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7739 Cech (1982 CE)
Classification: Main-belt Asteroid          SPK-ID: 2007739
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1263579005510859 4.1664e-08  
a 2.324955269127402 7.476e-09 au
q 2.031178802445278 9.5876e-08 au
i 3.391858904764094 4.2821e-06 deg
node 158.4908658556543 5.7921e-05 deg
peri 15.43683011269854 5.9395e-05 deg
M 269.1145340438051 1.4887e-05 deg
tp 2459327.398002464980
(2021-Apr-22.89800246)
5.4377e-05 TDB
period 1294.852588906943
3.55
6.2455e-06
1.71e-08
d
yr
n .2780239257226152 1.341e-09 deg/d
Q 2.618731735809525 8.4206e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1581  
   data-arc span      23997 days (65.70 yr)  
   first obs. used      1954-05-23  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5232  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:36:59  

Additional Information
 Earth MOID = 1.03641 au 
 Jupiter MOID = 2.34357 au 
 T_jup = 3.562 
[ 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 14.6   n/a MPO347587  
diameter diameter 4.196 km 0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.174   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7739 Čech           Discovered 1982 Feb. 14 by L. Brozek at Klet.
Named in memory of Eduard Čech (1893-1960), Czech mathematician, professor at Charles University in Prague and Masaryk University in Brno. One of his papers, On bicompact spaces, introduced what today is called the Stone-Čech compactification of regular topological spaces. His research in topology is fundamental, but his work was also important in the development of functional analysis. Name proposed by J. Ticha and Z. Moravec following a number of suggestions from Charles University.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1982 CE = 1989 CZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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