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
2012-12-17 21:28:35 C 03 57 12.89 +15 27 35.4 w J38
2012-12-17 21:28:48 C 03 57 13.09 +15 27 36.2 w J38
2012-12-17 21:29:45 C 03 57 13.85 +15 27 39.7 w J38
2012-12-17 21:45:50 C 03 57 25.99 +15 28 47.3 c J19
2012-12-17 21:47:30 C 03 57 27.30 +15 28 53.5 c J19
2012-12-17 21:49:09 C 03 57 28.72 +15 29 00.0 c J19
2012-12-17 21:50:49 C 03 57 30.04 +15 29 06.1 c J19
2012-12-17 21:52:30 C 03 57 31.35 +15 29 11.8 c J19
2012-12-17 21:54:11 C 03 57 32.72 +15 29 18.1 c J19
2012-12-17 21:55:50 C 03 57 34.03 +15 29 24.3 c J19
2012-12-17 21:57:30 C 03 57 35.40 +15 29 30.6 c J19
2012-12-17 21:59:11 C 03 57 36.73 +15 29 36.6 c J19
2012-12-17 22:00:52 C 03 57 38.07 +15 29 42.9 c J19
2012-12-17 22:02:32 C 03 57 39.49 +15 29 49.1 c J19
2012-12-17 22:04:11 C 03 57 40.79 +15 29 55.2 c J19
2012-12-17 22:05:52 C 03 57 42.11 +15 30 01.2 c J19
2012-12-17 22:07:33 C 03 57 43.45 +15 30 07.5 c J19
2012-12-17 22:09:13 C 03 57 44.84 +15 30 13.7 c J19
2012-12-17 22:12:08 C 03 57 47.16 +15 30 24.3 c J19
2012-12-18 05:39:10 C 04 03 51.37 +15 56 58.9 q H45
2012-12-18 05:40:43 C 04 03 52.54 +15 57 04.2 q H45
2012-12-18 05:41:49 C 04 03 53.38 +15 57 07.7 q H45
2012-12-18 05:42:55 C 04 03 54.23 +15 57 11.4 q H45
2012-12-18 05:44:02 C 04 03 55.10 +15 57 15.3 q H45
2012-12-18 05:44:49 C 04 03 55.70 +15 57 18.0 q H45
2012-12-18 05:45:49 C 04 03 56.46 +15 57 21.2 q H45
2012-12-18 05:46:38 C 04 03 57.09 +15 57 23.9 q H45
2012-12-18 05:58:33 C 04 04 08.08 +15 58 12.6 q 448
2012-12-18 06:02:45 C 04 04 11.28 +15 58 26.8 q 448
2012-12-18 06:06:58 C 04 04 14.50 +15 58 41.0 q 448
2012-12-18 06:11:37 C 04 04 18.08 +15 58 56.8 q 448
2012-12-18 06:16:56 C 04 04 22.18 +15 59 14.7 q 448
2012-12-18 06:21:35 C 04 04 25.70 +15 59 30.2 q 448
2012-12-19 20:20:09 C 04 31 50.56 +17 47 20.5 u G33
2012-12-19 20:31:41 C 04 31 57.74 +17 47 49.0 u G33
2012-12-19 20:50:56 C 04 32 09.69 +17 48 34.5 u G33
2012-12-19 21:05:38 C 04 32 18.78 +17 49 10.7 u G33
2012-12-19 21:18:07 C 04 32 26.53 +17 49 39.4 u G33
2012-12-20 09:41:18 C 04 40 07.57 +18 19 54.8 q E89
2012-12-20 09:45:31 C 04 40 10.01 +18 20 03.9 q E89
2012-12-20 09:48:04 C 04 40 11.46 +18 20 09.1 q E89
2012-12-20 09:55:15 C 04 40 15.54 +18 20 24.3 q E89
2012-12-21 02:22:57 C 04 49 40.05 +18 50 08.1 u H23
2012-12-21 02:43:48 C 04 49 50.82 +18 50 46.9 u H23
2012-12-21 03:04:45 C 04 50 01.59 +18 51 25.3 u H23
2012-12-23 02:49:41 C 05 12 36.57 +19 59 58.3 w J38
2012-12-23 02:51:14 C 05 12 37.19 +20 00 00.1 w J38
2012-12-23 02:52:48 C 05 12 37.81 +20 00 01.7 w J38
2012-12-23 02:53:58 C 05 12 38.29 +20 00 03.0 w J38
2012-12-23 02:54:45 C 05 12 38.61 +20 00 03.9 w J38
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)