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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08412097264213857 1.0959e-07  
a 2.761457722263644 3.9929e-08 AU
q 2.529161212756681 3.0653e-07 AU
i .08020384979585436 8.1692e-06 deg
node 319.698353786867 0.0079878 deg
peri 44.81796017090621 0.0079875 deg
M 39.13809312109859 5.2353e-05 deg
tp 2456818.277002555051
(2014-Jun-09.77700255)
0.00024409 JED
period 1676.1235371689
4.59
3.6354e-05
9.953e-08
d
yr
n .2147813046096038 4.6584e-09 deg/d
Q 2.993754231770606 4.3288e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      200  
   data-arc span      5174 days (14.17 yr)  
   first obs. used      2000-09-21  
   last obs. used      2014-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57917  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 08:16:33  

Additional Information
 Earth MOID = 1.52696 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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