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11891 (1991 FJ2)
Classification: Main-belt Asteroid          SPK-ID: 2011891
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09356217707049388 7.5362e-08  
a 2.242912693409471 1.4396e-08 AU
q 2.033060898835036 1.7167e-07 AU
i 2.979594857698479 7.5594e-06 deg
node 186.6898463433428 0.00010954 deg
peri 357.1506083730205 0.00011442 deg
M 314.7658199898332 3.4782e-05 deg
tp 2456954.663372070755
(2014-Oct-24.16337207)
0.000119 JED
period 1226.922073816698
3.36
1.1813e-05
3.234e-08
d
yr
n .293417167791362 2.825e-09 deg/d
Q 2.452764487983906 1.5743e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      826  
   data-arc span      23475 days (64.27 yr)  
   first obs. used      1949-11-19  
   last obs. used      2014-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50683  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 10:59:13  

Additional Information
 Earth MOID = 1.03532 AU 
 T_jup = 3.625 
[ 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 14.6 mag n/a MPO250330  

11891 (1991 FJ2)          Discovered 1991-Mar-20 by Debehogne, H. at La Silla (809)
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 FJ2 = 1999 RR257 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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