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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06474170881168848 6.9122e-08  
a 2.991148167082736 2.8856e-08 AU
q 2.797496123436849 2.0356e-07 AU
i .7456355740947731 5.3019e-06 deg
node 279.6601060684374 0.00059794 deg
peri 246.1295121951761 0.0006007 deg
M 212.0634064037017 4.9287e-05 deg
tp 2457776.976703340273
(2017-Jan-23.47670334)
0.00026149 JED
period 1889.53663462948
5.17
2.7343e-05
7.486e-08
d
yr
n .1905229003779504 2.757e-09 deg/d
Q 3.184800210728621 3.0724e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      893  
   data-arc span      13122 days (35.93 yr)  
   first obs. used      1978-10-27  
   last obs. used      2014-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51936  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:15:37  

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 13.7 mag n/a PDS3 (MPC 32887)  

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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