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
1996-12-15 03:13:19 C 09 30 06.00 +11 14 30.9 z 962
1996-12-15 03:22:47 C 09 30 03.78 +11 14 47.1 z 962
1996-12-15 03:29:57 C 09 30 02.11 +11 14 59.3 z 962
1996-12-15 03:39:42 C 09 29 59.84 +11 15 15.8 z 962
1996-12-15 03:44:21 C 09 29 58.76 +11 15 23.7 z 962
1996-12-15 04:27:20 C 09 29 47.82 +11 16 21.5 z 046
1996-12-15 04:28:26 C 09 29 47.56 +11 16 23.4 z 046
1996-12-15 04:29:32 C 09 29 47.32 +11 16 25.2 z 046
1996-12-16 00:57:16 C 09 25 40.77 +11 49 16.1 z 118
1996-12-16 01:04:41 C 09 25 39.19 +11 49 27.5 z 118
1996-12-25 16:24:21 C 08 52 26.48 +15 49 47.7 388
1996-12-25 16:31:35 C 08 52 25.56 +15 49 53.0 388
1996-12-25 16:38:53 C 08 52 24.69 +15 49 58.3 388
1996-12-25 16:45:57 C 08 52 23.89 +15 50 03.1 388
1996-12-28 22:17:27 C 08 44 29.06 +16 40 17.2 z 605
1996-12-28 22:27:19 C 08 44 28.06 +16 40 23.5 z 605
1996-12-29 00:57:57 C 08 44 11.19 +16 41 55.6 z 121
1996-12-29 01:39:46 C 08 44 06.83 +16 42 20.0 z 121
1996-12-29 02:23:58 C 08 44 02.24 +16 42 44.9 z 121
1996-12-29 02:32:58 C 08 44 01.30 +16 42 49.7 z 121
1996-12-29 02:44:40 C 08 44 00.11 +16 42 56.3 z 121
1997-01-03 13:49:26 C 08 32 36.61 +17 50 25.3 z 355
1997-01-03 13:50:45 C 08 32 36.51 +17 50 25.7 z 355
1997-01-03 13:53:56 C 08 32 36.22 +17 50 27.4 z 355
1997-01-07 04:00:00 A 08 26 03.30 +18 25 45.2 C 056
1997-01-07 04:41:00 A 08 26 00.31 +18 25 58.8 C 056
1997-01-07 20:39:00 A 08 24 55.60 +18 31 58.0 C 056
1997-01-07 21:54:59 A 08 24 49.85 +18 32 27.8 C 056
1997-01-07 21:56:55 C 08 24 50.10 +18 32 26.2 z 605
1997-01-07 22:09:02 C 08 24 49.19 +18 32 31.0 z 605
1997-01-12 00:39:14 C 08 18 25.11 +19 05 19.6 13.3 z 124
1997-01-12 01:10:17 C 08 18 23.03 +19 05 29.2 13.3 z 124
1997-01-12 01:19:29 C 08 18 22.41 +19 05 31.8 13.2 z 124
1997-01-13 19:07:50 A 08 15 58.24 +19 17 27.0 C 056
1997-01-13 19:39:50 A 08 15 56.47 +19 17 35.9 C 056
1997-01-18 04:39:50 C 08 10 32.59 +19 44 09.4 z 861
1997-01-18 04:47:44 C 08 10 32.16 +19 44 10.8 z 861
1997-01-18 05:45:16 C 08 10 29.10 +19 44 22.4 z 861
1997-01-26 00:46:53 C 08 03 26.45 +20 17 14.1 14.2 z 124
1997-01-26 00:53:47 C 08 03 26.22 +20 17 15.3 14.2 z 124
1997-01-26 01:05:11 C 08 03 25.80 +20 17 16.8 14.3 z 124
1997-01-27 21:37:41 C 08 02 12.58 +20 23 08.9 z 629
1997-01-27 23:10:00 C 08 02 09.81 +20 23 21.0 z 629
1997-01-29 02:50:52 C 08 01 30.49 +20 26 39.9 z 704
1997-01-29 04:30:54 C 08 01 27.63 +20 26 53.3 z 704
1997-01-29 14:43:41 C 08 01 13.38 +20 28 00.0 14.4 327
1997-01-29 14:57:35 C 08 01 13.00 +20 28 01.6 327
1997-01-29 15:11:33 C 08 01 12.50 +20 28 03.2 327
1997-01-30 04:08:05 C 08 00 56.37 +20 29 26.4 z 704
1997-01-30 05:48:05 C 08 00 53.45 +20 29 38.4 z 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)