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 ]  
8325 Trigo-Rodriguez (1981 EM26)
Classification: Main-belt Asteroid          SPK-ID: 2008325
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02283464792414195 5.6462e-08  
a 3.178296081468942 3.6184e-08 AU
q 3.105720809449918 1.7709e-07 AU
i 6.973537893839823 7.472e-06 deg
node 5.985052813283069 4.2453e-05 deg
peri 284.576023258218 0.00017646 deg
M 206.014066525016 0.00017415 deg
tp 2457685.755237502978
(2016-Oct-24.25523750)
0.0010034 JED
period 2069.616868951511
5.67
3.5343e-05
9.676e-08
d
yr
n .1739452385611737 2.9705e-09 deg/d
Q 3.250871353487965 3.701e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      816  
   data-arc span      12099 days (33.13 yr)  
   first obs. used      1981-02-09  
   last obs. used      2014-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .6119  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:54:19  

Additional Information
 Earth MOID = 2.09916 AU 
 T_jup = 3.188 
[ 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 13.6 mag n/a MPO256926  
rotation period rot_per 32.25 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Masiero, J.; Jedicke, R.; Durecy, J.; Gwyn, S.; et al. (2009) Icarus 204, 145-171.]

8325 Trigo-Rodriguez           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Josep Maria Trigo-Rodriguez (b. 1970) is a Consejo Superior de Investigaciones Cient{í}ficas research scientist at the Institute of Space Studies of Catalonia. His investigations include compositions and orbits of meteoroids and their relationships to minor planets and comets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-18 08:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin