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9959 (1991 VF2)
Classification: Main-belt Asteroid          SPK-ID: 2009959
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1398796051933546 5.1986e-08  
a 2.243838907435262 1.4643e-08 AU
q 1.92997160694573 1.1717e-07 AU
i 5.648501207528294 8.0357e-06 deg
node 216.2210291962258 5.5091e-05 deg
peri 247.1167192381793 6.3886e-05 deg
M 274.5846787310961 3.6598e-05 deg
tp 2457291.785734723267
(2015-Sep-26.28573472)
0.00012642 JED
period 1227.682141126035
3.36
1.2017e-05
3.29e-08
d
yr
n .2932355110010857 2.8703e-09 deg/d
Q 2.557706207924795 1.6691e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      826  
   data-arc span      9245 days (25.31 yr)  
   first obs. used      1989-03-02  
   last obs. used      2014-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51234  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:23:02  

Additional Information
 Earth MOID = .954794 AU 
 T_jup = 3.613 
[ 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 14.3 mag n/a MPO263438  

9959 (1991 VF2)          Discovered 1991-Nov-09 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 19990202/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 VF2 = 1989 EZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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