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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02490696054643401 4.1919e-08  
a 3.174542653528198 1.8512e-08 au
q 3.095474444903799 1.3399e-07 au
i 6.978987487011122 4.8755e-06 deg
node 5.92040165549094 3.1428e-05 deg
peri 289.4455943468076 0.00010373 deg
M 224.462076030622 0.00010114 deg
tp 2459778.318924474513
(2022-Jul-17.81892447)
0.00058201 TDB
period 2065.951761767342
5.66
1.8071e-05
4.948e-08
d
yr
n .1742538265714558 1.5242e-09 deg/d
Q 3.253610862152597 1.8973e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1409  
   data-arc span      14323 days (39.21 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51751  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:56:23  

Additional Information
 Earth MOID = 2.0894 au 
 Jupiter MOID = 1.80304 au 
 T_jup = 3.189 
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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 1.84752303908198 1.84752246939091 1.84752360877316 3.14920376343217 3.00009277424283 2417104.266764871 2.98183341368094 49.3651895853057 28.0549655708069 -69.1391180602536 3767086.61770291 T 26 CATAB v2.0f-lin.ifort 2020-May-20 02:56:35 2020-May-20 02:56
1916-Jun-14 08:24 00:03 Jupiter 1.80804968195371 1.80804921681262 1.80805014709563 3.60607506464532 3.47373449023292 2421028.849960638 2.59106036515184 119.424294441244 16.4105057663946 -86.6199565555124 3431041.62560797 T 26 CATAB v2.0f-lin.ifort 2020-May-20 02:56:35 2020-May-20 02:56
1927-Mar-21 01:37 00:02 Jupiter 1.91195079379888 1.91194994651427 1.91195164108403 4.03817993025505 3.92694124364425 2424960.567452851 2.27119177477162 86.305510330436 28.2193322805491 -71.3422061551012 3158532.55753609 T 26 CATAB v2.0f-lin.ifort 2020-May-20 02:56:35 2020-May-20 02:56
2013-Sep-22 05:03 < 00:01 Jupiter 1.97335695378909 1.97335652890393 1.97335737867424 3.18711112683881 3.04946205819902 2456557.710620693 0.18986666177826 43.7244847974275 12.7103617543188 -73.8915689186521 4082574.46532309 T 26 CATAB v2.0f-lin.ifort 2020-May-20 02:56:35 2020-May-20 02:56
2024-Jun-13 16:20 < 00:01 Jupiter 1.86034901524489 1.86034862506212 1.86034940542777 3.10124420440447 2.95078118218215 2460475.180388576 0.346913451370323 48.8397990050935 9.19841332690132 -74.0939544083168 4281869.86829054 T 26 CATAB v2.0f-lin.ifort 2020-May-20 02:56:35 2020-May-20 02:56
2035-Mar-11 09:23 < 00:01 Jupiter 1.8167311549165 1.81673071644581 1.81673159338729 3.57699684509353 3.44418897252009 2464397.890719500 0.618889312209768 55.9452334340288 15.8060403020692 -81.531362318265 3372785.37372372 T 26 CATAB v2.0f-lin.ifort 2020-May-20 02:56:35 2020-May-20 02:56
2045-Dec-15 03:57 < 00:01 Jupiter 1.9076514810436 1.90765092990411 1.90765203218308 4.06853753901806 3.95789985035428 2468329.664533322 0.894164677188607 59.8152071217112 24.0631671362215 -85.5358999241817 3243400.23493071 T 26 CATAB v2.0f-lin.ifort 2020-May-20 02:56:35 2020-May-20 02:56
2132-Jun-24 00:35 00:03 Jupiter 1.97896471924238 1.97896394839906 1.97896549008559 3.22372243737169 3.08809981460394 2499931.524387667 3.20304436871338 41.8793341053906 28.3484100852089 -77.9624926475154 2087697.58701847 T 26 CATAB v2.0f-lin.ifort 2020-May-20 02:56:35 2020-May-20 02:56
2143-Mar-17 16:43 00:04 Jupiter 1.87374776403232 1.87374705610138 1.87374847196337 3.06135463450729 2.90994805913807 2503850.196203128 3.58690728831428 50.1821970138579 31.3925953633464 -62.0946364797422 4402155.17575116 T 26 CATAB v2.0f-lin.ifort 2020-May-20 02:56:35 2020-May-20 02:56
2153-Dec-10 19:47 00:04 Jupiter 1.82660018838893 1.82659974406893 1.82660063270893 3.53373592063074 3.39997924838525 2507771.324478820 3.79697463931571 130.670594180884 19.1624186662845 88.0407807960873 3366327.44024104 T 26 CATAB v2.0f-lin.ifort 2020-May-20 02:56:35 2020-May-20 02:56
2164-Sep-15 10:46 00:04 Jupiter 1.90222227324391 1.90222122802702 1.90222331846458 4.08122404582074 3.97062069199903 2511702.948318560 4.00781783021694 168.347667050695 25.8968585778451 -76.2416257596011 3247046.26950064 T 26 CATAB v2.0f-lin.ifort 2020-May-20 02:56:35 2020-May-20 02:56
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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