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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09850268755722102 6.6221e-08  
a 2.999643711384183 3.3921e-08 AU
q 2.704170744098724 1.9491e-07 AU
i 3.818369082356124 8.1775e-06 deg
node 157.5776459500265 0.00011005 deg
peri 336.1195908187975 0.0001195 deg
M 196.6004162636012 4.7745e-05 deg
tp 2457661.793921672396
(2016-Sep-30.29392167)
0.00025604 JED
period 1897.592421669018
5.20
3.2188e-05
8.813e-08
d
yr
n .1897140797407716 3.218e-09 deg/d
Q 3.295116678669642 3.7262e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      823  
   data-arc span      9418 days (25.79 yr)  
   first obs. used      1988-09-14  
   last obs. used      2014-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54407  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:28:07  

Additional Information
 Earth MOID = 1.71887 AU 
 T_jup = 3.242 
[ 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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