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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02394329450247984 4.9628e-08  
a 3.173777037335628 3.0986e-08 au
q 3.097786359045493 1.6379e-07 au
i 6.980107666781756 6.8127e-06 deg
node 5.948413190894001 4.0424e-05 deg
peri 287.8777647881678 0.00015129 deg
M 342.1641552647128 0.00014795 deg
tp 2457702.818515295640
(2016-Nov-10.31851530)
0.00084893 JED
period 2065.204426990503
5.65
3.0245e-05
8.281e-08
d
yr
n .1743168837404664 2.5529e-09 deg/d
Q 3.249767715625762 3.1728e-08 au
  Orbit Determination Parameters
   # obs. used (total)      933  
   data-arc span      12541 days (34.34 yr)  
   first obs. used      1981-02-09  
   last obs. used      2015-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55584  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:59:06  

Additional Information
 Earth MOID = 2.09145 au 
 Jupiter MOID = 1.80242 au 
 T_jup = 3.189 
[ 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 13.7 mag n/a MPO337326  
rotation period rot_per 32.25 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 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 2016-Apr-30 11:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin