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236616 Gray (2006 JR61)
Classification: Main-belt Asteroid          SPK-ID: 2236616
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04370295986294447 4.61e-08  
a 2.640473633539335 2.1373e-08 au
q 2.525077120313602 1.3427e-07 au
i 1.961601413020927 4.523e-06 deg
node 34.03172316280958 0.00016411 deg
peri 30.07684793839094 0.00018109 deg
M 340.495020803731 7.9524e-05 deg
tp 2459481.411041981023
(2021-Sep-23.91104198)
0.00034659 TDB
period 1567.188296156479
4.29
1.9028e-05
5.21e-08
d
yr
n .2297107507010473 2.789e-09 deg/d
Q 2.755870146765067 2.2307e-08 au
  Orbit Determination Parameters
   # obs. used (total)      293  
   data-arc span      9091 days (24.89 yr)  
   first obs. used      1995-11-28  
   last obs. used      2020-10-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53108  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 01:16:25  

Additional Information
 Earth MOID = 1.53786 au 
 Jupiter MOID = 2.36515 au 
 T_jup = 3.393 
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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 16.72   n/a MPCxxxxx  

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: 2014-08-13

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