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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08412093640506572 1.516e-07  
a 2.761457745607185 7.9024e-08 AU
q 2.529161334203687 4.6654e-07 AU
i .0802056019603109 1.0675e-05 deg
node 319.6994576995324 0.0080437 deg
peri 44.81686724387112 0.0080435 deg
M 39.13807573612065 7.2407e-05 deg
tp 2456818.277081187159
(2014-Jun-09.77708119)
0.00033274 JED
period 1676.123558422164
4.59
7.1948e-05
1.97e-07
d
yr
n .2147813018861746 9.2196e-09 deg/d
Q 2.993754157010684 8.5672e-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 = 1.52696 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-Sep-20 14:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin