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
JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06872889264424378 2.876e-08  
a 2.398060437190303 8.463e-09 au
q 2.233244398848242 6.9933e-08 au
i 4.4873424140895 4.2013e-06 deg
node 195.8540801619234 4.4615e-05 deg
peri 68.755241040055 5.8077e-05 deg
M 321.10378937358 3.921e-05 deg
tp 2459347.052558827826
(2021-May-12.55255883)
0.00014809 TDB
period 1356.402598822341
3.71
7.1803e-06
1.966e-08
d
yr
n .2654079255764918 1.405e-09 deg/d
Q 2.562876475532363 9.0446e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55138  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:02:57  

Additional Information
 Earth MOID = 1.22073 au 
 Jupiter MOID = 2.46825 au 
 T_jup = 3.520 
[ 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 15.22   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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-13 17:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin