Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
9959 (1991 VF2)
Classification: Main-belt Asteroid          SPK-ID: 2009959
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1398796154874172 4.9145e-08  
a 2.24383891022808 1.3889e-08 AU
q 1.929971586249671 1.1212e-07 AU
i 5.648500311990303 6.8121e-06 deg
node 216.2210299918942 5.4252e-05 deg
peri 247.116713156386 6.2431e-05 deg
M 274.5846818778099 3.6152e-05 deg
tp 2457291.785724536083
(2015-Sep-26.28572454)
0.00012506 JED
period 1227.682143418107
3.36
1.1399e-05
3.121e-08
d
yr
n .2932355104536176 2.7227e-09 deg/d
Q 2.557706234206489 1.5832e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      881  
   data-arc span      9368 days (25.65 yr)  
   first obs. used      1989-03-02  
   last obs. used      2014-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51504  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:10:56  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Nov-23 12:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin