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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 604 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6241657037998426 1.3431e-09  
a 2.54487329114079 5.1975e-10 au
q .9564506622944769 3.5912e-09 au
i .4481414036085226 1.7497e-07 deg
node 125.1996808337145 2.2123e-05 deg
peri 277.9980925445606 2.1692e-05 deg
M 47.40023812459413 2.4395e-07 deg
tp 2459201.256899745051
(2020-Dec-17.75689975)
9.4591e-07 TDB
period 1482.851539838827
4.06
4.5427e-07
1.244e-09
d
yr
n .2427754838081287 7.4374e-11 deg/d
Q 4.133295919987102 8.4416e-10 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -3.051735550587702E-13 9.284E-14
A2 [EST] -7.768773985397219E-15 9.775E-16
  Orbit Determination Parameters
   # obs. used (total)      6583  
   # delay obs. used      35  
   # Doppler obs. used      28  
   data-arc span      31865 days (87.24 yr)  
   first obs. used      1934-02-10  
   last obs. used      2021-05-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .26941  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-16 06:20:19  

Additional Information
 Earth MOID = .00656587 au 
 Jupiter MOID = 1.29267 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 15.24   n/a E2021B10  
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 0.409559029800968 0.409557774059689 0.409560285542247 27.7833664809044 27.7831323208481 2416138.954535725 0.0934118375546461 62.6245934324746 0.653657056262656 0.813827960819762 1549245.93984509 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1906-Oct-02 14:37 < 00:01 Earth 0.154537147779637 0.154536602609834 0.154537692949468 12.3343368184865 12.3329388793218 2417486.109003131 0.325622413883053 27.3535704056809 0.113902675370308 -6.36734937517551 21230328.6752069 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1922-Mar-30 19:54 < 00:01 Venus 0.088705397185768 0.0887053331749951 0.0887054611968434 8.01644542625484 8.01339106920629 2423144.329392007 0.0943461389907539 8.80077088851305 0.198602856882843 68.7811775572428 64041967.5155032 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1933-Dec-09 17:01 < 00:01 Earth 0.106214837674097 0.106214377049311 0.106215298298884 12.1010154016663 12.0989421951856 2427416.209225147 0.173496351333477 22.9796893815812 0.379817194645255 1.64030827970277 1427470.44725362 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1937-Aug-23 23:45 < 00:01 Earth 0.191375355229421 0.191374778980904 0.191375931477937 20.0856360209323 20.0849428373746 2428769.489680750 0.0572077196314422 28.7422097822123 0.228352001882876 1.31727218092417 2823697.7901883 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1947-May-21 19:16 < 00:01 Jupiter 1.77482347842626 1.77482337106485 1.77482358578767 5.63157407597683 5.54618247886482 2432327.302913606 0.0471649015111737 5.2606261637866 2.1995081665806 9.05449563331018 26260447.5766668 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1959-Mar-06 17:23 < 00:01 Jupiter 1.59561945359475 1.59561938866777 1.59561951852172 4.94135177910874 4.83272930558967 2436634.224317219 0.0355555397990606 3.08607550261791 2.43849825680382 1.30574666032477 36864410.9707683 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1971-Jan-04 20:09 < 00:01 Jupiter 1.51522542891407 1.51522538188397 1.51522547594417 4.60671674442412 4.48372880411978 2440956.339846740 0.0258900710133666 2.72766766631068 1.56526688441401 -48.61883644356 55501064.5559779 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1981-Jan-12 23:45 < 00:01 Earth 0.376506742541516 0.376506658161355 0.376506826921676 24.0861936746445 24.0858998595703 2444617.489360663 0.00698739425714248 4.25077404096947 0.261018862112636 -8.18329700683708 31074244.2861496 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1982-Nov-22 04:38 < 00:01 Jupiter 1.5153684460276 1.51536839391837 1.51536849813684 4.51352535675649 4.38793818181303 2445295.693368680 0.0189454229263194 3.06641381328755 0.848557115637449 -42.0368441580764 77672866.2334728 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1985-Jan-05 17:00 < 00:01 Earth 0.282452235929952 0.282452171766022 0.282452300093881 20.6310412818323 20.6305840346852 2446071.207988880 0.00596641995200782 3.26665066541388 0.235691919098103 -11.6641381502568 35503385.7370222 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1988-Dec-26 00:05 < 00:01 Earth 0.116929689789066 0.11692965684709 0.116929722731043 15.6008007195806 15.5993400196726 2447521.503386345 0.00409190950920113 1.79092670390576 0.175594794303789 -23.6005122653794 38568867.663443 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1992-Dec-08 05:36 < 00:01 Earth 0.0241504186808291 0.0241504175879608 0.0241504197736974 11.1874853761042 11.1776192479103 2448964.733419499 0.000412399777119593 0.79227127143816 0.0539708312164711 89.4462815405186 68147368.8077169 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1994-Oct-29 12:10 < 00:01 Jupiter 1.60075946745254 1.60075939257939 1.6007595423257 4.65855532075662 4.54355167973343 2449655.006890838 0.0139339993186052 4.02308558812784 0.729862082442397 -31.5457357350822 72041060.1766033 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
1996-Nov-29 22:53 < 00:01 Earth 0.0354323430079857 0.0354323392676523 0.0354323467483212 10.1840328226807 10.1766461266971 2450417.453326667 0.0011746924496598 0.77622238763133 0.147622407777425 -81.4008651617714 35845624.7185251 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2000-Oct-31 04:28 < 00:01 Earth 0.0738647931720455 0.0738647837432972 0.0738648026007938 9.7061462253112 9.70242906569963 2451848.686255002 0.00370333135575946 0.749050433167977 0.0759830328051507 -51.497134542236 104592275.95734 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2004-Sep-29 13:37 < 00:01 Earth 0.0103571923148491 0.0103571787923773 0.0103572058373485 10.9982962570068 10.974880539932 2453278.067040398 0.000681811282968524 1.08523607106656 0.018728634311343 -51.5925580927928 67206810.5896431 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2006-Oct-10 02:33 < 00:01 Jupiter 1.73363625795399 1.73363616315997 1.73363635274802 5.09219130010082 4.99532274665307 2454018.606416900 0.016288277348182 4.80260605108265 0.994935729258826 -22.0908131696822 46716864.2146136 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2008-Nov-09 12:22 < 00:01 Earth 0.0502479027620457 0.0502478959151544 0.0502479096089398 9.20807614270064 9.20231562676705 2454780.015326170 0.00164895279231547 0.675898564421239 0.0941601802525737 -60.6467235030347 63723017.1171093 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2012-Dec-12 06:40 < 00:01 Earth 0.0463320420205524 0.0463320385644101 0.0463320454766973 11.9132292139029 11.9084009674203 2456273.777842087 0.00105512181542766 0.633374955335039 0.144238552088708 -81.1997277223547 43861959.9668366 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2016-Dec-29 14:15 < 00:01 Earth 0.251196372654867 0.251196369562487 0.251196375747247 18.3353964795556 18.3348179633367 2457752.094001024 0.00153847898258017 0.624057735330237 0.152341593876428 87.7372262693655 256844324.49737 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2065-Sep-05 06:23 < 00:01 Earth 0.364430054488397 0.364429418316496 0.364430690660299 20.4440068654964 20.4436492338423 2475533.766071484 0.0614832282059523 31.7298005107408 0.112382258800572 1.21065856947344 9180643.21096453 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2069-Nov-05 15:50 < 00:01 Earth 0.0198486852335599 0.0198486347475893 0.0198487357195374 8.40638815142982 8.39040419619278 2477056.159447011 0.299274372588732 2.58922898090677 0.289479656613563 -13.6055055685326 2630437.79282208 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2074-Jan-04 01:51 < 00:01 Earth 0.433389245662315 0.433389138533615 0.433389352791015 22.5507598516934 22.5504872204202 2478576.576936311 0.00815285955276827 5.35886046745258 0.76667012318519 4.59505727389941 12239452.591724 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2112-Aug-28 12:26 < 00:01 Jupiter 1.7962014999801 1.79619949791809 1.79620350204241 5.06098960656028 4.96693964283614 2492692.018164119 0.569280464241084 105.733809214742 1.82181657021042 -23.857232960966 26802297.6884958 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2124-Sep-18 10:25 < 00:01 Jupiter 1.51268971617532 1.51268778840444 1.51269164394697 4.33624929194443 4.2051359817803 2497095.933907155 0.688885807641417 110.798906340499 1.47321738473478 -34.9138145512242 38051690.7608103 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2136-Sep-18 22:45 < 00:01 Jupiter 1.36899657187362 1.36899501061284 1.36899813313594 4.00513449731213 3.84755335170194 2501479.447926181 0.804409338951351 107.262330587801 1.05967568163049 -47.8219702261126 58473207.2529355 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2148-Sep-03 03:35 00:01 Jupiter 1.30796490014579 1.30796365790331 1.30796614239087 3.89838054712545 3.72856469437612 2505846.649479452 1.008493287671 113.610983862029 0.712767759470909 -60.264978389434 92124032.1111319 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2160-Aug-07 12:05 00:01 Jupiter 1.28537743077961 1.28537647553534 1.28537838602885 3.87086968333334 3.69671424856534 2510203.003785964 1.39135527186449 137.865690509107 0.479116905148776 -72.2482306652934 151674763.265173 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2172-Jul-07 08:09 00:02 Jupiter 1.27822875341944 1.27822791920137 1.2782295876487 3.86315635481898 3.68763751023336 2514554.839923315 2.1421030476266 197.490168866982 0.594926617861803 -79.4418515810036 330879441.113279 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2184-Jun-04 02:03 00:03 Jupiter 1.27958508491119 1.27958456669166 1.27958560315749 3.85594444751857 3.68027251202126 2518904.585311468 3.46794373749653 300.104466509243 0.584439963326264 -86.2695347073375 877464527.354479 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21
2196-Apr-29 02:04 00:06 Jupiter 1.27893892204836 1.27893868234832 1.27893916181398 3.85843066159236 3.68278650902797 2523251.585950091 5.66505040623975 468.788037855738 0.720793687584231 87.8883634533172 548873394.56693 T 604 CATAB v2.0g-lin.ifort 2021-Jun-16 06:21:05 2021-Jun-16 06:21

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