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9591 (1991 FH2)
Classification: Main-belt Asteroid          SPK-ID: 2009591
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 .06474171279263824 6.8953e-08  
a 2.9911481726724 2.7885e-08 AU
q 2.797496116757019 2.0341e-07 AU
i .7456371703207318 5.006e-06 deg
node 279.6600831058358 0.00059723 deg
peri 246.129523095642 0.00059971 deg
M 212.0634160641474 4.7467e-05 deg
tp 2457776.976654811912
(2017-Jan-23.47665481)
0.00025283 JED
period 1889.536639926045
5.17
2.6423e-05
7.234e-08
d
yr
n .1905228998438951 2.6643e-09 deg/d
Q 3.184800228587781 2.9691e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      956  
   data-arc span      13201 days (36.14 yr)  
   first obs. used      1978-10-27  
   last obs. used      2014-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50928  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:30:32  

Additional Information
 Earth MOID = 1.80542 AU 
 T_jup = 3.253 
[ 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 13.8 mag n/a MPO319205  

9591 (1991 FH2)          Discovered 1991-Mar-20 by Debehogne, H. at La Silla (809)
Reference: 19981110/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 FH2 = 1978 UR5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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