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

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1042830635772938 1.7192e-08  
a 2.436225945470381 8.0621e-09 au
q 2.18216884031024 4.1551e-08 au
i 7.462657432444464 5.5987e-07 deg
node 125.3498597961594 5.3907e-06 deg
peri 77.69309549998246 1.1881e-05 deg
M 202.6071375722101 8.8662e-06 deg
tp 2459807.735713553219
(2022-Aug-16.23571355)
3.5907e-05 TDB
period 1388.912136847708
3.80
6.8944e-06
1.888e-08
d
yr
n .2591956614455544 1.2866e-09 deg/d
Q 2.690283050630522 8.9028e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2082  
   data-arc span      25845 days (70.76 yr)  
   first obs. used      1950-05-10  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46341  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 21:42:46  

Additional Information
 Earth MOID = 1.19308 au 
 Jupiter MOID = 2.29529 au 
 T_jup = 3.485 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.89   n/a E2021B10  
diameter diameter 7.753 km 0.191 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.097   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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