829e-08
d
yr
n .1897617711522143 2.8605e-09 deg/d
Q 3.29490773048521 3.3111e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      885  
   data-arc span      9515 days (26.05 yr)  
   first obs. used      1988-09-14  
   last obs. used      2014-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52997  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:22:29  

Additional Information
 Earth MOID = 1.71833 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 13.7 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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