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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2099349170485331 3.3886e-08  
a 2.402577405524406 5.8486e-09 au
q 1.89819251719296 8.1871e-08 au
i 1.61833296104769 3.2988e-06 deg
node 316.4743899263601 0.0001295 deg
peri 84.5808638754245 0.00012976 deg
M 308.4296669938404 7.2528e-06 deg
tp 2459195.355175155288
(2020-Dec-11.85517516)
2.737e-05 TDB
period 1360.23676728101
3.72
4.9668e-06
1.36e-08
d
yr
n .2646598067773211 9.6639e-10 deg/d
Q 2.906962293855852 7.0764e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1567  
   data-arc span      24465 days (66.98 yr)  
   first obs. used      1953-10-31  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:09:59  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2078-Dec-18 02:10 00:08 Iris 0.0384200202177154 0.0384184234515938 0.0384216185700621 1.3692665280651 1.36926641878843 2480385.589964591 7.52611305073195 405.190666672962 17.5227535567842 -78.9711917695905 320484.83456993 T 31 CATAB v2.0f-lin.ifort 2020-Nov-13 03:10:10 2020-Nov-13 03:10

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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