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
2015-05-23 04:40:04 C 15 30 22.40 -18 25 50.7 L W84
2015-06-11 07:36:14 C 15 13 59.121 -17 26 03.59 L F51
2015-06-11 07:52:21 C 15 13 58.595 -17 26 01.66 L F51
2015-06-11 08:08:31 C 15 13 58.071 -17 25 59.87 L F51
2015-07-19 06:34:35 C 14 57 28.217 -16 23 25.55 L F51
2015-07-19 06:50:14 C 14 57 28.113 -16 23 25.08 L F51
2015-07-19 07:21:59 C 14 57 27.970 -16 23 24.92 L F51
2016-05-04 10:33:16 C 20 10 10.24 -19 49 07.7 R G45
2016-05-04 10:49:16 C 20 10 10.78 -19 49 05.6 R G45
2016-05-04 10:57:21 C 20 10 11.03 -19 49 04.4 R G45
2016-05-04 11:13:26 C 20 10 11.59 -19 49 04.0 R G45
2016-05-05 10:40:41 C 20 11 00.06 -19 46 33.1 R G45
2016-05-05 10:48:44 C 20 11 00.35 -19 46 32.0 R G45
2016-05-05 10:56:46 C 20 11 00.58 -19 46 31.8 R G45
2016-05-05 11:05:06 C 20 11 00.88 -19 46 30.3 R G45
2016-05-18 17:15:01 C 20 20 19.91 -19 16 31.9 q Q60
2016-05-18 17:28:51 C 20 20 20.33 -19 16 31.8 q Q60
2016-05-18 17:42:47 C 20 20 20.58 -19 16 28.8 q Q60
2016-06-28 03:00:49 C 20 21 10.33 -19 16 35.9 o Z22
2016-06-28 03:14:09 C 20 21 09.79 -19 16 36.8 o Z22
2016-06-28 03:26:03 C 20 21 09.56 -19 16 37.5 o Z22
2016-07-01 23:36:15 C 20 18 12.79 -19 27 04.9 q K14
2016-07-01 23:47:49 C 20 18 12.39 -19 27 06.6 q K14
2016-07-01 23:55:32 C 20 18 12.05 -19 27 07.4 q K14
2016-07-02 00:02:43 C 20 18 11.81 -19 27 08.4 q K14
2016-07-02 00:10:13 C 20 18 11.54 -19 27 09.4 q K14
2016-07-02 00:17:46 C 20 18 11.26 -19 27 10.3 q K14
2016-07-04 01:51:12 C 20 16 20.18 -19 33 34.5 q G40
2016-07-04 03:18:00 C 20 16 16.55 -19 33 46.1 q G40
2016-07-04 04:58:41 C 20 16 12.36 -19 33 59.4 q G40
2016-07-04 08:58:05 C 20 16 03.20 -19 34 32.8 o 691
2016-07-04 09:24:50 C 20 16 02.07 -19 34 36.5 o 691
2016-07-04 09:51:34 C 20 16 00.94 -19 34 40.0 o 691
2016-07-04 11:46:36 C 20 15 56.519 -19 34 54.57 L F51
2016-07-04 12:02:04 C 20 15 55.856 -19 34 56.78 L F51
2016-07-04 12:17:29 C 20 15 55.195 -19 34 58.96 L F51
2016-07-04 12:32:54 C 20 15 54.547 -19 35 00.95 L F51
2016-07-05 07:24:26 C 20 15 08.74 -19 37 40.0 R G45
2016-07-05 07:31:26 C 20 15 08.43 -19 37 41.0 R G45
2016-07-05 07:38:25 C 20 15 08.08 -19 37 41.6 R G45
2016-07-05 07:45:24 C 20 15 07.82 -19 37 42.1 R G45
2016-07-05 07:52:20 C 20 15 07.55 -19 37 43.5 R G45
2016-07-05 07:59:19 C 20 15 07.21 -19 37 44.8 R G45
2016-07-05 10:47:04 C 20 14 59.90 -19 38 08.4 o 691
2016-07-05 10:56:15 C 20 14 59.49 -19 38 09.8 o 691
2016-07-05 11:05:28 C 20 14 59.10 -19 38 12.0 o 691
2016-07-06 00:31:30 C 20 14 25.86 -19 39 58.7 q Y00
2016-07-06 00:44:15 C 20 14 25.28 -19 40 00.7 q Y00
2016-07-06 01:00:37 C 20 14 24.56 -19 40 03.3 q Y00
2016-07-06 10:59:11 C 20 13 58.45 -19 41 37.6 L T05
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)