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12285 (1991 FN2)
Classification: Main-belt Asteroid          SPK-ID: 2012285
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1015521879512044 3.8561e-08  
a 2.996524479999875 1.5958e-08 au
q 2.692220862806543 1.1883e-07 au
i 3.817938148149338 4.6335e-06 deg
node 157.4769196719563 5.0344e-05 deg
peri 335.8349510599498 5.3912e-05 deg
M 254.5204142226452 2.0586e-05 deg
tp 2459555.625384174855
(2021-Dec-07.12538417)
0.0001101 TDB
period 1894.633324829117
5.19
1.5135e-05
4.144e-08
d
yr
n .1900103810495731 1.5179e-09 deg/d
Q 3.300828097193208 1.7579e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1528  
   data-arc span      11370 days (31.13 yr)  
   first obs. used      1988-09-14  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51378  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:44:27  

Additional Information
 Earth MOID = 1.70695 au 
 Jupiter MOID = 1.7298 au 
 T_jup = 3.243 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO416845  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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