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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09861710909718707 6.4638e-08  
a 2.999141104777532 2.9957e-08 AU
q 2.703374479249828 1.9276e-07 AU
i 3.818780022133529 8.0912e-06 deg
node 157.5783112869301 8.8993e-05 deg
peri 336.2038528639436 9.8756e-05 deg
M 234.4551782348474 4.6223e-05 deg
tp 2457662.091747342200
(2016-Sep-30.59174734)
0.00024847 JED
period 1897.115513762285
5.19
2.8424e-05
7.782e-08
d
yr
n .1897617711670399 2.8431e-09 deg/d
Q 3.294907730305236 3.2911e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      893  
   data-arc span      9522 days (26.07 yr)  
   first obs. used      1988-09-14  
   last obs. used      2014-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52837  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:16:56  

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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