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9922 Catcheller (1981 EO21)
Classification: Main-belt Asteroid          SPK-ID: 2009922
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .209934917833026 3.3983e-08  
a 2.402577417098555 9.4508e-09 au
q 1.898192524452486 8.2023e-08 au
i 1.618327963238897 3.9915e-06 deg
node 316.4745061234856 0.00013838 deg
peri 84.58075922515786 0.00013881 deg
M 308.4296485255477 1.38e-05 deg
tp 2459195.355246344580
(2020-Dec-11.85524634)
5.2894e-05 TDB
period 1360.236777110194
3.72
8.026e-06
2.197e-08
d
yr
n .2646598048648674 1.5616e-09 deg/d
Q 2.906962309744624 1.1435e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1190  
   data-arc span      24320 days (66.58 yr)  
   first obs. used      1953-10-31  
   last obs. used      2020-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56535  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:02:23  

Additional Information
 Earth MOID = .907295 au 
 Jupiter MOID = 2.50996 au 
 T_jup = 3.494 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO435794  
diameter diameter 2.592 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.240   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9922 Catcheller           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring.
Endowing the English language with a new term, the 1961 novel Catch-22 by U.S. writer Joseph Heller (1923-1999) epitomized both the problems of a sane person in an insane society and the absurdity of war. The name was suggested by B. G. Marsden.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000124/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 1981 EO21 = 1977 DB6 = 1979 SF8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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