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4179 Toutatis (1989 AC)
Classification: Apollo [NEO, PHA]          SPK-ID: 2004179
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 565 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6242486422939808 1.4577e-09  
a 2.545398024633949 4.4649e-10 au
q .9564367636584257 3.8515e-09 au
i .447949067883831 1.901e-07 deg
node 125.199409013313 2.4048e-05 deg
peri 277.9899154266488 2.3554e-05 deg
M 311.2833559557808 2.2432e-07 deg
tp 2459201.227485156355
(2020-Dec-17.72748516)
9.7673e-07 TDB
period 1483.310192522639
4.06
3.9029e-07
1.069e-09
d
yr
n .2427004154726089 6.3859e-11 deg/d
Q 4.134359285609473 7.2522e-10 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -4.10654180341824E-13 9.313E-14
A2 [EST] -6.487713850460045E-15 1.041E-15
  Orbit Determination Parameters
   # obs. used (total)      6348  
   # delay obs. used      35  
   # Doppler obs. used      28  
   data-arc span      31761 days (86.96 yr)  
   first obs. used      1934-02-10  
   last obs. used      2021-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .26695  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-26 05:17:41  

Additional Information
 Earth MOID = .00657948 au 
 Jupiter MOID = 1.28945 au 
 T_jup = 3.137 
[ 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 15.2   n/a MPO473823  
magnitude slope G 0.10   n/a PDS3 (MPC 28111) Fit
diameter diameter 5.4 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15)
extent extent 1.70x2.03x4.26 km 0.08 Hudson et al. (2003) Icarus 161:346-355 dynamically equivalent, equal volume ellipsoid
rotation period rot_per 176. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Nakamura, T.; Fuse, T. (1998) Pub. Astron. Soc. Japan 50, 531-536.]
[Pravec, P.; et al. (2005) Icarus 173, 108-131.]
geometric albedo albedo 0.405   0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
SMASSII spectral type spec_B Sk   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4179 Toutatis (1989 AC)          Discovered 1989-Jan-04 by Pollas, C. at Caussols
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ 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
1903-Jan-24 10:55 < 00:01 Earth 0.409560123078232 0.4095587822624 0.409561463894063 27.7833992473268 27.7831650881718 2416138.954589127 0.0997201077781808 66.8668945774912 0.658701881174192 0.788167790325886 1475299.79086164 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1906-Oct-02 14:37 < 00:01 Earth 0.154537659204345 0.154537077332759 0.154538241075966 12.3343408465605 12.3329429124791 2417486.109209872 0.347663027096519 29.1953900506555 0.114223080939619 -6.37312614192918 21187495.0934239 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1922-Mar-30 19:54 < 00:01 Venus 0.0887053233461565 0.0887052550022387 0.0887053916904222 8.01644231600401 8.01338795522699 2423144.329458648 0.100855571576696 9.41491022775761 0.199299849913796 68.8202469600777 63677611.7713216 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1933-Dec-09 17:01 < 00:01 Earth 0.106214371785722 0.106213880077806 0.106214863493638 12.1010209433298 12.0989477287045 2427416.209348471 0.185273742323671 24.5295967927757 0.387095156567402 1.57622245239719 1342962.01551035 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1937-Aug-23 23:45 < 00:01 Earth 0.191374769515627 0.191374154696529 0.191375384334725 20.0856187479515 20.0849255616763 2428769.489717262 0.0611827293371873 30.665667042702 0.232712190327039 1.28674397483942 2699419.84271778 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1947-May-21 19:16 < 00:01 Jupiter 1.77482353716831 1.77482342953491 1.77482364480172 5.63157419218113 5.5461825992309 2432327.302934491 0.050691228469872 5.28811758092699 2.37833984815171 10.2146900242114 26213526.8189833 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1959-Mar-06 17:23 < 00:01 Jupiter 1.59561946709996 1.59561940195231 1.59561953224761 4.94135175884566 4.83272928519405 2436634.224327896 0.0382559846724241 3.09459328671301 2.64290267412011 -2.64558608578846 36778222.6968092 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1971-Jan-04 20:09 < 00:01 Jupiter 1.51522542393199 1.5152253752269 1.51522547263707 4.60671669608829 4.48372875335944 2440956.339850841 0.0278835684991808 2.93881793986309 1.57883501919166 -50.9018034824577 55434807.4873311 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1981-Jan-12 23:45 < 00:01 Earth 0.376506749123649 0.376506658105742 0.376506840141556 24.0861938005313 24.0858999854639 2444617.489360683 0.00753027324662126 4.58703608894389 0.262987190034913 -8.34318470491 31045216.3684918 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1982-Nov-22 04:38 < 00:01 Jupiter 1.51536844482736 1.51536838924372 1.515368500411 4.51352525909545 4.38793808055222 2445295.693379042 0.0204125077211643 3.31302839281267 0.853545433854566 -42.7325824048536 77665006.787497 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1985-Jan-05 17:00 < 00:01 Earth 0.282452249313659 0.28245217999925 0.282452318628068 20.6310416541894 20.6305844070724 2446071.207989975 0.00643085581418763 3.53112067412191 0.23716967706929 -11.8367385819995 35485237.978788 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1988-Dec-26 00:05 < 00:01 Earth 0.116929706216793 0.116929670557435 0.116929741876151 15.6008011379964 15.5993404383331 2447521.503387143 0.0044122638066543 1.94152251274922 0.17622828630183 -23.7778187723205 38556340.4330471 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1992-Dec-08 05:36 < 00:01 Earth 0.0241504186710337 0.0241504175757547 0.024150419766314 11.1874853586213 11.1776192304096 2448964.733419599 0.000412590337626842 0.861459577829347 0.0539721084343174 89.4365463377964 68143618.5458914 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1994-Oct-29 12:10 < 00:01 Jupiter 1.60075946959276 1.60075938945231 1.60075954973321 4.65855534216701 4.54355170119809 2449655.006891074 0.0149599295699753 4.3333576621478 0.737224356199131 -32.0999265240642 71979847.9119409 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
1996-Nov-29 22:53 < 00:01 Earth 0.0354323415619214 0.0354323377218742 0.0354323454019726 10.1840327752422 10.1766460789239 2450417.453327179 0.00117481761920883 0.843344137950944 0.147732558923994 -81.5667953496587 35830013.4623529 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2000-Oct-31 04:28 < 00:01 Earth 0.0738647921187182 0.0738647819807673 0.0738648022566692 9.70614618645801 9.7024290267792 2451848.686256905 0.00395972469124487 0.810235266357365 0.0764022359362502 -51.7251140546597 104304008.165368 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2004-Sep-29 13:37 < 00:01 Earth 0.0103571912159013 0.0103571767278426 0.0103572057039923 10.998296282876 10.9748805633734 2453278.067040502 0.000693571568819015 1.16347439934307 0.0187875701354745 -51.6203806972731 67041291.4817601 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2006-Oct-10 02:33 < 00:01 Jupiter 1.7336362699439 1.73363616944309 1.73363637044472 5.09219135045655 4.99532279812141 2454018.606417555 0.0173993592196279 5.1219475182176 1.01547693673463 -22.949183118376 46675969.840429 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2008-Nov-09 12:22 < 00:01 Earth 0.0502479026246252 0.0502478952820239 0.0502479099672294 9.20807609609518 9.20231558011769 2454780.015325221 0.00173704177440443 0.733034313479251 0.0944773794833568 -60.8894862833076 63629230.0506653 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2012-Dec-12 06:40 < 00:01 Earth 0.046332042293695 0.0463320387553637 0.0463320458320263 11.9132291454109 11.9084008989299 2456273.777842077 0.0010782844382575 0.688808933874825 0.144307377015958 -81.3274163757804 43849541.6693512 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2016-Dec-29 14:15 < 00:01 Earth 0.251196372597805 0.251196369503683 0.251196375691927 18.3353963620826 18.3348178458599 2457752.094000578 0.00154006919424738 0.676647217370358 0.152505334197165 87.9652866976658 256714728.956703 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2065-Sep-05 06:23 < 00:01 Earth 0.364429763583499 0.364429092691298 0.364430434475699 20.4439982425001 20.4436406104097 2475533.766090000 0.0647374732535407 33.4616600992202 0.114339188247567 1.22240344704537 9101421.93277496 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2069-Nov-05 15:50 < 00:01 Earth 0.0198486726500955 0.0198486194357988 0.0198487258644012 8.40638828464926 8.39040431952585 2477056.159525448 0.315602438332382 2.73501984350923 0.29793194561631 -14.106335076018 2620486.55534429 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2074-Jan-04 01:51 < 00:01 Earth 0.43338916094241 0.433389048571778 0.433389273313043 22.5507573632886 22.5504847319322 2478576.576933165 0.00866338552454319 5.62607526233081 0.788843519560581 5.19986371778379 12104790.4747373 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2112-Aug-28 12:26 < 00:01 Jupiter 1.79620217855369 1.79620007636555 1.79620428074213 5.06099134470711 4.96694144923743 2492692.018011051 0.601381276588107 111.032272180777 1.82258047479112 -23.862253846462 26759826.3327166 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2124-Sep-18 10:25 < 00:01 Jupiter 1.51269040732365 1.51268838150175 1.5126924331465 4.33625110083279 4.20513790717251 2497095.933712291 0.727663861527074 116.434458820716 1.47396863508325 -34.9080700304896 38020929.3238923 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2136-Sep-18 22:45 < 00:01 Jupiter 1.36899714425697 1.36899550311378 1.36899878540186 4.00513603297155 3.84755501660225 2501479.447690346 0.84947512465992 112.730133230549 1.06352335781312 -47.8074183650925 58449264.6821381 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2148-Sep-03 03:35 00:01 Jupiter 1.30796535125179 1.30796404542826 1.30796665707822 3.89838180041137 3.72856606368463 2505846.649165822 1.06420233781811 119.376110121732 0.722293271562416 -60.2469513023606 92096963.4759024 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2160-Aug-07 12:05 00:01 Jupiter 1.28537777582841 1.28537677188062 1.28537877978175 3.87087094523332 3.69671561678153 2510203.003376771 1.466580135313 144.811853596441 0.490664440710326 -72.2347099700824 151630491.351523 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2172-Jul-07 08:09 00:02 Jupiter 1.27822905556633 1.27822817852769 1.27822993261731 3.86315757083921 3.68763882561563 2514554.839322749 2.25531219795476 207.40816836453 0.6135352822376 -79.4277125307792 330623267.391595 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2184-Jun-04 02:01 00:04 Jupiter 1.27958526545349 1.27958472038805 1.27958581054847 3.85594587253416 3.68027402944192 2518904.584358727 3.64789826909889 315.140028556448 0.598598356084097 -86.2609548283213 872373231.027777 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17
2196-Apr-29 02:02 00:06 Jupiter 1.27893881810306 1.27893856752534 1.27893906875319 3.85843191319751 3.68278780471697 2523251.584426508 5.95516909056007 492.240654165185 0.732615933021488 87.8948229004425 544832104.060175 T 565 CATAB v2.0f-lin.ifort 2021-Jan-26 05:17:51 2021-Jan-26 05:17

Alternate Designations
 1989 AC = 1934 CT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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