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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08352869396576486 1.0055e-07  
a 2.764759699754484 3.4904e-08 au
q 2.533822932904812 2.7308e-07 au
i .07804332828471572 7.9391e-06 deg
node 319.4163928911414 0.0059786 deg
peri 46.00508411114588 0.0059784 deg
M 166.9812384592506 4.5431e-05 deg
tp 2456821.657415109211
(2014-Jun-13.15741511)
0.00020856 JED
period 1679.130740362234
4.60
3.1798e-05
8.706e-08
d
yr
n .2143966466377349 4.06e-09 deg/d
Q 2.995696466604157 3.782e-08 au
  Orbit Determination Parameters
   # obs. used (total)      232  
   data-arc span      5637 days (15.43 yr)  
   first obs. used      2000-09-21  
   last obs. used      2016-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58848  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 22:11:22  

Additional Information
 Earth MOID = 1.53065 au 
 Jupiter MOID = 2.40326 au 
 T_jup = 3.335 
[ 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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