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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1034025034301657 7.2887e-08  
a 2.4365778801 1.6294e-08 AU
q 2.184629627495093 1.7382e-07 AU
i 7.459200121128521 6.1461e-06 deg
node 125.3907910329782 5.5074e-05 deg
peri 77.74736532354709 6.2712e-05 deg
M 352.5169403649817 2.9762e-05 deg
tp 2457029.376568165467
(2015-Jan-06.87656817)
0.00011487 JED
period 1389.21310888935
3.80
1.3935e-05
3.815e-08
d
yr
n .2591395068880493 2.5993e-09 deg/d
Q 2.688526132704906 1.7979e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      970  
   data-arc span      23701 days (64.89 yr)  
   first obs. used      1950-05-10  
   last obs. used      2015-03-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52137  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:36:28  

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 13.8 mag n/a MPO319209  

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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