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
2000-07-11 09:25:41 C 21 21 38.37 -15 18 49.4 17.3 843
2000-07-11 09:33:53 C 21 21 38.30 -15 18 49.9 17.4 843
2000-07-11 09:42:14 C 21 21 38.13 -15 18 50.9 17.6 843
2000-07-13 06:14:36 C 21 21 14.68 -15 21 28.1 i 739
2000-07-13 06:24:20 C 21 21 14.56 -15 21 28.8 i 739
2000-07-13 06:40:24 C 21 21 14.32 -15 21 29.6 i 739
2000-07-22 16:37:35 C 21 16 57.85 -15 45 51.9 900
2000-07-22 16:42:56 C 21 16 57.65 -15 45 53.2 900
2000-07-23 07:08:10 C 21 16 33.47 -15 48 06.1 i 739
2000-07-23 07:20:32 C 21 16 33.06 -15 48 08.0 i 739
2000-07-23 07:27:58 C 21 16 32.81 -15 48 09.1 i 739
2000-07-23 07:50:31 C 21 16 32.25 -15 48 11.7 15.4 c 704
2000-07-23 07:50:38 C 21 16 32.22 -15 48 11.8 15.8 c 704
2000-07-23 08:09:53 C 21 16 31.62 -15 48 14.5 15.9 c 704
2000-07-23 08:09:59 C 21 16 31.60 -15 48 14.6 16.1 c 704
2000-07-23 08:29:20 C 21 16 31.00 -15 48 18.1 16.3 c 704
2000-07-23 08:44:13 C 21 16 30.68 -15 48 20.4 c 670
2000-07-23 08:48:39 C 21 16 30.31 -15 48 20.9 16.5 c 704
2000-07-23 08:48:46 C 21 16 30.33 -15 48 20.2 16.5 c 704
2000-07-23 09:08:01 C 21 16 29.68 -15 48 23.3 16.2 c 704
2000-07-23 09:08:07 C 21 16 29.67 -15 48 23.8 16.3 c 704
2000-07-23 09:26:59 C 21 16 29.28 -15 48 27.1 c 670
2000-07-23 10:20:53 C 21 16 27.53 -15 48 35.2 c 670
2000-07-25 04:31:12 C 21 15 09.72 -15 55 22.6 o 809
2000-07-25 06:11:00 C 21 15 06.09 -15 55 40.1 o 809
2000-07-25 08:09:10 C 21 15 01.75 -15 56 00.4 o 809
2000-07-26 23:37:01 C 21 13 40.15 -16 03 34.3 z 151
2000-07-26 23:41:42 C 21 13 39.99 -16 03 35.2 z 151
2000-07-26 23:44:05 C 21 13 39.88 -16 03 35.7 z 151
2000-07-26 23:50:20 C 21 13 39.63 -16 03 36.9 z 151
2000-07-29 14:19:15 C 21 11 12.79 -16 16 24.8 m 349
2000-07-29 14:22:18 C 21 11 12.68 -16 16 25.1 m 349
2000-07-29 14:23:27 C 21 11 12.65 -16 16 25.4 m 349
2000-07-30 22:42:33 C 21 09 48.48 -16 23 41.0 108
2000-07-30 22:46:32 C 21 09 48.32 -16 23 42.0 108
2000-07-30 22:51:38 C 21 09 48.03 -16 23 43.7 108
2000-07-30 22:57:26 C 21 09 47.77 -16 23 44.8 108
2000-07-31 23:04:16 C 21 08 41.30 -16 29 26.6 z 151
2000-07-31 23:07:46 C 21 08 41.12 -16 29 27.4 z 151
2000-07-31 23:12:53 C 21 08 40.87 -16 29 28.8 z 151
2000-07-31 23:16:16 C 21 08 40.70 -16 29 29.5 z 151
2000-08-01 07:28:53 C 21 08 17.22 -16 31 26.3 15.1 c 704
2000-08-01 07:49:50 C 21 08 16.15 -16 31 31.5 15.3 c 704
2000-08-01 08:10:44 C 21 08 15.05 -16 31 37.0 15.3 c 704
2000-08-01 08:32:16 C 21 08 14.00 -16 31 42.4 15.7 c 704
2000-08-01 08:53:13 C 21 08 12.85 -16 31 47.1 15.3 c 704
2000-08-01 23:02:37 C 21 07 32.21 -16 35 19.9 g 517
2000-08-01 23:08:22 C 21 07 31.82 -16 35 21.1 g 517
2000-08-01 23:16:03 C 21 07 31.50 -16 35 22.6 g 517
2000-08-01 23:25:34 C 21 07 31.00 -16 35 24.5 g 517
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)