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

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .103487238783359 6.5084e-08  
a 2.43720465341031 1.4964e-08 au
q 2.184985073478924 1.5156e-07 au
i 7.458562907637709 5.0907e-06 deg
node 125.388795506572 4.7414e-05 deg
peri 77.92710421887917 5.5854e-05 deg
M 147.790861770588 2.7297e-05 deg
tp 2457029.966032776052
(2015-Jan-07.46603278)
0.00010555 JED
period 1389.749174880963
3.80
1.2799e-05
3.504e-08
d
yr
n .2590395493710836 2.3857e-09 deg/d
Q 2.689424233341696 1.6513e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1107  
   data-arc span      23844 days (65.28 yr)  
   first obs. used      1950-05-10  
   last obs. used      2015-08-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50461  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:37:11  

Additional Information
 Earth MOID = 1.19619 au 
 Jupiter MOID = 2.29885 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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