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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1398796144586451 4.884e-08  
a 2.243838910090601 1.3799e-08 AU
q 1.929971588439821 1.1159e-07 AU
i 5.648501552625897 6.7464e-06 deg
node 216.2210397227443 5.3845e-05 deg
peri 247.1167040888769 6.2086e-05 deg
M 274.5846813733816 3.614e-05 deg
tp 2457291.785726229528
(2015-Sep-26.28572623)
0.00012502 JED
period 1227.682143305278
3.36
1.1325e-05
3.101e-08
d
yr
n .2932355104805673 2.705e-09 deg/d
Q 2.55770623174138 1.5729e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      933  
   data-arc span      9427 days (25.81 yr)  
   first obs. used      1989-03-02  
   last obs. used      2014-12-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51769  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:27:39  

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 14.4 mag n/a MPO309229  

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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