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20468 Petercook (1999 NK4)
Classification: Main-belt Asteroid          SPK-ID: 2020468
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2358516175338713 7.9128e-08  
a 3.181629101814917 4.656e-08 AU
q 2.43123673175903 2.4736e-07 AU
i 1.961532953515516 8.2482e-06 deg
node 52.61313341589517 0.00026114 deg
peri 274.8537272687007 0.00026192 deg
M 199.0656649254415 2.2058e-05 deg
tp 2457727.156895346749
(2016-Dec-04.65689535)
0.00014196 JED
period 2072.873275738701
5.68
4.5502e-05
1.246e-07
d
yr
n .1736719770636767 3.8123e-09 deg/d
Q 3.932021471870803 5.7542e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      441  
   data-arc span      7085 days (19.40 yr)  
   first obs. used      1994-10-26  
   last obs. used      2014-03-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58664  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:15:15  

Additional Information
 Earth MOID = 1.41966 AU 
 T_jup = 3.154 
[ 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 14.5 mag n/a MPO250414  

20468 Petercook           Discovered 1999 July 13 by J. Broughton at Reedy Creek.
British comedy writer and performer Peter E. Cook (1937-1995) was the prime instigator of the new genre of satirical sketch comedy with his 1960's revue Beyond The Fringe. His most famous sketch included diminutive Dudley Moore as an ever hopping one-legged man auditioning for the role of Tarzan!
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050407/MPCPages.arcLast Updated: 2005-04-15

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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