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9930 Billburrows (1984 CP)
Classification: Main-belt Asteroid          SPK-ID: 2009930
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1034024980085773 7.5373e-08  
a 2.436577880896309 1.7085e-08 AU
q 2.184629641419185 1.8117e-07 AU
i 7.459200008948163 6.4842e-06 deg
node 125.3907900178667 5.5412e-05 deg
peri 77.74736702552796 6.3289e-05 deg
M 352.5169389998168 3.1333e-05 deg
tp 2457029.376573447692
(2015-Jan-06.87657345)
0.00012096 JED
period 1389.213109570373
3.80
1.4611e-05
4e-08
d
yr
n .2591395067610134 2.7256e-09 deg/d
Q 2.688526120373433 1.8851e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      934  
   data-arc span      23323 days (63.85 yr)  
   first obs. used      1950-05-10  
   last obs. used      2014-03-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53044  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:40:45  

Additional Information
 Earth MOID = 1.19767 AU 
 T_jup = 3.485 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO250309  

9930 Billburrows           Discovered 1984 Feb. 5 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
William E. Burrows (b. 1937), of New York University, is a top authority on space, national security, spy satellites and spy planes. His books are extensively researched and detailed, yet enjoyably readable; they include, among others, Deep Black and Exploring Space. The name was suggested by E. M. Standish.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010705/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1984 CP = 1961 CO = 1961 EF = 1980 BB6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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