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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 526 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6242486422868923 1.4582e-09  
a 2.545398024640635 4.4665e-10 au
q .956436763678981 3.853e-09 au
i .4479490697959537 1.9017e-07 deg
node 125.1994092905343 2.4055e-05 deg
peri 277.9899151529464 2.3561e-05 deg
M 311.2833559501156 2.2439e-07 deg
tp 2459201.227485180488
(2020-Dec-17.72748518)
9.7708e-07 TDB
period 1483.310192528483
4.06
3.9042e-07
1.069e-09
d
yr
n .2427004154716527 6.3881e-11 deg/d
Q 4.134359285602288 7.2547e-10 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -4.107825218534811E-13 9.314E-14
A2 [EST] -6.478555602873616E-15 1.042E-15
  Orbit Determination Parameters
   # obs. used (total)      6164  
   # delay obs. used      35  
   # Doppler obs. used      28  
   data-arc span      31600 days (86.52 yr)  
   first obs. used      1934-02-10  
   last obs. used      2020-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .26506  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-18 06:07:19  

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 0.409560124394694 0.40955878315247 0.409561465636918 27.7833992797912 27.7831651206372 2416138.954588907 0.0997505842002878 66.8881572646699 0.658747515710681 0.788009162582085 1474875.06935295 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1906-Oct-02 14:37 < 00:01 Earth 0.15453765971615 0.154537077659939 0.154538241772387 12.3343407873884 12.332942853305 2417486.109209606 0.347773308470254 29.2046565547852 0.114232072160921 -6.37318382305748 21186007.7598458 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1922-Mar-30 19:54 < 00:01 Venus 0.0887053233747045 0.0887052550080812 0.0887053917416757 8.01644232838078 8.01338796760946 2423144.329458159 0.100889897913186 9.41816096290351 0.19930775533841 68.8205175227148 63675454.3277183 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1933-Dec-09 17:01 < 00:01 Earth 0.106214372658518 0.106213880770642 0.106214864546394 12.1010209761334 12.0989477615308 2427416.209347803 0.185341099499504 24.5385738471587 0.387134290524718 1.57618758504105 1342713.13648976 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1937-Aug-23 23:45 < 00:01 Earth 0.191374770787019 0.191374155743115 0.191375385830923 20.0856187919094 20.0849256056403 2428769.489717010 0.0612047816728128 30.6768801466576 0.23273822289665 1.28673831409168 2699035.42828969 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1947-May-21 19:16 < 00:01 Jupiter 1.77482353676628 1.77482342911602 1.77482364441653 5.63157423004751 5.5461826376608 2432327.302931488 0.050708041070434 5.28908267741973 2.37899880722185 10.2238328994148 26211102.7635372 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1959-Mar-06 17:23 < 00:01 Jupiter 1.59561946672504 1.59561940157285 1.59561953187722 4.94135183726665 4.83272936535186 2436634.224320878 0.0382687026822768 3.09481015033096 2.64388011427164 -2.63253113794661 36775873.881399 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1971-Jan-04 20:09 < 00:01 Jupiter 1.5152254235656 1.51522537485501 1.5152254722762 4.60671672848906 4.48372878661881 2440956.339847551 0.0278928968659105 2.93964895624278 1.57901979284379 -50.9139963137074 55433435.7157119 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1981-Jan-12 23:45 < 00:01 Earth 0.376506748508616 0.376506657457729 0.376506839559503 24.086193797036 24.085899981968 2444617.489360905 0.00753288076479697 4.58869854941366 0.263003428282864 -8.34321569374641 31042170.9415723 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1982-Nov-22 04:38 < 00:01 Jupiter 1.51536844455797 1.51536838895874 1.5153685001572 4.5135252307922 4.38793805141627 2445295.693381740 0.0204196098113387 3.31411634507966 0.853563661790584 -42.7352273976855 77664569.319823 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1985-Jan-05 17:00 < 00:01 Earth 0.282452248941954 0.282452179602755 0.282452318281152 20.6310416261328 20.6305843790146 2446071.207989696 0.006433056701327 3.53238337861445 0.23718440284057 -11.8367207443503 35482040.1242589 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1988-Dec-26 00:05 < 00:01 Earth 0.116929706083477 0.116929670411477 0.116929741755477 15.6008011311188 15.5993404314531 2447521.503387079 0.00441376900244804 1.94220788036172 0.176241014917882 -23.7775538587192 38552838.6446327 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1992-Dec-08 05:36 < 00:01 Earth 0.0241504184804905 0.0241504173851992 0.0241504195757818 11.1874853665678 11.1776192382853 2448964.733419538 0.0004125999385854 0.861752702470082 0.0539720677050296 89.4364681941619 68143648.8021054 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1994-Oct-29 12:10 < 00:01 Jupiter 1.60075946947291 1.60075938930325 1.60075954964257 4.65855545790787 4.5435518198598 2449655.006880985 0.0149654768188785 4.33494469677229 0.737283420583974 -32.0998272819075 71971888.5531501 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
1996-Nov-29 22:53 < 00:01 Earth 0.0354323414785938 0.0354323376380129 0.0354323453191767 10.1840327901573 10.1766460938324 2450417.453326806 0.00117481730266146 0.843634205662617 0.147732713961449 -81.5669103838015 35829939.4520219 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2000-Oct-31 04:28 < 00:01 Earth 0.0738647921050872 0.0738647819634162 0.0738648022467582 9.70614618793564 9.70242902825671 2451848.686257002 0.00396116402973512 0.810530980018168 0.0764066506075513 -51.7248231907039 104297831.023421 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2004-Sep-29 13:37 < 00:01 Earth 0.0103571909729279 0.0103571764794773 0.0103572054664102 10.9982962915872 10.9748805715533 2453278.067040314 0.000693625294060553 1.16390900905434 0.0187876917722673 -51.6204374723221 67040973.0485577 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2006-Oct-10 02:33 < 00:01 Jupiter 1.73363626967989 1.73363616914025 1.73363637021953 5.09219134390114 4.99532279142399 2454018.606418011 0.0174060651974279 5.12393267588698 1.01559640741451 -22.9491701068276 46668205.7954092 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2008-Nov-09 12:22 < 00:01 Earth 0.0502479026132426 0.0502478952679563 0.0502479099585317 9.20807609511812 9.20231557913871 2454780.015325248 0.00173735646482085 0.73329668436255 0.0944842312560298 -60.8887208141988 63624082.8748913 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2012-Dec-12 06:40 < 00:01 Earth 0.0463320422889214 0.0463320387502609 0.046332045827582 11.9132291438226 11.9084008973404 2456273.777842065 0.00107836805116851 0.689027218880374 0.144314422816493 -81.3286892013299 43846971.1738316 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2016-Dec-29 14:15 < 00:01 Earth 0.251196372945186 0.25119636985085 0.251196376039523 18.3353964042651 18.3348178880446 2457752.094000997 0.0015403549470934 0.676837332449758 0.152518405520064 87.9672631980993 256701187.916184 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2065-Sep-05 06:23 < 00:01 Earth 0.364429760371619 0.364429089229348 0.364430431513891 20.4439981934057 20.4436405613113 2475533.766089652 0.0647618397028103 33.4741331618429 0.114349530195097 1.22240268140922 9100531.12121955 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2069-Nov-05 15:50 < 00:01 Earth 0.0198486724466005 0.0198486192121795 0.0198487256810306 8.40638828512934 8.39040431984281 2477056.159526459 0.315720700450948 2.73606097370642 0.297966412940654 -14.1068662783015 2620151.46702003 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2074-Jan-04 01:51 < 00:01 Earth 0.433389160200105 0.433389047788776 0.43338927261146 22.550757334245 22.5504847028877 2478576.576933066 0.00866601036257945 5.62811779012156 0.788937462924757 5.20026389061259 12101533.0336558 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2112-Aug-28 12:26 < 00:01 Jupiter 1.79620218786177 1.7962000848857 1.79620429083815 5.06099128294002 4.96694138679275 2492692.018002835 0.601604855537581 111.073844250206 1.82259313926318 -23.8621952916478 26759334.074347 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2124-Sep-18 10:25 < 00:01 Jupiter 1.51269041639772 1.51268838981646 1.51269244297984 4.33625103507104 4.20513784015912 2497095.933700996 0.72793409412219 116.478017187213 1.47397748308194 -34.9080057600623 38020408.9792097 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2136-Sep-18 22:45 < 00:01 Jupiter 1.36899715165693 1.36899550989881 1.36899879341675 4.00513602781301 3.84755501210166 2501479.447683881 0.849790621407911 112.772251178019 1.06353795094443 -47.8073557120804 58448648.7488507 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2148-Sep-03 03:35 00:01 Jupiter 1.30796535715789 1.30796405084513 1.30796666347362 3.89838186613825 3.72856613318928 2505846.649176272 1.06459843432881 119.420674917937 0.722325676704964 -60.246903431864 92096142.7445532 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2160-Aug-07 12:05 00:01 Jupiter 1.28537778037197 1.28537677604797 1.28537878470153 3.8708709669039 3.69671564010314 2510203.003375576 1.46712746837884 144.865913511966 0.490705180196022 -72.2346807536499 151629284.88122 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2172-Jul-07 08:09 00:02 Jupiter 1.27822905954808 1.27822818217972 1.27822993692879 3.86315758386915 3.68763883982551 2514554.839312230 2.25615583386236 207.485681978595 0.613608768626607 -79.4276845566767 330621354.108868 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2184-Jun-04 02:01 00:04 Jupiter 1.2795852679303 1.27958472265864 1.27958581323148 3.85594589008128 3.68027404817478 2518904.584346308 3.64926436132879 315.25791397773 0.59865667347157 -86.2609333694022 872357536.906705 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07
2196-Apr-29 02:02 00:06 Jupiter 1.27893881699011 1.27893856632326 1.27893906772936 3.85843193303596 3.68278782534509 2523251.584401980 5.95739988790068 492.424883926524 0.732667421626662 87.8948475356233 544814530.352633 T 526 CATAB v2.0f-lin.ifort 2020-Aug-18 06:07:52 2020-Aug-18 06:07

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