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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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0841209868028113 1.4163e-07  
a 2.761457712529472 7.0683e-08 AU
q 2.529161164737259 4.2972e-07 AU
i .08020655427681582 1.0532e-05 deg
node 319.6994150399675 0.0080434 deg
peri 44.81689465852372 0.0080431 deg
M 39.13809996819678 6.7564e-05 deg
tp 2456818.276971639163
(2014-Jun-09.77697164)
0.00031122 JED
period 1676.123528306367
4.59
6.4354e-05
1.762e-07
d
yr
n .2147813057452637 8.2465e-09 deg/d
Q 2.993754260321686 7.6629e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      155  
   data-arc span      5122 days (14.02 yr)  
   first obs. used      2000-09-21  
   last obs. used      2014-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58431  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 18:19:42  

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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