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
2022-03-06 12:05:18 C 13 56 41.645 -11 20 59.37 U F52
2022-03-06 12:21:53 C 13 56 41.267 -11 20 57.30 U F52
2022-03-06 12:38:33 C 13 56 40.890 -11 20 55.28 U F52
2022-03-06 12:55:14 C 13 56 40.533 -11 20 53.23 U F52
2022-03-08 09:38:03 C 13 55 40.45 -11 15 09.6 V G96
2022-03-08 09:45:31 C 13 55 40.29 -11 15 07.6 V G96
2022-03-08 09:53:00 C 13 55 40.11 -11 15 07.5 V G96
2022-03-08 10:00:28 C 13 55 39.91 -11 15 07.0 V G96
2022-03-24 10:23:15 C 13 44 41.46 -10 12 14.9 V G96
2022-03-24 10:30:37 C 13 44 41.24 -10 12 13.0 V G96
2022-03-24 10:37:57 C 13 44 41.00 -10 12 11.6 V G96
2022-03-24 10:45:16 C 13 44 40.71 -10 12 10.6 V G96
2022-03-29 11:21:09 C 13 40 32.533 -09 48 16.15 U F52
2022-03-29 11:38:33 C 13 40 31.925 -09 48 12.18 U F52
2022-03-29 11:55:56 C 13 40 31.296 -09 48 09.32 U F52
2022-03-29 12:13:18 C 13 40 30.670 -09 48 05.60 U F52
2022-04-06 07:45:53 C 13 33 41.490 -09 08 23.17 V G96
2022-04-06 07:54:00 C 13 33 41.184 -09 08 21.91 V G96
2022-04-06 08:02:07 C 13 33 40.889 -09 08 19.97 V G96
2022-04-06 08:10:14 C 13 33 40.561 -09 08 18.17 V G96
2022-04-07 10:52:43 C 13 32 40.989 -09 02 28.68 U F52
2022-04-07 11:09:18 C 13 32 40.354 -09 02 25.05 U F52
2022-04-07 11:25:54 C 13 32 39.721 -09 02 21.45 U F52
2022-04-10 10:06:16 C 13 30 01.386 -08 46 53.00 V G96
2022-04-10 10:13:41 C 13 30 01.062 -08 46 51.02 V G96
2022-04-10 10:21:03 C 13 30 00.767 -08 46 48.61 V G96
2022-04-12 02:10:37 C 13 28 31.47 -08 38 00.9 V 221
2022-04-12 02:26:15 C 13 28 30.86 -08 37 58.1 V 221
2022-04-22 05:19:09 C 13 19 37.160 -07 45 18.25 V G96
2022-04-22 05:27:13 C 13 19 36.851 -07 45 16.88 V G96
2022-04-22 05:35:17 C 13 19 36.563 -07 45 15.05 V G96
2022-04-22 05:43:24 C 13 19 36.275 -07 45 12.92 V G96
2022-04-27 08:44:22 C 13 15 20.893 -07 19 49.38 U F52
2022-04-27 08:59:07 C 13 15 20.393 -07 19 46.36 U F52
2022-04-27 09:13:54 C 13 15 19.886 -07 19 43.41 U F52
2022-04-27 09:28:42 C 13 15 19.374 -07 19 40.59 U F52
2022-05-03 07:21:26 C 13 10 45.354 -06 52 21.04 V G96
2022-05-03 07:28:59 C 13 10 45.145 -06 52 19.99 V G96
2022-05-03 07:36:31 C 13 10 44.886 -06 52 18.05 V G96
2022-05-03 07:44:03 C 13 10 44.648 -06 52 17.18 V G96
2022-05-06 07:43:50 C 13 08 36.019 -06 39 24.62 U F52
2022-05-06 08:53:24 C 13 08 33.954 -06 39 12.48 U F52
2022-05-06 09:09:03 C 13 08 33.495 -06 39 09.71 U F52
2023-03-26 13:29:50 C 15 56 28.045 -19 52 58.90 U F51
2023-03-26 13:46:11 C 15 56 27.846 -19 52 58.47 U F51
2023-03-26 14:02:33 C 15 56 27.639 -19 52 57.58 U F51
2023-03-26 14:18:54 C 15 56 27.439 -19 52 57.15 U F51
2023-03-31 13:40:27 C 15 54 48.207 -19 47 29.99 U F52
2023-03-31 13:55:59 C 15 54 47.955 -19 47 29.19 U F52
2023-03-31 14:11:31 C 15 54 47.685 -19 47 28.54 U F52
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)