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
2012-12-11 23:11:27 C 01 15 01.46 +00 19 50.6 w J38
2012-12-11 23:12:24 C 01 15 02.70 +00 19 58.6 w J38
2012-12-11 23:12:33 C 01 15 02.87 +00 19 59.6 w J38
2012-12-11 23:13:14 C 01 15 03.74 +00 20 05.1 w J38
2012-12-11 23:15:11 C 01 15 06.22 +00 20 21.0 w J38
2012-12-11 23:15:49 C 01 15 07.03 +00 20 26.2 w J38
2012-12-11 23:16:26 C 01 15 07.82 +00 20 31.3 w J38
2012-12-11 23:16:46 C 01 15 08.22 +00 20 33.9 w J38
2012-12-11 23:17:53 C 01 15 09.66 +00 20 43.1 w J38
2012-12-11 23:19:28 C 01 15 11.71 +00 20 56.1 w J38
2012-12-12 01:34:46 C 01 18 15.39 +00 39 34.9 q H21
2012-12-12 01:36:57 C 01 18 18.14 +00 39 52.9 q H21
2012-12-12 01:41:27 C 01 18 23.85 +00 40 30.0 q H21
2012-12-12 01:45:02 C 01 18 28.36 +00 40 59.1 q H21
2012-12-12 01:48:36 C 01 18 32.87 +00 41 28.3 q H21
2012-12-12 01:52:10 C 01 18 37.40 +00 41 57.7 q H21
2012-12-12 17:12:36 C 01 38 46.93 +02 47 00.7 u 510
2012-12-12 17:19:42 C 01 38 56.01 +02 47 58.5 u 510
2012-12-12 17:34:19 C 01 39 14.71 +02 49 57.7 u 510
2012-12-12 17:44:53 C 01 39 28.19 +02 51 23.4 u 510
2012-12-12 17:54:59 C 01 39 41.09 +02 52 45.8 u 510
2012-12-12 18:06:36 C 01 39 55.91 +02 54 20.2 u 510
2012-12-12 18:17:34 C 01 40 09.90 +02 55 49.5 u 510
2012-12-12 18:28:06 C 01 40 23.33 +02 57 15.2 u 510
2012-12-12 18:39:04 C 01 40 37.30 +02 58 44.3 u 510
2012-12-12 18:50:03 C 01 40 51.28 +03 00 13.6 u 510
2012-12-12 18:52:18 C 01 40 53.50 +03 00 43.3 u 595
2012-12-12 19:01:14 C 01 41 05.51 +03 01 44.4 u 510
2012-12-12 19:11:21 C 01 41 18.38 +03 03 06.3 u 510
2012-12-12 19:12:14 C 01 41 18.79 +03 03 25.2 u 595
2012-12-12 19:22:06 C 01 41 32.05 +03 04 33.6 u 510
2012-12-12 19:32:11 C 01 41 44.08 +03 06 06.8 u 595
2012-12-12 19:33:04 C 01 41 46.00 +03 06 02.5 u 510
2012-12-12 19:43:49 C 01 41 59.67 +03 07 29.7 u 510
2012-12-12 19:54:47 C 01 42 13.62 +03 08 58.5 u 510
2012-12-12 20:26:21 C 01 42 53.48 +03 13 23.7 o B67
2012-12-12 20:27:09 C 01 42 54.47 +03 13 29.9 o B67
2012-12-12 20:27:56 C 01 42 55.48 +03 13 36.5 o B67
2012-12-12 21:46:07 C 01 44 34.44 +03 24 11.1 u 560
2012-12-12 21:47:02 C 01 44 35.64 +03 24 18.4 u 560
2012-12-12 21:47:51 C 01 44 36.66 +03 24 24.7 u 560
2012-12-12 21:48:38 C 01 44 37.67 +03 24 31.2 u 560
2012-12-12 22:10:43 C 01 45 05.99 +03 27 28.7 r 147
2012-12-12 22:12:19 C 01 45 10.54 +03 28 27.9 w J47
2012-12-12 22:12:39 C 01 45 08.50 +03 27 44.2 r 147
2012-12-12 22:17:54 C 01 45 15.21 +03 28 26.0 r 147
2012-12-12 22:24:08 C 01 45 23.17 +03 29 15.6 r 147
2012-12-12 22:36:42 C 01 45 41.28 +03 31 44.5 w J47
2012-12-12 22:52:21 C 01 46 00.87 +03 33 51.3 w J47
2012-12-12 23:12:42 C 01 46 26.66 +03 36 34.0 w J47
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)