Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08412094218362275 1.1874e-07  
a 2.761457740827664 4.9724e-08 AU
q 2.529161313868982 3.4275e-07 AU
i .08021172915472632 9.7918e-06 deg
node 319.6996995136826 0.00804 deg
peri 44.81662370199862 0.0080398 deg
M 39.1380785339489 5.6644e-05 deg
tp 2456818.277068633840
(2014-Jun-09.77706863)
0.00026294 JED
period 1676.12355407062
4.59
4.5271e-05
1.239e-07
d
yr
n .2147813024437887 5.8011e-09 deg/d
Q 2.993754167786345 5.3906e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      5152 days (14.11 yr)  
   first obs. used      2000-09-21  
   last obs. used      2014-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59426  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 16:48:38  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Nov-29 06:17 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin