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
2001-01-22 07:28:08 C 09 13 24.54 +16 01 08.2 14.2 c 704
2001-01-22 07:49:59 C 09 13 22.70 +16 01 17.0 c 704
2001-01-22 08:12:21 C 09 13 20.81 +16 01 26.0 14.7 c 704
2001-01-22 08:34:30 C 09 13 18.93 +16 01 35.0 14.7 c 704
2001-01-22 08:56:07 C 09 13 17.11 +16 01 43.4 c 704
2001-01-22 23:29:09 C 09 12 08.45 +16 07 22.5 o 084
2001-01-24 08:54:04 C 09 09 33.42 +16 20 24.3 d 691
2001-01-24 09:25:17 C 09 09 30.89 +16 20 35.9 d 691
2001-01-24 10:09:53 C 09 09 27.27 +16 20 52.4 d 691
2001-01-27 23:05:45 C 09 03 16.25 +16 51 03.1 151
2001-01-27 23:09:24 C 09 03 15.98 +16 51 04.3 151
2001-01-27 23:11:50 C 09 03 15.80 +16 51 05.2 151
2001-01-27 23:16:35 C 09 03 15.48 +16 51 07.0 151
2001-01-28 06:00:20 C 09 02 47.46 +16 53 22.6 750
2001-01-28 06:14:22 C 09 02 46.44 +16 53 27.2 750
2001-01-29 07:14:07 C 09 01 04.32 +17 01 37.5 14.9 c 704
2001-01-29 07:14:43 C 09 01 04.32 +17 01 37.8 14.7 c 704
2001-01-29 07:35:37 C 09 01 02.78 +17 01 44.1 15.5 c 704
2001-01-29 07:36:13 C 09 01 02.79 +17 01 45.2 15.4 c 704
2001-01-29 07:57:05 C 09 01 01.24 +17 01 50.7 15.6 c 704
2001-01-29 07:57:39 C 09 01 01.27 +17 01 49.5 15.3 c 704
2001-01-29 08:18:36 C 09 00 59.69 +17 01 57.6 14.7 c 704
2001-01-29 08:40:03 C 09 00 58.15 +17 02 04.4 14.5 c 704
2001-02-01 05:49:38 C 08 56 33.83 +17 22 50.3 c 699
2001-02-01 06:57:59 C 08 56 29.39 +17 23 10.0 c 699
2001-02-01 08:09:18 C 08 56 24.75 +17 23 30.1 c 699
2001-02-01 09:17:20 C 08 56 20.35 +17 23 48.9 c 699
2001-02-01 21:39:04 C 08 55 36.67 +17 27 14.5 108
2001-02-01 21:45:17 C 08 55 36.10 +17 27 16.2 108
2001-02-01 21:53:11 C 08 55 35.58 +17 27 18.4 108
2001-02-02 04:20:47 C 08 55 12.99 +17 29 03.5 739
2001-02-02 04:23:38 C 08 55 12.82 +17 29 04.1 739
2001-02-02 04:27:29 C 08 55 12.59 +17 29 05.2 739
2001-02-02 05:55:58 C 08 55 07.31 +17 29 31.3 14.9 c 704
2001-02-02 06:17:19 C 08 55 05.95 +17 29 37.3 15.1 c 704
2001-02-02 06:38:40 C 08 55 04.47 +17 29 43.1 16.7 c 704
2001-02-02 07:00:02 C 08 55 03.26 +17 29 49.3 15.1 c 704
2001-02-02 07:21:22 C 08 55 01.93 +17 29 55.1 15.3 c 704
2001-02-02 22:27:09 C 08 54 09.56 +17 33 48.6 o 084
2001-02-02 22:35:51 C 08 54 09.05 +17 33 50.8 o 084
2001-02-03 02:01:59 C 08 53 56.79 +17 34 47.4 205
2001-02-03 02:42:59 C 08 53 54.33 +17 34 57.0 205
2001-02-03 02:50:59 C 08 53 53.89 +17 35 00.0 205
2001-02-03 05:41:15 C 08 53 45.31 +17 35 48.8 15.5 c 704
2001-02-03 06:03:45 C 08 53 43.96 +17 35 54.7 15.3 c 704
2001-02-03 06:25:03 C 08 53 42.69 +17 36 00.6 15.8 c 704
2001-02-03 06:46:28 C 08 53 41.37 +17 36 06.0 15.2 c 704
2001-02-03 07:07:33 C 08 53 40.12 +17 36 11.7 15.6 c 704
2001-02-04 20:29:27 C 08 51 38.02 +17 45 22.3 o 084
2001-02-10 20:04:10 C 08 45 01.27 +18 14 59.6 151
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)