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8568 Larrywilson (1996 RU2)
Classification: Main-belt Asteroid          SPK-ID: 2008568
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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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.

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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1014238733337739 3.7369e-08  
a 2.156981481437935 9.5261e-09 au
q 1.938212064881278 7.9104e-08 au
i .8739959000565919 5.2057e-06 deg
node 44.72653161513556 0.00029984 deg
peri 242.4200661548761 0.00030129 deg
M 152.0874786820031 3.2517e-05 deg
tp 2457111.668694420395
0.00010393 JED
period 1157.092428211068
n .3111246700979462 2.0611e-09 deg/d
Q 2.375750897994592 1.0492e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1095  
   data-arc span      8169 days (22.37 yr)  
   first obs. used      1993-09-19  
   last obs. used      2016-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52112  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:30:26  

Additional Information
 Earth MOID = .921749 au 
 Jupiter MOID = 2.72907 au 
 T_jup = 3.693 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2 mag n/a MPO256927  
rotation period rot_per 11.29 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

8568 Larrywilson           Discovered 1996 Sept. 10 by the Near-Earth Asteroid Tracking program.
Named in honor of Lawrence (Larry) Wilson, whom discoverer E. F. Helin has known since his childhood. As the editor of the Pasadena Star News, he has been supportive of the discoverer's work at Caltech's Jet Propulsion Laboratory.
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

Alternate Designations
 1996 RU2 = 1993 TE48 = 1995 DV12 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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