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
1996-07-26 21:42:20 C 20 38 30.69 -18 23 45.1 z 046
1996-08-02 10:17:05 C 20 28 24.74 -19 04 13.0 c 608
1996-08-02 11:21:15 C 20 28 19.94 -19 04 30.4 c 608
1996-08-02 23:49:30 C 20 27 27.10 -19 08 00.9 z 108
1996-08-02 23:58:19 C 20 27 26.35 -19 08 02.0 z 108
1996-08-03 00:08:23 C 20 27 25.75 -19 08 04.3 z 108
1996-08-03 00:17:15 C 20 27 25.10 -19 08 08.5 z 108
1996-08-04 00:27:14 C 20 25 40.51 -19 14 52.4 z 108
1996-08-04 00:37:43 C 20 25 39.72 -19 14 54.5 z 108
1996-08-04 00:51:46 C 20 25 38.65 -19 14 57.7 z 108
1996-08-05 12:09:38 C 20 23 01.54 -19 24 52.1 c 608
1996-08-05 12:58:46 C 20 22 57.70 -19 25 05.4 c 608
1996-08-07 11:13:20 C 20 19 25.46 -19 38 22.7 c 608
1996-08-07 12:36:39 C 20 19 18.66 -19 38 45.5 c 608
1996-08-12 21:09:39 C 20 08 54.85 -20 16 14.9 z 587
1996-08-12 21:17:50 C 20 08 54.15 -20 16 17.1 z 587
1996-08-16 20:52:29 C 20 00 49.36 -20 43 42.5 z 611
1996-08-16 21:00:00 C 20 00 48.65 -20 43 45.2 z 611
1996-08-17 05:11:30 20 00 06.67 -20 46 02.3 z 710
1996-08-17 07:49:33 C 19 59 53.42 -20 46 42.8 c 566
1996-08-17 08:01:44 C 19 59 52.31 -20 46 46.3 c 566
1996-08-17 08:15:02 C 19 59 51.10 -20 46 50.0 c 566
1996-08-17 21:47:59 C 19 58 41.57 -20 50 42.2 z 611
1996-08-17 22:11:29 C 19 58 39.45 -20 50 48.6 z 611
1996-08-18 20:55:47 C 19 56 43.17 -20 57 06.7 z 046
1996-08-18 20:58:37 C 19 56 42.92 -20 57 07.7 z 046
1996-08-18 21:01:18 C 19 56 42.68 -20 57 08.3 z 046
1996-08-19 04:43:29 19 56 03.49 -20 59 14.2 z 710
1996-08-19 21:15:59 C 19 54 38.65 -21 03 45.1 z 611
1996-08-19 21:33:00 C 19 54 37.12 -21 03 49.7 z 611
1996-08-20 05:12:58 C 19 53 57.91 -21 05 52.1 i 711
1996-08-21 06:39:56 C 19 51 47.75 -21 12 40.2 i 711
1996-08-21 06:43:45 C 19 51 47.40 -21 12 41.0 i 711
1996-08-22 06:12:24 C 19 49 48.49 -21 18 51.1 i 711
1996-08-30 20:24:19 C 19 33 13.56 -22 07 46.0 z 046
1996-08-30 20:27:02 C 19 33 13.31 -22 07 46.3 z 046
1996-08-30 20:29:36 C 19 33 13.11 -22 07 47.0 z 046
1996-09-10 19:08:24 C 19 16 06.29 -22 54 27.0 z 610
1996-09-10 19:17:19 C 19 16 05.77 -22 54 28.2 z 610
1996-09-10 19:54:16 C 19 16 03.58 -22 54 33.0 z 610
1996-09-16 02:55:25 C 19 10 04.35 -23 11 14.2 z 689
1996-09-20 02:36:35 C 19 06 38.34 -23 21 46.2 i 711
1996-09-20 02:40:31 C 19 06 38.19 -23 21 46.5 i 711
1996-09-21 02:44:53 C 19 05 55.02 -23 24 12.1 i 711
1996-09-21 02:48:46 C 19 05 54.88 -23 24 12.3 i 711
1996-09-22 02:36:02 C 19 05 15.67 -23 26 31.3 i 711
1996-09-22 02:39:58 C 19 05 15.55 -23 26 31.9 i 711
1996-10-11 01:29:51 C 19 01 31.01 -24 02 20.1 i 711
1996-10-11 01:33:42 C 19 01 31.00 -24 02 20.5 i 711
1996-10-14 01:23:30 C 19 01 59.40 -24 07 52.4 i 711
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)