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

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02462181264768915 4.2802e-08  
a 3.175547645511966 2.2077e-08 au
q 3.097359906330361 1.3473e-07 au
i 6.977941384660991 5.5741e-06 deg
node 5.936610577727324 3.2579e-05 deg
peri 288.8266095864345 0.00011275 deg
M 155.4044150087042 0.00010857 deg
tp 2457708.248619038165
(2016-Nov-15.74861904)
0.00062343 TDB
period 2066.932893304668
5.66
2.1555e-05
5.901e-08
d
yr
n .1741711117792616 1.8163e-09 deg/d
Q 3.253735384693572 2.2621e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1168  
   data-arc span      13861 days (37.95 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53554  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 18:55:09  

Additional Information
 Earth MOID = 2.0906 au 
 Jupiter MOID = 1.80216 au 
 T_jup = 3.189 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO337326  
diameter diameter 11.042 km 0.217 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 32.25 h n/a LCDB (Rev. 2019-January); 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.]
geometric albedo albedo 0.048   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 Científicas 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1905-Sep-15 18:24 00:03 Jupiter 1.84752282376477 1.84752209169995 1.8475235558296 3.14920256953968 3.00009150320151 2417104.266928006 3.35385074289557 50.7244719587639 34.2474819631412 -61.5801190705019 3379129.98212142 T 22 CATAB v2.0e-lin.ifort 2019-Jul-12 18:55:13 2019-Jul-12 18:55
1916-Jun-14 08:24 00:03 Jupiter 1.80804954163508 1.80804906395107 1.8080500193196 3.60607410778276 3.47373348644998 2421028.850112119 2.91212800827576 132.273926242142 18.6616062232105 -88.2628710671382 2963374.43002342 T 22 CATAB v2.0e-lin.ifort 2019-Jul-12 18:55:13 2019-Jul-12 18:55
1927-Mar-21 01:37 00:03 Jupiter 1.91195078004481 1.91194988899578 1.9119516710946 4.03817961481167 3.92694091845373 2424960.567583614 2.55022660282904 96.628649012526 28.5686735976497 -71.7890796751014 2994584.88497452 T 22 CATAB v2.0e-lin.ifort 2019-Jul-12 18:55:13 2019-Jul-12 18:55
2013-Sep-22 05:03 < 00:01 Jupiter 1.97335673182867 1.97335626126765 1.97335720238979 3.18711004749807 3.04946091430609 2456557.710707440 0.229911829866664 49.7442053709989 13.9195034364076 -73.569822506706 3778553.98360603 T 22 CATAB v2.0e-lin.ifort 2019-Jul-12 18:55:13 2019-Jul-12 18:55
2024-Jun-13 16:20 < 00:01 Jupiter 1.86034877550973 1.86034834559462 1.86034920542494 3.10124309817132 2.95077999965726 2460475.180450149 0.453515801612725 49.2679942493748 10.1826873800585 -73.92280705017 3488410.81346575 T 22 CATAB v2.0e-lin.ifort 2019-Jul-12 18:55:13 2019-Jul-12 18:55
2035-Mar-11 09:23 < 00:01 Jupiter 1.81673102196767 1.81673054797974 1.8167314959557 3.5769960112821 3.44418809665061 2464397.890781735 0.761503392031514 59.346194989788 16.3831524402673 -80.1587448562753 2961591.97659142 T 22 CATAB v2.0e-lin.ifort 2019-Jul-12 18:55:13 2019-Jul-12 18:55
2045-Dec-15 03:57 00:01 Jupiter 1.90765151212296 1.90765092151571 1.90765210273021 4.0685373286185 3.95789963590098 2468329.664571495 1.073497801994 62.7142453105586 25.4483676935709 -83.3091549808309 3081163.21383125 T 22 CATAB v2.0e-lin.ifort 2019-Jul-12 18:55:13 2019-Jul-12 18:55
2132-Jun-24 00:35 00:04 Jupiter 1.97896446907711 1.97896365147269 1.97896528668143 3.22372114444369 3.0880984473725 2499931.524356586 3.7402268053444 48.8822824988496 29.682372720422 -75.0143064376189 2008641.28734246 T 22 CATAB v2.0e-lin.ifort 2019-Jul-12 18:55:13 2019-Jul-12 18:55
2143-Mar-17 16:42 00:04 Jupiter 1.87374750277432 1.87374677750447 1.87374822804428 3.0613535775337 2.90994692550947 2503850.196171226 4.17195250042481 51.5208510553015 32.974928518897 -59.9403254687582 3427154.7842964 T 22 CATAB v2.0e-lin.ifort 2019-Jul-12 18:55:13 2019-Jul-12 18:55
2153-Dec-10 19:47 00:04 Jupiter 1.82660005541267 1.82659957593881 1.82660053488685 3.53373531638346 3.3999786104376 2507771.324432715 4.4048370897027 148.359357259348 19.8205108127273 89.0211341230421 2931247.83619815 T 22 CATAB v2.0e-lin.ifort 2019-Jul-12 18:55:13 2019-Jul-12 18:55
2164-Sep-15 10:45 00:05 Jupiter 1.9022223376688 1.9022211311359 1.90222354420679 4.08122396875524 3.97062061658495 2511702.948263873 4.64186072964462 189.969013670379 26.6282804804585 -75.313440092479 3084092.6340845 T 22 CATAB v2.0e-lin.ifort 2019-Jul-12 18:55:13 2019-Jul-12 18:55
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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