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51772 Sparker (2001 MJ)
Classification: Main-belt Asteroid          SPK-ID: 2051772
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1879210508292453 7.8049e-08  
a 2.685199375577743 3.7302e-08 AU
q 2.180593887233141 2.0758e-07 AU
i 11.01155011779535 8.3642e-06 deg
node 261.0388337728587 4.2351e-05 deg
peri 79.32349614284071 4.7838e-05 deg
M 346.7253102486467 2.5992e-05 deg
tp 2457059.763201916990
(2015-Feb-06.26320192)
0.00011676 JED
period 1607.175240230497
4.40
3.349e-05
9.169e-08
d
yr
n .2239954866081497 4.6675e-09 deg/d
Q 3.189804863922346 4.4312e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      550  
   data-arc span      9062 days (24.81 yr)  
   first obs. used      1988-09-10  
   last obs. used      2013-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5845  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 08:10:20  

Additional Information
 Earth MOID = 1.20447 AU 
 T_jup = 3.323 
[ 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 13.9 mag n/a MPO266193  

51772 Sparker           Discovered 2001 June 16 by R. Dyvig at Badlands Observatory.
Steve Parker (b. 1951) is currently director of Hidden Valley Observatory, which is operated by the Black Hills Astronomical Society in Rapid City, South Dakota. He has extensive knowledge and skill in construction techniques, and his voluntary effort was instrumental in the rebuilding of Badlands Observatory after a fire in 1998.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090806/MPCPages.arcLast Updated: 2011-05-09

[ show close-approach data ]
Alternate Designations
 2001 MJ = 1988 RC8 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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