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
2017-01-14 17:53:12 C 03 10 23.69 +17 02 50.0 q Z52
2017-01-14 18:36:01 C 03 10 36.97 +17 03 47.9 q Z52
2017-01-14 19:18:52 C 03 10 50.23 +17 04 45.5 q Z52
2017-01-14 19:58:34 C 03 11 02.51 +17 05 39.0 q Z52
2017-01-16 07:05:57 C 03 21 53.04 +17 50 50.3 L T05
2017-01-16 07:16:49 C 03 21 56.24 +17 51 03.4 L T05
2017-01-16 07:41:56 C 03 22 03.68 +17 51 33.6 L T05
2017-01-16 07:51:52 C 03 22 06.60 +17 51 45.6 L T05
2017-01-18 18:33:59 C 03 39 20.88 +18 57 22.2 u C36
2017-01-18 18:34:35 C 03 39 21.04 +18 57 22.5 u C36
2017-01-18 18:39:53 C 03 39 22.55 +18 57 27.8 u C36
2017-01-19 03:27:01 C 03 41 51.54 +19 06 32.8 q G96
2017-01-19 03:33:13 C 03 41 53.24 +19 06 39.1 q G96
2017-01-19 03:39:23 C 03 41 54.92 +19 06 45.1 q G96
2017-01-19 03:45:32 C 03 41 56.62 +19 06 51.3 q G96
2017-01-19 18:19:35 C 03 46 00.68 +19 21 03.0 13.3 c K63
2017-01-19 18:33:08 C 03 46 04.30 +19 21 16.4 13.2 c K63
2017-01-19 19:07:58 C 03 46 13.73 +19 21 50.0 13.1 c K63
2017-01-19 20:33:33 C 03 46 37.01 +19 23 07.7 q G33
2017-01-19 20:35:57 C 03 46 37.59 +19 23 10.1 q G33
2017-01-20 19:22:47 C 03 52 49.64 +19 44 08.3 q K74
2017-01-20 19:25:01 C 03 52 50.22 +19 44 10.2 q K74
2017-01-20 20:05:13 C 03 53 00.81 +19 44 45.8 q K74
2017-01-20 20:09:40 C 03 53 01.97 +19 44 49.7 q K74
2017-01-20 20:12:23 C 03 53 02.69 +19 44 52.2 q K74
2017-01-20 20:21:00 C 03 53 05.19 +19 44 58.6 15.1 q Z87
2017-01-20 20:31:30 C 03 53 07.90 +19 45 07.6 15.1 q Z87
2017-01-20 20:48:21 C 03 53 12.12 +19 45 25.9 q 160
2017-01-20 20:50:18 C 03 53 12.63 +19 45 27.6 q 160
2017-01-20 20:52:15 C 03 53 13.10 +19 45 28.8 q 160
2017-01-23 14:54:23 C 04 10 12.99 +20 38 12.9 q Q11
2017-01-23 15:06:12 C 04 10 15.88 +20 38 21.1 q Q11
2017-01-23 15:10:56 C 04 10 17.03 +20 38 24.1 q Q11
2017-01-24 01:49:16 C 04 12 55.40 +20 45 57.6 q H45
2017-01-24 01:50:16 C 04 12 55.64 +20 45 58.3 q H45
2017-01-24 01:51:21 C 04 12 55.90 +20 45 59.1 q H45
2017-01-24 01:52:13 C 04 12 56.10 +20 45 59.7 q H45
2017-01-24 01:53:02 C 04 12 56.30 +20 46 00.2 q H45
2017-01-24 01:53:54 C 04 12 56.51 +20 46 00.9 q H45
2017-01-24 07:46:26 C 04 14 21.66 +20 50 07.6 L T05
2017-01-24 08:09:34 C 04 14 27.13 +20 50 23.0 L T05
2017-01-24 08:25:26 C 04 14 30.88 +20 50 33.6 L T05
2017-01-24 08:40:39 C 04 14 34.49 +20 50 43.6 L T05
2017-01-24 08:55:26 C 04 14 37.98 +20 50 53.3 L T05
2017-01-24 18:13:31 C 04 16 53.83 +20 56 53.5 q Z52
2017-01-24 19:02:31 C 04 17 05.36 +20 57 26.1 q Z52
2017-01-24 19:49:36 C 04 17 16.42 +20 57 57.0 q Z52
2017-01-24 19:49:41 C 04 17 16.18 +20 57 59.8 u 107
2017-01-24 19:54:02 C 04 17 17.21 +20 58 02.7 u 107
2017-01-24 19:58:52 C 04 17 18.33 +20 58 05.6 u 107
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)