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236616 Gray (2006 JR61)
Classification: Main-belt Asteroid          SPK-ID: 2236616
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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04586647048375956 1.7782e-07  
a 2.640667737450819 5.2442e-08 AU
q 2.519549628613615 4.7997e-07 AU
i 1.964667441893933 1.5628e-05 deg
node 34.17327908124222 0.00026313 deg
peri 27.93317843945174 0.00031601 deg
M 106.5644074096644 0.00017244 deg
tp 2456336.541923210542
(2013-Feb-13.04192321)
0.00075078 JED
period 1567.36110774879
4.29
4.669e-05
1.278e-07
d
yr
n .2296854236207699 6.8422e-09 deg/d
Q 2.761785846288022 5.4848e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      6732 days (18.43 yr)  
   first obs. used      1995-11-28  
   last obs. used      2014-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60632  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-12 02:19:24  

Additional Information
 Earth MOID = 1.5312 AU 
 T_jup = 3.393 
[ 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 16.9 mag n/a MPO248495  

236616 Gray           Discovered 2006 May 1 by P. A. Wiegert at Mauna Kea.
David Frank Gray (b. 1938) is a stellar spectroscopist who has advanced our knowledge of stellar rotation, magnetic fields,granulation and turbulence, oscillations and star spots. He was President of IAU Commission 36 from 1988 to 1991 and Director of the Elginfield Observatory in London (Canada) from 1991 to 2011.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-08-21Last Updated: 2013-08-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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