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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 527 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6242486422860892 1.4582e-09  
a 2.54539802462666 4.4664e-10 au
q .9564367636757741 3.853e-09 au
i .4479490704575259 1.9016e-07 deg
node 125.199409396877 2.4055e-05 deg
peri 277.9899150496004 2.3561e-05 deg
M 311.2833559514254 2.2439e-07 deg
tp 2459201.227485173438
(2020-Dec-17.72748517)
9.7707e-07 TDB
period 1483.310192516267
4.06
3.9042e-07
1.069e-09
d
yr
n .2427004154736514 6.388e-11 deg/d
Q 4.134359285577546 7.2546e-10 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -4.109562191031552E-13 9.314E-14
A2 [EST] -6.478057585531011E-15 1.042E-15
  Orbit Determination Parameters
   # obs. used (total)      6167  
   # delay obs. used      35  
   # Doppler obs. used      28  
   data-arc span      31659 days (86.68 yr)  
   first obs. used      1934-02-10  
   last obs. used      2020-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .26512  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-16 08:06:26  

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 0.409560123700962 0.409558782473337 0.409561464928586 27.7833992752204 27.783165116066 2416138.954589436 0.0997495456179502 66.8874283493767 0.658745824039156 0.788015061394262 1474890.38362061 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1906-Oct-02 14:37 < 00:01 Earth 0.15453765947159 0.154537077421722 0.154538241521492 12.3343407638577 12.3329428297694 2417486.109209320 0.347769523202436 29.2043384697339 0.114231817895825 -6.37318177233948 21186048.7279167 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1922-Mar-30 19:54 < 00:01 Venus 0.0887053234181583 0.0887052550523316 0.0887053917843329 8.01644234264509 8.0133879818807 2423144.329457670 0.100888685685972 9.41804608221919 0.199307441900869 68.8205057972517 63675534.5244303 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1933-Dec-09 17:01 < 00:01 Earth 0.106214373732729 0.106213881851387 0.106214865614071 12.1010209557352 12.09894774115 2427416.209347622 0.185338656840289 24.5382478609215 0.387134393485699 1.57618805138747 1342717.72658718 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1937-Aug-23 23:45 < 00:01 Earth 0.191374772161053 0.191374157125347 0.19137538719676 20.0856188323166 20.0849256460539 2428769.489716963 0.0612039806710493 30.6764712824229 0.232738267403666 1.28673818665434 2699038.50874779 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1947-May-21 19:16 < 00:01 Jupiter 1.77482353645547 1.77482342880562 1.77482364410532 5.63157421389978 5.54618262124938 2432327.302932596 0.0507074461914177 5.28905496531666 2.37897918596602 10.2233974527478 26211127.7422624 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1959-Mar-06 17:23 < 00:01 Jupiter 1.5956194665565 1.59561940140431 1.59561953170868 4.94135174638062 4.83272927241143 2436634.224328795 0.0382682534410084 3.09480928592786 2.64384568730518 -2.63342008991329 36775889.5989544 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1971-Jan-04 20:09 < 00:01 Jupiter 1.51522542344731 1.5152253747368 1.51522547215782 4.60671689318829 4.48372895582598 2440956.339831436 0.0278925702849609 2.93962341680562 1.57901346209978 -50.9134709824467 55433440.3293237 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1981-Jan-12 23:45 < 00:01 Earth 0.37650674805229 0.376506657002623 0.376506839101957 24.0861937500831 24.0858999350142 2444617.489360311 0.00753278622733539 4.58863754642655 0.263003451672683 -8.34322412307986 31042249.9201618 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1982-Nov-22 04:38 < 00:01 Jupiter 1.51536844443407 1.51536838883536 1.51536850003278 4.51352524387889 4.38793806486709 2445295.693380424 0.0204193612049998 3.31408033363711 0.853562932123551 -42.7351214348084 77664562.4748484 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1985-Jan-05 17:00 < 00:01 Earth 0.282452248582798 0.282452179244499 0.282452317921098 20.6310415660415 20.6305843189214 2446071.207988910 0.00643297797322667 3.53233768460438 0.237184393837855 -11.8367331728581 35482116.585268 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1988-Dec-26 00:05 < 00:01 Earth 0.116929705943466 0.116929670271925 0.116929741615014 15.6008011300882 15.5993404304207 2447521.503387132 0.00441371535804092 1.94218350397724 0.176240958534116 -23.7775844238114 38552912.1057164 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1992-Dec-08 05:36 < 00:01 Earth 0.0241504183466911 0.0241504172514012 0.024150419441981 11.187485369849 11.1776192415147 2448964.733419611 0.000412599053965856 0.861742973663527 0.0539720663905628 89.4364873714618 68143639.4787655 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1994-Oct-29 12:10 < 00:01 Jupiter 1.60075946950945 1.60075938934079 1.6007595496781 4.65855538370661 4.54355174378306 2449655.006887456 0.0149652831490701 4.33488967554767 0.737283371929877 -32.0998378619587 71971990.950229 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
1996-Nov-29 22:53 < 00:01 Earth 0.0354323415505094 0.0354323377099385 0.0354323453910842 10.1840327847624 10.1766460884486 2450417.453326928 0.00117481775168572 0.843624637508929 0.147732775149102 -81.566868544866 35829920.7370125 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2000-Oct-31 04:28 < 00:01 Earth 0.0738647921039247 0.0738647819623881 0.0738648022454656 9.70614618013332 9.70242902045135 2451848.686256350 0.00396110870772196 0.810520678152802 0.0764066212802231 -51.7248456479669 104297903.934688 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2004-Sep-29 13:37 < 00:01 Earth 0.0103571911456654 0.0103571766524072 0.0103572056389561 10.9982962843587 10.9748805647003 2453278.067040354 0.000693623137223039 1.1638935615105 0.0187876915176988 -51.620436648689 67040974.0436984 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2006-Oct-10 02:33 < 00:01 Jupiter 1.73363626965505 1.73363616911679 1.73363637019331 5.09219139362415 4.99532284210983 2454018.606414146 0.0174058285930457 5.12386307050417 1.01559629908186 -22.9491679029116 46668325.357624 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2008-Nov-09 12:22 < 00:01 Earth 0.0502479026075577 0.0502478952623657 0.0502479099527525 9.20807608832665 9.20231557234234 2454780.015325858 0.0017373473179318 0.733287688976702 0.0944841527418724 -60.8887668122989 63624166.0923483 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2012-Dec-12 06:40 < 00:01 Earth 0.0463320422439344 0.0463320387052791 0.0463320457825896 11.9132291481148 11.9084009016297 2456273.777842231 0.00107836753260823 0.689020210432669 0.144314348784532 -81.3286335397973 43846996.4837696 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2016-Dec-29 14:15 < 00:01 Earth 0.251196372885622 0.251196369791286 0.251196375979958 18.3353963818486 18.3348178656272 2457752.094000746 0.00154035067788083 0.67683159974735 0.152518683226734 87.9672850717401 256700599.423832 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2065-Sep-05 06:23 < 00:01 Earth 0.364429761535482 0.364429090401474 0.36443043266949 20.4439981973653 20.4436405652721 2475533.766089936 0.0647610312303709 33.4737213736447 0.114349507541151 1.22240247835426 9100534.28027776 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2069-Nov-05 15:50 < 00:01 Earth 0.0198486724893349 0.0198486192555975 0.0198487257230813 8.40638828422254 8.39040431896874 2477056.159526142 0.315716771929302 2.73602543537926 0.297966192421875 -14.1068323748362 2620153.42754318 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2074-Jan-04 01:51 < 00:01 Earth 0.433389160631085 0.433389048221037 0.433389273041134 22.5507573736811 22.5504847423246 2478576.576933380 0.00866592659886064 5.62805225675424 0.788937083275466 5.20023569197264 12101615.4892469 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2112-Aug-28 12:26 < 00:01 Jupiter 1.79620218461111 1.79620008166108 1.79620428756144 5.06099117803077 4.96694127972521 2492692.017996198 0.601597456542672 111.072473076202 1.82259294324901 -23.8621993578114 26759337.2978689 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2124-Sep-18 10:25 < 00:01 Jupiter 1.5126904131152 1.51268838655905 1.51269243967221 4.33625098636752 4.2051377896481 2497095.933697763 0.727925163825939 116.47658226523 1.47397701522337 -34.9080098566782 38020415.1138494 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2136-Sep-18 22:45 < 00:01 Jupiter 1.36899714892599 1.36899550718811 1.3689987906655 4.00513600284779 3.84755498579318 2501479.447682113 0.849780209186478 112.770865604555 1.06353725120966 -47.8073595260242 58448660.8557338 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2148-Sep-03 03:35 00:01 Jupiter 1.30796535495343 1.30796404865681 1.30796666125303 3.89838186562368 3.72856613235854 2505846.649179205 1.06458538108963 119.419210078962 0.722324896152907 -60.2469066701005 92096159.9069974 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2160-Aug-07 12:05 00:01 Jupiter 1.2853777786701 1.28537677435851 1.28537878298723 3.87087093966729 3.69671561134737 2510203.003365396 1.46710944231277 144.864137436163 0.490704534246379 -72.2346823456322 151629360.318653 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2172-Jul-07 08:09 00:02 Jupiter 1.27822905804242 1.27822818068532 1.27822993541187 3.86315757835223 3.68763883383434 2514554.839315312 2.25612795007521 207.483121343608 0.613607955599003 -79.4276906846025 330621502.063741 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2184-Jun-04 02:01 00:04 Jupiter 1.27958526698635 1.27958472172212 1.27958581228012 3.85594588483446 3.68027404254482 2518904.584342672 3.64921903396095 315.253994071031 0.598655995104802 -86.260938761383 872359728.342396 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07
2196-Apr-29 02:02 00:06 Jupiter 1.27893881739333 1.27893856672801 1.27893906813106 3.8584319252498 3.68278781724427 2523251.584411671 5.95732583171165 492.418759841101 0.732667261713493 87.8948389882125 544813437.648831 T 527 CATAB v2.0f-lin.ifort 2020-Oct-16 08:06:40 2020-Oct-16 08:07

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