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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 537 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6242486422911399 1.458e-09  
a 2.5453980246778 4.466e-10 au
q .9564367636821342 3.8524e-09 au
i .4479490692821854 1.9014e-07 deg
node 125.1994092358397 2.4053e-05 deg
peri 277.989915205971 2.3559e-05 deg
M 311.2833559381037 2.2437e-07 deg
tp 2459201.227485234377
(2020-Dec-17.72748523)
9.7696e-07 TDB
period 1483.31019256097
4.06
3.9038e-07
1.069e-09
d
yr
n .2427004154663372 6.3874e-11 deg/d
Q 4.134359285673467 7.2538e-10 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -4.108769179061709E-13 9.314E-14
A2 [EST] -6.483352560362494E-15 1.041E-15
  Orbit Determination Parameters
   # obs. used (total)      6208  
   # delay obs. used      35  
   # Doppler obs. used      28  
   data-arc span      31692 days (86.77 yr)  
   first obs. used      1934-02-10  
   last obs. used      2020-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .26721  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-26 05:21:23  

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. 2019-August); 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 0.409560123665029 0.409558782581769 0.409561464748289 27.7833992636499 27.7831651044954 2416138.954589087 0.0997392649014261 66.8802304946412 0.65872926529728 0.788073426686566 1475041.57043621 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1906-Oct-02 14:37 < 00:01 Earth 0.154537659568885 0.154537077581396 0.154538241556401 12.3343408404436 12.3329429063649 2417486.109209943 0.347732238699459 29.2012071034547 0.114229500409299 -6.37316082942982 21186415.6124077 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1922-Mar-30 19:54 < 00:01 Venus 0.088705323178982 0.0887052548207695 0.0887053915375425 8.01644230982511 8.01338794903999 2423144.329458833 0.100877116389655 9.41694893388004 0.199303796467139 68.8203991331615 63676606.0434604 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1933-Dec-09 17:01 < 00:01 Earth 0.106214370160231 0.106213878339166 0.106214861981295 12.1010209753151 12.0989477606635 2427416.209348780 0.18531610084676 24.5352413392204 0.387132914967779 1.57621591889371 1342781.46518562 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1937-Aug-23 23:45 < 00:01 Earth 0.191374767135895 0.191374152175168 0.191375382096622 20.0856186972137 20.0849255109281 2428769.489716897 0.0611965909703643 30.6727313626819 0.232737558981367 1.2867474211055 2699097.83875212 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1947-May-21 19:16 < 00:01 Jupiter 1.77482353777907 1.77482343013265 1.77482364542549 5.63157416943222 5.54618257616135 2432327.302936443 0.0507017812773866 5.28882716944787 2.37876569830841 10.2194934217283 26211322.802076 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1959-Mar-06 17:23 < 00:01 Jupiter 1.5956194674775 1.59561940232559 1.59561953262941 4.94135182480517 4.83272935266208 2436634.224322279 0.0382639667158644 3.09480020399601 2.64350692492208 -2.6385196405507 36776027.8463475 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1971-Jan-04 20:09 < 00:01 Jupiter 1.51522542406371 1.51522537535458 1.51522547277285 4.60671685967873 4.48372892144797 2440956.339834941 0.0278894123483041 2.93934840259782 1.57896064017734 -50.9087091759294 55433516.6773873 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1981-Jan-12 23:45 < 00:01 Earth 0.37650674917069 0.376506658132067 0.376506840209314 24.0861937879174 24.0858999728498 2444617.489360444 0.00753191933095587 4.58807979570045 0.263003065883747 -8.34316359764365 31042593.8239374 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1982-Nov-22 04:38 < 00:01 Jupiter 1.51536844481201 1.51536838921855 1.51536850040547 4.51352537587805 4.38793820067597 2445295.693367632 0.0204169304788614 3.3137077784052 0.853556091909355 -42.7341834966134 77664636.9137896 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1985-Jan-05 17:00 < 00:01 Earth 0.282452249275949 0.282452179945982 0.282452318605916 20.6310416218396 20.6305843747218 2446071.207989488 0.00643224410787633 3.53191276961925 0.237184151034485 -11.8366929930328 35482434.0772848 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1988-Dec-26 00:05 < 00:01 Earth 0.11692970628076 0.116929670613466 0.116929741948054 15.600801157249 15.5993404575883 2447521.503387504 0.0044132147631259 1.94195222577085 0.176240783778019 -23.777620269837 38553171.6831699 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1992-Dec-08 05:36 < 00:01 Earth 0.0241504185519463 0.0241504174566577 0.0241504196472349 11.1874853625515 11.1776192342947 2448964.733419628 0.00041259567075317 0.861642508952963 0.0539720555634751 89.4364579855733 68143682.9483609 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1994-Oct-29 12:10 < 00:01 Jupiter 1.60075946959873 1.60075938944017 1.60075954975728 4.65855531088353 4.54355166912321 2449655.006893809 0.0149633524372876 4.33434038436339 0.737282252495944 -32.0998401508874 71972841.0211546 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
1996-Nov-29 22:53 < 00:01 Earth 0.0354323415649689 0.0354323377246256 0.0354323454053161 10.184032788812 10.1766460925042 2450417.453326772 0.00117481717336932 0.843524235319495 0.147732626888661 -81.56705176159 35829989.7421036 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2000-Oct-31 04:28 < 00:01 Earth 0.0738647921253136 0.0738647819850827 0.0738648022655444 9.70614618067718 9.70242902099649 2451848.686256385 0.0039606216508718 0.810417503147236 0.0764063797089869 -51.7250059618719 104298495.646185 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2004-Sep-29 13:37 < 00:01 Earth 0.0103571911116507 0.0103571766202964 0.0103572056030373 10.9982962861677 10.9748805664362 2453278.067040334 0.000693601516482631 1.16374054498521 0.0187876872314744 -51.6204345760446 67040986.5577098 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2006-Oct-10 02:33 < 00:01 Jupiter 1.73363626984186 1.7336361693168 1.73363637036691 5.09219142146783 4.99532287050398 2454018.606412016 0.0174035003605893 5.12318035655157 1.01559358496055 -22.9489956478264 46669328.8810996 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2008-Nov-09 12:22 < 00:01 Earth 0.0502479026237153 0.0502478952794773 0.0502479099679561 9.20807609335836 9.20231557737905 2454780.015325439 0.0017372503314723 0.733196480148567 0.0944834811567079 -60.8891557816563 63624880.2815337 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2012-Dec-12 06:40 < 00:01 Earth 0.0463320422976804 0.0463320387590989 0.0463320458362619 11.9132291438423 11.9084008973611 2456273.777842041 0.00107835993498985 0.688947329704863 0.144313751968935 -81.3281402117712 43847198.6088881 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2016-Dec-29 14:15 < 00:01 Earth 0.251196373340172 0.25119637024585 0.251196376434493 18.3353964281172 18.3348179118984 2457752.094001159 0.00154030657228647 0.676771367307405 0.152516241302952 87.966303137757 256702851.291341 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2065-Sep-05 06:23 < 00:01 Earth 0.364429756357027 0.364429085306076 0.364430427407977 20.4439980240032 20.4436403919019 2475533.766090489 0.0647529522451097 33.4695782016084 0.114349231895149 1.22239899508067 9100558.84984891 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2069-Nov-05 15:50 < 00:01 Earth 0.0198486722683319 0.0198486190412835 0.0198487254953894 8.40638828787461 8.39040432244963 2477056.159527511 0.315677440322663 2.73567731317886 0.297963823686536 -14.1064875850316 2620172.31187195 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2074-Jan-04 01:51 < 00:01 Earth 0.433389158995806 0.433389046598988 0.433389271392625 22.550757327933 22.5504846965749 2478576.576933303 0.00866504195610589 5.62738709628152 0.788932154128273 5.19987718688133 12102407.4169112 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2112-Aug-28 12:26 < 00:01 Jupiter 1.7962021995037 1.79620009681268 1.79620430219492 5.06099124154017 4.96694134522434 2492692.017995165 0.601522864616909 111.058804196735 1.82259057126138 -23.8622206529615 26759368.6013181 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2124-Sep-18 10:25 < 00:01 Jupiter 1.51269042806975 1.51268840176372 1.51269245437664 4.33625111560219 4.20513792422863 2497095.933703272 0.727835033022671 116.462234929319 1.4739728294345 -34.9080347468929 38020468.2797704 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2136-Sep-18 22:45 < 00:01 Jupiter 1.36899716140596 1.36899551987079 1.36899880294277 4.00513602388922 3.84755500916234 2501479.447675650 0.849675035773978 112.756992873188 1.06353122598812 -47.8073864774125 58448761.993008 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2148-Sep-03 03:35 00:01 Jupiter 1.30796536511143 1.30796405897598 1.30796667124984 3.89838189809548 3.72856616765812 2505846.649174357 1.06445355836662 119.404540871812 0.722317674119524 -60.2469275303236 92096313.759544 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2160-Aug-07 12:05 00:01 Jupiter 1.2853777866191 1.28537678243114 1.28537879081254 3.87087097134581 3.69671564562067 2510203.003359154 1.46692772497204 144.846359835586 0.490698252868851 -72.2346922966128 151629535.689854 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2172-Jul-07 08:09 00:02 Jupiter 1.27822906511098 1.2782281878601 1.27822994237414 3.86315760438638 3.68763886210133 2514554.839300947 2.25584946430033 207.457734376043 0.613603941979377 -79.427676081323 330621866.626833 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2184-Jun-04 02:01 00:04 Jupiter 1.27958527143236 1.27958472623213 1.27958581666212 3.85594591556154 3.68027407536356 2518904.584325417 3.64877021809811 315.215504689817 0.59865362290684 -86.2609169271884 872356820.660551 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21
2196-Apr-29 02:02 00:06 Jupiter 1.27893881546275 1.27893856483472 1.27893906616319 3.85843194773824 3.68278784053381 2523251.584383446 5.95659480495851 492.35870030726 0.732665421069015 87.8948745975989 544819422.905353 T 537 CATAB v2.0f-lin.ifort 2020-Nov-26 05:21:36 2020-Nov-26 05:21

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