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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02490696201711699 4.216e-08  
a 3.17454265502805 1.9181e-08 au
q 3.095474441697549 1.3432e-07 au
i 6.978987318175007 4.9793e-06 deg
node 5.920400171388688 3.2006e-05 deg
peri 289.4455918056752 0.00010497 deg
M 224.4620795337325 0.00010199 deg
tp 2459778.318904922255
(2022-Jul-17.81890492)
0.00058664 TDB
period 2065.951763231469
5.66
1.8724e-05
5.126e-08
d
yr
n .1742538264479633 1.5793e-09 deg/d
Q 3.253610868358551 1.9659e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1316  
   data-arc span      14240 days (38.99 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52178  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:51:51  

Additional Information
 Earth MOID = 2.0894 au 
 Jupiter MOID = 1.80304 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-August); 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

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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 1.84752302144689 1.84752242183429 1.84752362105959 3.14920372878565 3.00009273641563 2417104.266727274 3.04725159852018 49.685731453438 29.2626362359337 -68.162521077558 3680950.93804393 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 18:52:02 2020-Feb-22 18:52
1916-Jun-14 08:24 00:03 Jupiter 1.80804967961399 1.80804921271523 1.80805014651358 3.60607505829186 3.47373448346288 2421028.849925110 2.64748591607256 121.943395880507 16.8258507807245 -86.917661307057 3312871.09637816 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 18:52:02 2020-Feb-22 18:52
1927-Mar-21 01:37 00:02 Jupiter 1.91195080465769 1.91194994882079 1.91195166049512 4.03817994405633 3.92694125847719 2424960.567421709 2.32023189281014 88.3991134414333 28.4214180657751 -71.5503705014845 3117263.68977317 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 18:52:02 2020-Feb-22 18:52
2013-Sep-22 05:03 < 00:01 Jupiter 1.97335694440604 1.97335651182787 1.9733573769842 3.18711110975222 3.04946203967188 2456557.710627831 0.196984119495181 44.5922575979534 12.9534798685232 -73.8339479190987 4017691.8763089 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 18:52:02 2020-Feb-22 18:52
2024-Jun-13 16:20 < 00:01 Jupiter 1.86034900833023 1.86034861211176 1.86034940454892 3.10124413059995 2.95078110404076 2460475.180402482 0.366571058737536 48.9023398286079 9.38315706977866 -74.111573591611 4098884.89284367 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 18:52:02 2020-Feb-22 18:52
2035-Mar-11 09:23 < 00:01 Jupiter 1.81673114972374 1.8167307057897 1.81673159365789 3.57699676275922 3.44418888662406 2464397.890735389 0.644580093698754 56.9480448715253 15.8907723763669 -81.3137933106784 3280341.69592459 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 18:52:02 2020-Feb-22 18:52
2045-Dec-15 03:57 < 00:01 Jupiter 1.90765147336791 1.90765091655118 1.90765203018463 4.0685375167954 3.95789982705903 2468329.664546532 0.926289663283058 60.6902547430131 24.2765567797244 -85.2727500345428 3211821.01793607 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 18:52:02 2020-Feb-22 18:52
2132-Jun-24 00:35 00:03 Jupiter 1.97896472503625 1.97896394714468 1.9789655029277 3.2237224578157 3.08809983635159 2499931.524438860 3.29840668522424 43.0441312897881 28.5625385264487 -77.2769354645356 2076166.75801006 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 18:52:02 2020-Feb-22 18:52
2143-Mar-17 16:43 00:04 Jupiter 1.87374776874978 1.87374705860471 1.87374847889486 3.06135453568577 2.90994795556591 2503850.196275159 3.69061709236367 50.2725065501226 31.6695567335533 -61.7018347246927 4173299.08896718 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 18:52:02 2020-Feb-22 18:52
2153-Dec-10 19:47 00:04 Jupiter 1.82660018324144 1.82659973353109 1.82660063295178 3.53373576998252 3.39997909142611 2507771.324545887 3.9046622288569 133.892100878908 19.3167693154076 88.2505856722797 3256998.19288967 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 18:52:02 2020-Feb-22 18:52
2164-Sep-15 10:46 00:04 Jupiter 1.90222224887398 1.90222117680029 1.90222332095167 4.08122395041469 3.97062059249869 2511702.948387503 4.12010896278832 172.233927752413 26.0379804128718 -76.0916783570673 3210517.98335481 T 25 CATAB v2.0f-lin.ifort 2020-Feb-22 18:52:02 2020-Feb-22 18:52
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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