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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 | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0687445818892557 2.8762e-08  
a 2.398426199267202 8.4959e-09 au
q 2.233547393006341 6.9947e-08 au
i 4.486963584869494 4.201e-06 deg
node 195.8553482975659 4.4619e-05 deg
peri 68.62083661618357 5.8068e-05 deg
M 268.157359076616 3.9063e-05 deg
tp 2459346.622497484273
(2021-May-12.12249748)
0.00014805 TDB
period 1356.712936840353
3.71
7.2088e-06
1.974e-08
d
yr
n .2653472154827413 1.4099e-09 deg/d
Q 2.563305005528062 9.08e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1297  
   data-arc span      9625 days (26.35 yr)  
   first obs. used      1994-02-03  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55144  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:56:10  

Additional Information
 Earth MOID = 1.22275 au 
 Jupiter MOID = 2.46869 au 
 T_jup = 3.520 
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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 MPO400119  
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

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