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7160 Tokunaga (1981 UQ29)
Classification: Main-belt Asteroid          SPK-ID: 2007160
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2026997365108033 4.9336e-08  
a 2.466729099588905 1.3675e-08 AU
q 1.966723761058703 1.2367e-07 AU
i 1.259230075392822 5.321e-06 deg
node 251.2438550700126 0.00040593 deg
peri 180.5400311945874 0.00040671 deg
M 166.7247311042401 2.4778e-05 deg
tp 2456345.142705893793
(2013-Feb-21.64270589)
9.7403e-05 JED
period 1415.078760755215
3.87
1.1767e-05
3.222e-08
d
yr
n .254402800737304 2.1155e-09 deg/d
Q 2.966734438119107 1.6447e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1213  
   data-arc span      23326 days (63.86 yr)  
   first obs. used      1950-08-14  
   last obs. used      2014-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53099  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:09:12  

Additional Information
 Earth MOID = .980981 AU 
 T_jup = 3.458 
[ 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 13.3 mag n/a MPO259391  

7160 Tokunaga           Discovered 1981 Oct. 24 by S. J. Bus at Palomar.
University of Hawaii astronomer Alan T. Tokunaga (b. 1949) specializes in studies of star formation and solar system astronomy and in the development of infrared instrumentation. Since Apr. 2000 he has served as division chief for the NASA Infrared Telescope Facility on Mauna Kea.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050721/MPCPages.arcLast Updated: 2005-07-21

Alternate Designations
 1981 UQ29 = 1971 DX1 = 1971 FP = 1977 TT5 = 1981 SC5 = 1983 ET1 = 1994 AR 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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