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
2012-12-12 23:26:01 C 01 46 43.43 +03 38 20.5 w J47
2012-12-13 00:56:38 C 01 48 51.38 +03 50 20.5 t H47
2012-12-13 00:57:51 C 01 48 52.91 +03 50 30.3 t H47
2012-12-13 00:59:03 C 01 48 54.43 +03 50 39.9 t H47
2012-12-13 01:00:15 C 01 48 55.94 +03 50 49.6 t H47
2012-12-13 03:49:48 C 01 52 28.97 +04 13 18.1 q H45
2012-12-13 03:50:36 C 01 52 29.97 +04 13 24.4 q H45
2012-12-13 03:51:09 C 01 52 30.65 +04 13 28.9 q H45
2012-12-13 03:52:03 C 01 52 31.78 +04 13 36.0 q H45
2012-12-13 03:52:55 C 01 52 32.85 +04 13 42.7 q H45
2012-12-13 03:53:57 C 01 52 34.15 +04 13 51.0 q H45
2012-12-13 03:55:26 C 01 52 36.01 +04 14 02.8 q H45
2012-12-13 03:56:08 C 01 52 36.90 +04 14 08.2 q H45
2012-12-13 08:23:01 C 01 58 20.884 +04 50 08.33 V T12
2012-12-13 08:27:42 C 01 58 26.701 +04 50 45.05 V T12
2012-12-13 08:29:16 C 01 58 28.652 +04 50 57.38 V T12
2012-12-13 08:30:37 C 01 58 30.323 +04 51 07.95 V T12
2012-12-13 08:34:04 C 01 58 34.604 +04 51 34.91 V T12
2012-12-13 08:39:32 C 01 58 41.401 +04 52 17.79 V T12
2012-12-13 18:42:35 C 02 11 44.92 +06 09 33.8 w J47
2012-12-13 19:07:01 C 02 12 15.00 +06 12 41.1 w J47
2012-12-13 19:08:44 C 02 12 14.53 +06 12 29.6 w I57
2012-12-13 19:10:44 C 02 12 16.99 +06 12 45.1 w I57
2012-12-13 19:48:58 C 02 13 06.38 +06 18 00.5 w J47
2012-12-13 20:12:10 C 02 13 25.41 +06 19 41.4 r 168
2012-12-13 20:45:41 C 02 14 07.16 +06 23 52.9 r 168
2012-12-13 20:48:45 C 02 14 10.98 +06 24 15.7 r 168
2012-12-13 20:52:36 C 02 14 20.99 +06 25 27.6 w 213
2012-12-13 20:57:30 C 02 14 26.98 +06 26 04.6 w 213
2012-12-13 21:00:59 C 02 14 31.24 +06 26 30.8 w 213
2012-12-13 21:24:00 C 02 14 59.75 +06 29 32.3 w I57
2012-12-13 21:34:33 C 02 15 14.81 +06 31 18.2 w J47
2012-12-13 21:50:35 C 02 15 34.23 +06 33 18.8 w J47
2012-12-13 22:06:27 C 02 15 53.46 +06 35 17.3 w J47
2012-12-14 01:40:16 C 02 20 25.52 +07 00 58.4 10.9 r 726
2012-12-14 01:43:39 C 02 20 29.63 +07 01 23.5 11.1 r 726
2012-12-14 01:47:02 C 02 20 33.74 +07 01 48.5 10.8 r 726
2012-12-14 01:50:26 C 02 20 37.84 +07 02 13.7 10.7 r 726
2012-12-14 17:51:07 C 02 40 08.97 +08 55 32.1 u 089
2012-12-14 17:51:56 C 02 40 09.90 +08 55 37.5 u 089
2012-12-14 17:52:45 C 02 40 10.86 +08 55 43.2 u 089
2012-12-14 17:53:34 C 02 40 11.80 +08 55 48.7 u 089
2012-12-14 17:54:23 C 02 40 12.74 +08 55 54.3 u 089
2012-12-14 17:55:12 C 02 40 13.69 +08 55 59.8 u 089
2012-12-14 17:56:01 C 02 40 14.62 +08 56 05.1 u 089
2012-12-14 17:56:50 C 02 40 15.56 +08 56 10.6 u 089
2012-12-14 17:57:39 C 02 40 16.52 +08 56 16.2 u 089
2012-12-14 17:58:28 C 02 40 17.46 +08 56 21.8 u 089
2012-12-14 17:59:17 C 02 40 18.41 +08 56 27.4 u 089
2012-12-14 18:00:06 C 02 40 19.33 +08 56 32.7 u 089
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)