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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09861710726058343 6.4921e-08  
a 2.999141103059169 3.0681e-08 AU
q 2.703374483209159 1.9314e-07 AU
i 3.818779808533856 8.0968e-06 deg
node 157.5782626764286 9.4444e-05 deg
peri 336.2039029502457 0.0001039 deg
M 234.4551773473023 4.652e-05 deg
tp 2457662.091751450764
(2016-Sep-30.59175145)
0.00024977 JED
period 1897.115512131852
5.19
2.9111e-05
7.97e-08
d
yr
n .1897617713301263 2.9119e-09 deg/d
Q 3.29490772290918 3.3707e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      849  
   data-arc span      9482 days (25.96 yr)  
   first obs. used      1988-09-14  
   last obs. used      2014-08-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53753  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:59:52  

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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