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
2001-02-10 20:05:30 C 08 45 01.21 +18 14 59.6 151
2001-02-10 20:06:37 C 08 45 01.18 +18 15 00.0 151
2001-02-10 20:08:00 C 08 45 01.11 +18 15 00.2 151
2001-02-10 22:16:37 C 08 44 55.84 +18 15 25.1 952
2001-02-10 22:34:07 C 08 44 55.09 +18 15 28.1 952
2001-02-10 22:51:18 C 08 44 54.35 +18 15 31.2 952
2001-02-12 03:40:25 C 08 43 49.48 +18 20 15.8 642
2001-02-12 03:50:38 C 08 43 49.19 +18 20 17.0 642
2001-02-12 03:56:18 C 08 43 48.89 +18 20 17.9 642
2001-02-12 04:04:21 C 08 43 48.62 +18 20 19.2 642
2001-02-12 04:23:30 C 08 43 47.91 +18 20 22.8 642
2001-02-13 21:22:25 C 08 42 22.71 +18 26 34.8 127
2001-02-13 21:30:55 C 08 42 22.42 +18 26 36.0 127
2001-02-13 21:38:05 C 08 42 22.15 +18 26 37.0 127
2001-02-14 04:00:38 C 08 42 10.09 +18 27 30.6 642
2001-02-14 04:03:54 C 08 42 10.02 +18 27 31.3 642
2001-02-14 04:37:07 C 08 42 08.75 +18 27 35.2 642
2001-02-14 05:20:56 C 08 42 07.29 +18 27 43.0 642
2001-02-14 22:21:52 C 08 41 35.24 +18 30 01.0 127
2001-02-14 22:30:55 C 08 41 34.94 +18 30 02.3 127
2001-02-14 22:38:54 C 08 41 34.67 +18 30 03.3 127
2001-02-15 19:45:33 C 08 40 57.84 +18 32 46.8 610
2001-02-15 19:50:32 C 08 40 57.69 +18 32 47.5 610
2001-02-15 19:55:32 C 08 40 57.53 +18 32 48.2 610
2001-02-15 20:00:33 C 08 40 57.38 +18 32 48.9 610
2001-02-15 20:05:33 C 08 40 57.22 +18 32 49.6 610
2001-02-15 21:34:11 C 08 40 54.46 +18 32 59.8 127
2001-02-15 21:42:46 C 08 40 54.20 +18 33 00.8 127
2001-02-16 05:25:32 C 08 40 41.31 +18 34 00.5 c 699
2001-02-16 05:56:57 C 08 40 40.45 +18 34 04.6 c 699
2001-02-16 06:28:25 C 08 40 39.49 +18 34 08.5 c 699
2001-02-16 06:59:53 C 08 40 38.51 +18 34 12.1 c 699
2001-02-16 08:03:07 C 08 40 36.49 +18 34 18.7 c 699
2001-02-16 08:34:46 C 08 40 35.40 +18 34 21.7 c 699
2001-02-16 09:06:29 C 08 40 34.61 +18 34 25.0 c 699
2001-02-16 09:38:16 C 08 40 33.55 +18 34 30.0 c 699
2001-02-18 18:05:17 C 08 39 10.83 +18 40 32.6 151
2001-02-18 18:12:11 C 08 39 10.68 +18 40 33.2 151
2001-02-18 18:16:34 C 08 39 10.58 +18 40 33.8 151
2001-02-18 18:21:21 C 08 39 10.48 +18 40 34.1 151
2001-02-19 05:44:11 C 08 38 55.16 +18 41 44.4 16.2 c 704
2001-02-19 06:04:56 C 08 38 54.59 +18 41 46.5 16.2 c 704
2001-02-19 06:25:16 C 08 38 54.10 +18 41 48.4 16.4 c 704
2001-02-19 06:45:38 C 08 38 53.57 +18 41 50.5 16.8 c 704
2001-02-19 07:06:11 C 08 38 53.05 +18 41 52.3 16.4 c 704
2001-02-20 04:27:50 C 08 38 27.68 +18 43 42.6 642
2001-02-20 04:39:13 C 08 38 27.46 +18 43 43.7 642
2001-02-20 04:55:00 C 08 38 27.09 +18 43 45.3 642
2001-02-20 06:52:28 C 08 38 24.45 +18 43 58.6 16.6 c 704
2001-02-20 07:13:22 C 08 38 23.96 +18 44 00.7 17.5 c 704
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)