4179 Toutatis (1989 AC)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6247403187 ± 2.00e+00
Semi-major axis (a)2.5430298482 AU ± 3.00e+00
Inclination (i)0.44808312° ± 4.00e+00
Long. of Asc. Node (Ω)125.36620064° ± 5.00e+00
Arg. of Perihelion (ω)277.86046506° ± 6.00e+00
Mean Anomaly (M)76.89344252° ± 4.67e-07
Mean Motion (n)0.2430441038°/day ± 4.30e-01
Perihelion dist (q)0.95429657 AU ± 5.21e+00
Aphelion dist (Q)4.13176313 AU ± 7.04e+00
Orbital Period4.05533921 yr ± 7.18e+00
NGA Modelg(r)
A12.91030472e-04 AU/d²
A2-4.49990093e-07 AU/d²
Physical Parameters
H (abs. magnitude)15.29
G (slope)0.15
Alternative Designations

1934 CT

Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.347″
Uncertainty0
Orbit TypeApollo
MOID0.006536 AU
Observations Used6547
Radar Obs Used38
Gaia Obs Used37
Oppositions63
Arc Total1934-2017
First Observation Used1976-05-27
Last Observation Used2026-03-20
Observations (7141)
Date Type RA Dec Mag Band Observatory
2017-04-12 11:41:12 C 08 03 47.61 +20 39 02.1 q D29
2017-04-12 12:04:06 C 08 03 49.40 +20 38 56.6 q D29
2017-04-12 12:27:00 C 08 03 51.16 +20 38 51.8 q D29
2017-04-17 04:24:14 C 08 12 36.40 +20 12 33.3 q 703
2017-04-17 04:30:33 C 08 12 36.89 +20 12 31.8 q 703
2017-04-17 04:37:00 C 08 12 37.35 +20 12 30.1 q 703
2017-04-17 04:43:18 C 08 12 37.88 +20 12 28.6 q 703
2017-04-18 04:02:22 C 08 14 26.01 +20 06 50.1 q G96
2017-04-18 04:08:32 C 08 14 26.47 +20 06 48.7 q G96
2017-04-18 04:14:39 C 08 14 26.94 +20 06 47.3 q G96
2017-04-18 04:20:47 C 08 14 27.41 +20 06 45.8 q G96
2017-04-28 04:37:14 C 08 32 38.09 +19 05 35.4 q G96
2017-04-28 04:43:24 C 08 32 38.55 +19 05 33.8 q G96
2017-04-28 04:51:13 C 08 32 39.12 +19 05 31.5 q G96
2017-04-28 04:57:23 C 08 32 39.57 +19 05 29.9 q G96
2017-05-07 03:19:41 C 08 48 21.33 +18 06 35.3 q G96
2017-05-07 03:25:50 C 08 48 21.76 +18 06 33.4 q G96
2017-05-07 03:31:58 C 08 48 22.20 +18 06 31.8 q G96
2017-05-07 03:38:09 C 08 48 22.65 +18 06 30.2 q G96
2017-05-27 04:02:43 C 09 22 00.26 +15 41 58.9 q G96
2017-05-27 04:08:49 C 09 22 00.65 +15 41 56.9 q G96
2017-05-27 04:14:45 C 09 22 01.06 +15 41 55.3 q G96
2017-05-27 04:20:44 C 09 22 01.48 +15 41 53.3 q G96
2017-05-27 04:29:12 C 09 22 02.04 +15 41 50.6 q G96
2017-05-27 04:33:14 C 09 22 02.31 +15 41 49.6 q G96
2017-05-27 04:37:16 C 09 22 02.60 +15 41 48.1 q G96
2017-05-27 04:41:22 C 09 22 02.86 +15 41 46.6 q G96
2018-03-17 12:24:08 C 13 59 44.266 -11 36 07.09 U F51
2018-03-17 12:39:30 C 13 59 43.829 -11 36 04.75 U F51
2018-03-17 12:54:57 C 13 59 43.393 -11 36 02.28 U F51
2018-03-17 13:10:26 C 13 59 42.950 -11 35 59.84 U F51
2018-03-21 09:56:10 C 13 57 01.70 -11 21 00.3 U G96
2018-03-21 10:05:52 C 13 57 01.39 -11 20 58.7 U G96
2018-03-21 10:13:18 C 13 57 01.18 -11 20 57.8 U G96
2018-03-21 10:20:44 C 13 57 00.98 -11 20 56.5 U G96
2018-04-12 10:38:30 C 13 38 44.249 -09 37 17.00 U F51
2018-04-12 10:57:04 C 13 38 43.544 -09 37 13.03 U F51
2018-04-12 11:15:37 C 13 38 42.842 -09 37 09.09 U F51
2018-04-16 08:08:26 C 13 35 16.61 -09 17 20.0 U G96
2018-04-16 08:15:49 C 13 35 16.34 -09 17 18.0 U G96
2018-04-16 08:23:12 C 13 35 16.07 -09 17 16.8 U G96
2018-04-16 08:30:35 C 13 35 15.79 -09 17 15.3 U G96
2018-05-19 07:53:15 C 13 10 37.712 -06 52 50.51 U F51
2018-05-19 08:10:29 C 13 10 37.306 -06 52 48.35 U F51
2018-05-19 08:27:43 C 13 10 36.927 -06 52 46.01 U F51
2018-05-19 08:45:00 C 13 10 36.531 -06 52 43.76 U F51
2019-05-09 10:43:08 C 15 37 34.877 -18 50 22.80 U F51
2019-05-09 11:15:13 C 15 37 33.659 -18 50 18.56 U F51
2019-05-09 11:31:18 C 15 37 33.049 -18 50 16.49 U F51
2019-05-14 06:27:15 C 15 33 12.85 -18 35 21.4 V G96
Radar Observations (100)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1992-11-27 22:20:00 613910.6 1 Hz 8510 -14 -14
1992-11-27 23:40:00 71249152 10 us 8510 -14 -14
1992-11-27.930556 61391060 100 Hz 8510 253 253
1992-11-27.986111 7124915200 10000 us 8510 253 253
1992-12-02 21:40:00 523514.76 0.52 Hz 8510 -14 -14
1992-12-02.902778 4218031212 650 us 8510 253 253
1992-12-03 19:30:00 37450923.337 1.44 us 8510 -14 -14
1992-12-03 19:30:00 494766.019 0.28 Hz 8510 -14 -14
1992-12-03.812500 3745092334 1440 us 8510 253 253
1992-12-04 18:10:00 32975711.079 1.64 us 8510 -14 -14
1992-12-04 18:10:00 443775.732 0.32 Hz 8510 -14 -14
1992-12-04.756944 3297571108 1640 us 8510 253 253
1992-12-05 17:30:00 29027804.001 1.2 us 8510 -14 -14
1992-12-05 17:30:00 362243.902 0.24 Hz 8510 -14 -14
1992-12-05.729167 2902780400 1200 us 8510 253 253
1992-12-06 16:40:00 26056497.203 0.92 us 8510 -13 -14
1992-12-06 16:40:00 248335.943 0.16 Hz 8510 -13 -14
1992-12-06.694444 2605649720 920 us 8510 253 252
1992-12-07 17:20:00 24307305.745 2.44 us 8510 -13 -14
1992-12-07.722222 2430730575 2440 us 8510 253 252
1992-12-08 14:40:00 24202819.27 0.48 us 8510 -14 -14
1992-12-08 14:40:00 -58768.687 0.08 Hz 8510 -14 -14
1992-12-08.611111 2420281927 480 us 8510 253 253
1992-12-09 17:30:00 25938862.116 1.36 us 8510 -14 -14
1992-12-09 17:30:00 -250054.867 0.24 Hz 8510 -14 -14
1992-12-09.729167 2593886212 1360 us 8510 253 253
1992-12-10 17:00:00 28867565.808 1.52 us 8510 -14 -14
1992-12-10 17:00:00 -364551.377 0.28 Hz 8510 -14 -14
1992-12-10.708333 2886756581 1520 us 8510 253 253
1992-12-11 09:40:00 31542082.782 1.36 us 8510 -14 -14
1992-12-11 09:40:00 -389322.673 0.24 Hz 8510 -14 -14
1992-12-11.402778 3154208278 1360 us 8510 253 253
1992-12-12 09:20:00 35939781.859 1.28 us 8510 -14 -14
1992-12-12 09:20:00 -450249.232 0.24 Hz 8510 -14 -14
1992-12-12.388889 3593978186 1280 us 8510 253 253
1992-12-13 08:10:00 40664482.454 1.64 us 8510 -14 -14
1992-12-13 08:10:00 -487485.645 0.32 Hz 8510 -14 -14
1992-12-13.340278 4066448245 1640 us 8510 253 253
1992-12-14 07:50:00 45891287.505 1.92 us 8510 -14 -14
1992-12-14 07:50:00 -515942.546 1.92 Hz 8510 -14 -14
1992-12-14.326389 4589128751 1920 us 8510 253 253
1992-12-15 07:50:00 51433656.661 2.36 us 8510 -14 -14
1992-12-15 07:50:00 -537151.849 0.44 Hz 8510 -14 -14
1992-12-15.326389 5143365666 2360 us 8510 253 253
1992-12-16 07:10:00 56997841.703 3.2 us 8510 -14 -14
1992-12-16 07:10:00 -550720.993 0.64 Hz 8510 -14 -14
1992-12-16.298611 5699784170 3200 us 8510 253 253
1992-12-17 06:50:00 62767761.168 3.36 us 8510 -14 -14
1992-12-17 06:50:00 -561924.364 0.64 Hz 8510 -14 -14
1992-12-17 08:00:00 63030108.88 4.52 us 2380 -1 -1
1992-12-17.284722 6276776117 3360 us 8510 253 253
1992-12-17.333333 6303010888 4520 us 2380 251 251
1992-12-18 07:10:00 68800974.112 1.88 us 8510 -14 -14
1992-12-18 07:10:00 -572657.338 0.36 Hz 8510 -14 -14
1992-12-18 08:00:00 68989080.84 4.52 us 2380 -1 -1
1992-12-18.298611 6880097411 1880 us 8510 253 253
1992-12-18.333333 6898908084 4520 us 2380 251 251
1992-12-19 07:40:00 74948572.01 4.52 us 2380 -1 -1
1992-12-19 07:40:00 -167522.91 0.24 Hz 2380 -1 -1
1992-12-19.319444 7494857201 4520 us 2380 251 251
1996-11-25 19:50:00 335217.755 0.07 Hz 8510 -13 -14
1996-11-25.826389 33521776 7 Hz 8510 253 252
1996-11-26.750000 4012841509 500 us 8510 253 252
1996-11-27 17:50:00 206061.474 0.07 Hz 8510 -13 -14
1996-11-27.743056 20606147 7 Hz 8510 253 252
1996-11-28 17:30:00 117850.312 0.07 Hz 8510 -13 -14
1996-11-28.729167 11785031 7 Hz 8510 253 252
1996-11-29 15:40:00 36193.593 0.07 Hz 8510 -13 -14
1996-11-29.652778 3619359 7 Hz 8510 253 252
1996-11-30 14:40:00 -54016.239 0.07 Hz 8510 -13 -14
1996-11-30.611111 -5401624 7 Hz 8510 253 252
1996-12-01 13:20:00 -135658.745 0.07 Hz 8510 -13 -14
1996-12-01.555556 -13565874 7 Hz 8510 253 252
1996-12-02 13:10:00 -216056.675 0.07 Hz 8510 -13 -14
1996-12-02.548611 -21605667 7 Hz 8510 253 252
1996-12-03 12:10:00 -276563.595 0.07 Hz 8510 -13 -14
1996-12-03.506944 -27656359 7 Hz 8510 253 252
2000-11-02 18:10:00 -114782.5 0.6 Hz 8560 -14 -14
2000-11-02.756944 -11478250 60 Hz 8560 253 253
2004-10-09 13:36:00 64484452.1 0.9 us 2380 -1 -1
2004-10-09.566667 6448445210 900 us 2380 251 251
2008-11-23.458333 8922229990 2000 us 2380 251 251
2012-12-04 03:30:00 71954861.33 4 us 8560 -14 -14
2012-12-04.145833 7195486133 4000 us 8560 253 253
2012-12-06 04:30:00 62051487.94 2.5 us 8560 -14 -14
2012-12-06.187500 6205148794 2500 us 8560 253 253
2012-12-07 04:40:00 57734632.83 3 us 8560 -14 -14
2012-12-07.194444 5773463283 3000 us 8560 253 253
2012-12-08 03:00:00 54185818.93 3 us 8560 -14 -14
2012-12-08.125000 5418581893 3000 us 8560 253 253
2012-12-09 03:50:00 50873215.22 3 us 8560 -14 -14
2012-12-10 03:10:00 48477666.13 3 us 8560 -14 -14
2012-12-14 09:10:00 48440142.08 2.5 us 8560 -14 -14
2012-12-15 03:00:00 50202493.37 2.5 us 8560 -14 -14
2016-12-27 03:50:00 251784887 8 us 8560 -14 -14
2016-12-27 22:09:00 251186454.04 2 us 2380 -1 -1
2016-12-28 22:19:00 250739924.13 2 us 2380 -1 -1
2016-12-29 22:03:00 250676054.21 2 us 2380 -1 -1
2017-01-07 22:52:00 267803347.48 2 us 2380 -1 -1
2017-01-07 23:15:00 267861144.35 2 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -13 DSS-13 Goldstone (34-m) -1 Arecibo (305-m, 1963–2020)