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13423 Bobwoolley (1999 VR22)
Classification: Main-belt Asteroid          SPK-ID: 2013423
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07397287050229315 6.1539e-08  
a 2.75064696760027 2.5475e-08 AU
q 2.54717371566845 1.6849e-07 AU
i 4.029123889084106 6.8956e-06 deg
node 285.5584817657676 9.3067e-05 deg
peri 94.40089312700799 0.00010545 deg
M 123.7709002954285 4.919e-05 deg
tp 2456427.615914899591
(2013-May-15.11591490)
0.00022849 JED
period 1666.29046200583
4.56
2.3149e-05
6.338e-08
d
yr
n .2160487671318978 3.0014e-09 deg/d
Q 2.95412021953209 2.736e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1025  
   data-arc span      15862 days (43.43 yr)  
   first obs. used      1971-07-27  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50552  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:37:38  

Additional Information
 Earth MOID = 1.55321 AU 
 T_jup = 3.338 
[ 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 13.0 mag n/a MPO267760  

13423 Bobwoolley           Discovered 1999 Nov. 13 by C. W. Juels at Fountain Hills.
Robert Woolley (b. 1953) taught astronomy and was planetarium director at Montgomery College (1976-1981) and president of the Von Braun Astronomical Society (1993-1994). Since 1994 he has been conducting week-long astronomical/geological educational experiences at a dark site near Flagstaff, Arizona.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1999 VR22 = 1971 OY = 1971 QC2 = 1985 QN4 = 1990 UC3 = 1990 WC13 = 1996 BD13 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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