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11955 Russrobb (1994 CA1)
Classification: Main-belt Asteroid          SPK-ID: 2011955
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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 2-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.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06956716912262674 4.3853e-08  
a 2.398367671784999 1.3385e-08 AU
q 2.231520022343691 1.0379e-07 AU
i 4.485050678698017 6.4434e-06 deg
node 195.883216665155 6.1948e-05 deg
peri 68.56621475128256 8.1068e-05 deg
M 97.57070618504659 5.0381e-05 deg
tp 2456632.803905724056
0.0001897 JED
period 1356.66327645814
n .265356928463382 2.2213e-09 deg/d
Q 2.565215321226306 1.4316e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      7623 days (20.87 yr)  
   first obs. used      1994-02-03  
   last obs. used      2014-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58297  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:14:13  

Additional Information
 Earth MOID = 1.22224 AU 
 T_jup = 3.520 
[ 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 15.1 mag n/a MPO263456  

11955 Russrobb           Discovered 1994 Feb. 8 by D. D. Balam at the Dominion Astrophysical Observatory, Victoria.
Russell M. Robb (b. 1952), astronomer at the University of Victoria, played the leading role in automating the university's 0.5-m telescope and equipping it with a CCD camera. The telescope has been used extensively in the university's observational programs, including astrometric work on comets and minor planets.
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 ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2015-Mar-29 16:06 UT
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