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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09861711070764261 6.4429e-08  
a 2.999141105482688 2.9698e-08 AU
q 2.70337447505546 1.9238e-07 AU
i 3.818779649580862 8.0819e-06 deg
node 157.57833324748 8.7473e-05 deg
peri 336.2038309349186 9.7362e-05 deg
M 234.4551779539844 4.6183e-05 deg
tp 2457662.091749055611
(2016-Sep-30.59174906)
0.00024831 JED
period 1897.115514431357
5.19
2.8178e-05
7.715e-08
d
yr
n .1897617711001149 2.8186e-09 deg/d
Q 3.294907735909915 3.2627e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      921  
   data-arc span      9591 days (26.26 yr)  
   first obs. used      1988-09-14  
   last obs. used      2014-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5274  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:15:27  

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
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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