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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06890848164809149 2.8739e-08  
a 2.3984681226842 8.1188e-09 au
q 2.233193326068683 6.9828e-08 au
i 4.487215512015551 4.1532e-06 deg
node 195.8490724429755 4.4521e-05 deg
peri 68.82268717188745 5.7183e-05 deg
M 13.06676073049652 3.7827e-05 deg
tp 2459347.254699611530
(2021-May-12.75469961)
0.00014246 TDB
period 1356.74850909859
3.71
6.8889e-06
1.886e-08
d
yr
n .2653402584088193 1.3473e-09 deg/d
Q 2.563742919299717 8.6783e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1320  
   data-arc span      9993 days (27.36 yr)  
   first obs. used      1994-02-03  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54823  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 02:50:48  

Additional Information
 Earth MOID = 1.22239 au 
 Jupiter MOID = 2.46649 au 
 T_jup = 3.520 
[ 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 15.22   n/a E2021B10  
diameter diameter 3.275 km 0.286 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.150   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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