Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2107927375631285 3.558e-08  
a 2.403373134193147 9.7673e-09 au
q 1.896759531850897 8.5467e-08 au
i 1.616395234720555 4.6023e-06 deg
node 316.568848088926 0.00014496 deg
peri 84.29598151787157 0.00014545 deg
M 202.9160776373719 1.4021e-05 deg
tp 2459194.326352187611
(2020-Dec-10.82635219)
5.5273e-05 TDB
period 1360.912584637624
3.73
8.2961e-06
2.271e-08
d
yr
n .2645283790184502 1.6126e-09 deg/d
Q 2.909986736535396 1.1826e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1138  
   data-arc span      23907 days (65.45 yr)  
   first obs. used      1953-10-31  
   last obs. used      2019-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56963  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:03:56  

Additional Information
 Earth MOID = .905237 au 
 Jupiter MOID = 2.50622 au 
 T_jup = 3.493 
[ 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

[ show close-approach data ]
Alternate Designations
 1981 EO21 = 1977 DB6 = 1979 SF8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin