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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02503369830707017 3.3308e-08  
a 3.173010254632738 1.6639e-08 au
q 3.093578073193022 1.1231e-07 au
i 6.980439650676396 4.3535e-06 deg
node 5.920335791700899 2.65e-05 deg
peri 290.5338468379082 8.8134e-05 deg
M 292.4046108946528 8.4601e-05 deg
tp 2459784.132526606122
(2022-Jul-23.63252661)
0.00048523 TDB
period 2064.456043898486
5.65
1.6238e-05
4.446e-08
d
yr
n .1743800751117867 1.3716e-09 deg/d
Q 3.252442436072454 1.7055e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1611  
   data-arc span      14735 days (40.34 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51369  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 01:32:29  

Additional Information
 Earth MOID = 2.08699 au 
 Jupiter MOID = 1.80396 au 
 T_jup = 3.190 
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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 13.82   n/a MPO614063  
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. 2020-October); 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 18:23 00:03 Jupiter 1.84752280865521 1.84752228719305 1.84752333011747 3.14920415086215 3.00009316271352 2417104.266295713 2.74842607798659 40.3965349949255 25.065453512061 -64.066709181896 3841306.6311634 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 01:32:37 2021-Jul-08 01:32
1916-Jun-14 08:23 00:02 Jupiter 1.80804971120428 1.80804933230435 1.80805009010452 3.60607512228833 3.47373455299877 2421028.849593105 2.38933313044173 104.04532450147 14.7841227477677 -88.2821879228905 3693570.64509874 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 01:32:37 2021-Jul-08 01:32
1927-Mar-21 01:37 00:02 Jupiter 1.91195101125636 1.91195037596851 1.91195164654466 4.03817975708837 3.92694107902652 2424960.567142692 2.09699306992824 75.3744424666601 21.5502774284421 -74.279382453931 3955964.9874928 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 01:32:37 2021-Jul-08 01:32
2013-Sep-22 05:03 < 00:01 Jupiter 1.9733567864811 1.97335642603563 1.97335714692658 3.18711070391016 3.04946160502369 2456557.710595801 0.184870177533274 38.7953134872811 10.389827693984 -73.4759999018913 4857379.22772102 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 01:32:37 2021-Jul-08 01:32
2024-Jun-13 16:20 < 00:01 Jupiter 1.8603488907074 1.86034853247575 1.86034924893916 3.10124433413658 2.95078130905255 2460475.180387337 0.332424263030355 39.0557415033844 9.16165029463581 -73.7098916714643 4319381.27315669 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 01:32:37 2021-Jul-08 01:32
2035-Mar-11 09:23 < 00:01 Jupiter 1.8167311696708 1.81673079417212 1.81673154516957 3.57699664504722 3.44418876660719 2464397.890732909 0.578008615390356 49.2787925872712 13.1994200572078 -81.070858448644 3699307.57112417 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 01:32:37 2021-Jul-08 01:32
2045-Dec-15 03:57 < 00:01 Jupiter 1.9076516103048 1.90765110984384 1.90765211076586 4.06853719218137 3.9578995020435 2468329.664528440 0.828277539838645 52.4798776273451 20.8481315400852 -80.3606483492195 3927241.76579371 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 01:32:37 2021-Jul-08 01:32
2132-Jun-24 00:35 00:03 Jupiter 1.97896452033932 1.97896376097321 1.97896527970521 3.22372162110595 3.08809894932468 2499931.524229296 2.96187910964488 38.4509758255522 28.1532408224755 -79.4766667674058 2125523.81880979 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 01:32:37 2021-Jul-08 01:32
2143-Mar-17 16:42 00:03 Jupiter 1.87374758927153 1.87374693752544 1.87374824101773 3.06135488652693 2.90994831063987 2503850.196035688 3.31797324717355 40.7688546251282 29.0328475162163 -55.7334413819792 4432606.13730037 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 01:32:37 2021-Jul-08 01:32
2153-Dec-10 19:47 00:04 Jupiter 1.82660019760722 1.82659981739697 1.82660057781768 3.53373622868676 3.39997957000208 2507771.324290728 3.50883928059711 122.177338241066 15.6671674731242 89.0699683338082 3644225.72421566 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 01:32:37 2021-Jul-08 01:32
2164-Sep-15 10:45 00:04 Jupiter 1.90222249576616 1.90222145467513 1.90222353686076 4.08122401951875 3.9706206787025 2511702.948090276 3.69978580270114 155.967244871258 20.8487081250804 -74.1755302613048 3985162.7202894 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 01:32:37 2021-Jul-08 01:32
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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