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
2013-06-04 04:25:28 C 09 47 36.78 +13 37 44.5 u G96
2013-06-04 04:32:13 C 09 47 37.17 +13 37 42.5 u G96
2013-06-04 04:39:01 C 09 47 37.57 +13 37 40.4 u G96
2014-03-27 12:39:30 C 13 57 38.898 -11 23 52.63 L F51
2014-03-27 12:55:50 C 13 57 38.333 -11 23 49.83 L F51
2014-03-27 13:27:05 C 13 57 37.313 -11 23 44.00 L F51
2014-04-01 07:17:34 C 13 53 48.01 -11 02 28.6 o 691
2014-04-01 07:39:25 C 13 53 47.26 -11 02 24.0 o 691
2014-04-01 08:01:15 C 13 53 46.49 -11 02 20.2 o 691
2014-04-04 11:03:05 C 13 51 08.766 -10 47 37.24 L F51
2014-04-04 11:19:26 C 13 51 08.176 -10 47 34.04 L F51
2014-04-04 11:35:47 C 13 51 07.582 -10 47 30.95 L F51
2014-04-23 00:26:43 C 13 34 54.95 -09 15 16.2 L W84
2014-04-23 00:31:23 C 13 34 54.78 -09 15 15.2 L W84
2014-04-23 00:35:59 C 13 34 54.61 -09 15 14.3 L W84
2014-04-23 00:40:33 C 13 34 54.44 -09 15 13.4 L W84
2014-04-23 00:45:07 C 13 34 54.28 -09 15 12.4 L W84
2014-04-25 00:53:22 C 13 33 11.39 -09 05 19.1 L W84
2014-04-25 00:57:55 C 13 33 11.22 -09 05 18.2 L W84
2014-04-25 01:02:30 C 13 33 11.06 -09 05 17.3 L W84
2014-04-25 01:07:04 C 13 33 10.89 -09 05 16.4 L W84
2014-04-25 01:11:40 C 13 33 10.73 -09 05 15.4 L W84
2014-05-03 05:59:18 C 13 26 29.63 -08 26 34.1 q G96
2014-05-03 06:06:40 C 13 26 29.40 -08 26 32.6 q G96
2014-05-03 06:14:01 C 13 26 29.12 -08 26 30.9 q G96
2014-05-03 06:21:22 C 13 26 28.89 -08 26 29.8 q G96
2014-05-09 05:31:36 C 13 22 04.30 -08 00 47.0 q G96
2014-05-09 05:46:05 C 13 22 03.87 -08 00 44.1 q G96
2014-05-09 05:57:44 C 13 22 03.57 -08 00 42.2 q G96
2014-05-09 06:09:21 C 13 22 03.21 -08 00 40.7 q G96
2014-05-18 07:01:56 C 13 16 18.800 -07 27 06.80 L F51
2014-05-18 07:18:09 C 13 16 18.399 -07 27 04.44 L F51
2014-05-18 07:34:21 C 13 16 18.003 -07 27 02.18 L F51
2015-04-15 09:10:04 C 16 01 38.55 -20 06 47.0 o 695
2015-04-15 10:04:52 C 16 01 37.14 -20 06 42.9 o 695
2015-04-15 10:59:26 C 16 01 35.74 -20 06 38.9 o 695
2015-05-20 04:34:15 C 15 33 09.48 -18 35 32.6 L W84
2015-05-20 04:38:53 C 15 33 09.30 -18 35 31.9 L W84
2015-05-20 04:43:26 C 15 33 09.12 -18 35 31.4 L W84
2015-05-20 04:48:05 C 15 33 08.93 -18 35 30.7 L W84
2015-05-20 04:52:45 C 15 33 08.74 -18 35 30.1 L W84
2015-05-21 05:29:12 C 15 32 11.59 -18 32 12.0 L W84
2015-05-21 05:33:50 C 15 32 11.40 -18 32 11.4 L W84
2015-05-21 05:38:30 C 15 32 11.22 -18 32 10.8 L W84
2015-05-21 05:43:10 C 15 32 11.03 -18 32 10.1 L W84
2015-05-21 05:47:51 C 15 32 10.85 -18 32 09.5 L W84
2015-05-23 04:21:27 C 15 30 23.13 -18 25 53.2 L W84
2015-05-23 04:26:06 C 15 30 22.95 -18 25 52.6 L W84
2015-05-23 04:30:44 C 15 30 22.77 -18 25 51.9 L W84
2015-05-23 04:35:26 C 15 30 22.59 -18 25 51.3 L W84
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)