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
2004-09-13 12:29:04 C 21 49 12.99 -16 36 49.4 r 423
2004-09-13 12:45:04 C 21 49 11.89 -16 37 03.7 r 423
2004-09-13 14:17:38 C 21 49 07.09 -16 39 58.3 o 360
2004-09-13 14:27:40 C 21 49 06.40 -16 40 07.4 o 360
2004-09-13 20:28:40 C 21 48 51.70 -16 45 52.0 r 160
2004-09-13 20:29:44 C 21 48 51.62 -16 45 53.0 r 160
2004-09-13 20:30:06 C 21 48 51.61 -16 45 53.3 r 160
2004-09-13 20:30:28 C 21 48 51.58 -16 45 53.8 r 160
2004-09-13 20:30:50 C 21 48 51.56 -16 45 54.0 r 160
2004-09-13 20:31:32 C 21 48 51.53 -16 45 55.2 r 160
2004-09-13 20:31:53 C 21 48 51.47 -16 45 54.8 r 160
2004-09-13 20:32:13 C 21 48 51.45 -16 45 55.5 r 160
2004-09-13 20:32:34 C 21 48 51.44 -16 45 55.8 r 160
2004-09-13 20:32:55 C 21 48 51.42 -16 45 56.2 r 160
2004-09-13 20:33:15 C 21 48 51.39 -16 45 56.3 r 160
2004-09-13 20:33:36 C 21 48 51.37 -16 45 56.7 r 160
2004-09-13 20:34:01 C 21 48 51.34 -16 45 57.2 r 160
2004-09-13 20:34:22 C 21 48 51.31 -16 45 57.5 r 160
2004-09-13 20:34:43 C 21 48 51.30 -16 45 57.8 r 160
2004-09-13 20:35:03 C 21 48 51.28 -16 45 58.0 r 160
2004-09-13 20:35:24 C 21 48 51.25 -16 45 58.6 r 160
2004-09-13 20:35:44 C 21 48 51.22 -16 45 58.6 r 160
2004-09-13 20:36:05 C 21 48 51.21 -16 45 59.3 r 160
2004-09-13 20:36:26 C 21 48 51.18 -16 45 59.4 r 160
2004-09-13 20:37:07 C 21 48 51.14 -16 46 00.1 r 160
2004-09-13 20:37:28 C 21 48 51.12 -16 46 00.7 r 160
2004-09-13 20:38:32 C 21 48 51.04 -16 46 01.5 r 160
2004-09-13 20:38:53 C 21 48 51.01 -16 46 01.7 r 160
2004-09-14 03:58:00 C 21 48 27.58 -16 53 02.1 r 932
2004-09-14 04:00:00 C 21 48 27.44 -16 53 03.9 r 932
2004-09-14 04:07:00 C 21 48 26.95 -16 53 10.5 r 932
2004-09-14 04:14:59 C 21 48 26.40 -16 53 18.5 r 932
2004-09-14 05:41:37 C 21 48 21.80 -16 54 37.1 r H41
2004-09-14 05:44:05 C 21 48 21.63 -16 54 39.6 r H41
2004-09-14 05:44:41 C 21 48 21.57 -16 54 40.3 r H41
2004-09-14 05:45:49 C 21 48 21.51 -16 54 41.3 r H41
2004-09-14 05:48:09 C 21 48 21.33 -16 54 43.5 r H41
2004-09-14 05:49:25 C 21 48 21.24 -16 54 44.7 r H41
2004-09-14 05:54:03 C 21 48 20.91 -16 54 49.2 r H41
2004-09-14 11:28:39 C 21 48 06.96 -16 58 46.7 r 423
2004-09-14 11:49:24 C 21 48 06.65 -17 00 43.8 r 379
2004-09-14 11:50:53 C 21 48 06.55 -17 00 45.3 r 379
2004-09-14 11:52:22 C 21 48 06.44 -17 00 47.0 r 379
2004-09-14 11:53:51 C 21 48 06.32 -17 00 48.6 r 379
2004-09-14 11:56:49 C 21 48 06.11 -17 00 51.6 r 379
2004-09-14 11:58:18 C 21 48 06.01 -17 00 53.3 r 379
2004-09-14 12:01:16 C 21 48 05.78 -17 00 56.0 r 379
2004-09-14 12:04:14 C 21 48 05.57 -17 00 59.2 r 379
2004-09-14 12:08:39 C 21 48 04.02 -16 59 27.3 r 423
2004-09-14 12:40:39 C 21 48 01.65 -16 59 59.5 r 423
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)