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7166 Kennedy (1985 TR)
Classification: Main-belt Asteroid          SPK-ID: 2007166
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1357301076545112 2.8137e-08  
a 2.429045066326188 7.6854e-09 au
q 2.099350517976075 6.9729e-08 au
i 3.701700000383346 4.1605e-06 deg
node 14.01622732716699 5.2706e-05 deg
peri 64.38666754938713 5.5301e-05 deg
M 260.8156992175529 1.6156e-05 deg
tp 2458981.471265657256
(2020-May-11.97126566)
6.2252e-05 TDB
period 1382.77584813991
3.79
6.5625e-06
1.797e-08
d
yr
n .2603458835965835 1.2356e-09 deg/d
Q 2.7587396146763 8.7285e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1860  
   data-arc span      23891 days (65.41 yr)  
   first obs. used      1954-06-30  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48132  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 21:40:14  

Additional Information
 Earth MOID = 1.11775 au 
 Jupiter MOID = 2.47204 au 
 T_jup = 3.493 
[ 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 13.7   n/a MPO452269  
diameter diameter 5.129 km 0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.659 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.267   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7166 Kennedy           Discovered 1985 Oct. 15 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Named in memory of Malcolm Kennedy (1944-1997), tireless and popular secretary of the Astronomical Society of Glasgow. Born and raised in New Zealand, Kennedy became a civil engineer in Scotland. He was an energetic member of the Free Church in Cumbernauld, near Glasgow. As secretary of the ASG, he ensured that meetings ran smoothly, enlivening them with wordplay and puns.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980808/MPCPages.arcLast Updated: 2009-11-17

[ show close-approach data ]
Alternate Designations
 1985 TR = 1976 JA10 = 1991 HC5 = 1992 OZ8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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