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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07326428409043172 6.6428e-08  
a 2.751117231329554 2.4816e-08 AU
q 2.549558596927343 1.8221e-07 AU
i 4.031657616930361 7.0559e-06 deg
node 285.5761731757743 9.8554e-05 deg
peri 94.41117599256329 0.00011107 deg
M 80.61575899585242 5.1351e-05 deg
tp 2456427.267444072494
(2013-May-14.76744407)
0.00023803 JED
period 1666.717795720499
4.56
2.2552e-05
6.174e-08
d
yr
n .2159933738778958 2.9225e-09 deg/d
Q 2.952675865731764 2.6634e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      994  
   data-arc span      15587 days (42.67 yr)  
   first obs. used      1971-07-27  
   last obs. used      2014-03-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54115  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:03:52  

Additional Information
 Earth MOID = 1.55432 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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