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155142 Tenagra (2005 UD4)
Classification: Main-belt Asteroid          SPK-ID: 2155142
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08426397783462451 1.5153e-07  
a 2.761857852785468 7.9372e-08 AU
q 2.52913272389597 4.6663e-07 AU
i .0802195498294072 1.0677e-05 deg
node 319.7384176295405 0.0080405 deg
peri 44.77144510625605 0.0080402 deg
M 356.1867555049832 7.1288e-05 deg
tp 2456818.257939085634
(2014-Jun-09.75793909)
0.0003324 JED
period 1676.487851534956
4.59
7.227e-05
1.979e-07
d
yr
n .2147346308954114 9.2568e-09 deg/d
Q 2.994582981674966 8.606e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      151  
   data-arc span      4678 days (12.81 yr)  
   first obs. used      2000-09-21  
   last obs. used      2013-07-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58668  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 09:30:27  

Additional Information
 Earth MOID = 1.52544 AU 
 T_jup = 3.336 
[ 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 16.6 mag n/a MPO266504  

155142 Tenagra           Discovered 2005 Oct. 26 by J.-C. Merlin at Tenagra II.
Tenagra was a mythical island in an episode of Star Trek. It is an exploration of how far people can go in the spirit of cooperation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070730/MPCPages.arcLast Updated: 2007-08-07

[ show close-approach data ]
Alternate Designations
 2005 UD4 = 2005 WB53 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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