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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08385506351212457 1.0973e-07  
a 2.76308476802077 3.9303e-08 au
q 2.531386119309004 3.0636e-07 au
i .07971787518836516 8.1768e-06 deg
node 319.8352778199905 0.0080312 deg
peri 45.10015322677153 0.008031 deg
M 124.6221575377466 5.2359e-05 deg
tp 2456819.758977396004
(2014-Jun-11.25897740)
0.00024475 JED
period 1677.605108659065
4.59
3.5795e-05
9.8e-08
d
yr
n .2145916211996716 4.5787e-09 deg/d
Q 2.994783416732536 4.2599e-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 = 1.52732 au 
 Jupiter MOID = 2.40225 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-09 20:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin