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
2017-01-03 07:24:03 C 01 34 08.71 +08 40 46.4 L T05
2017-01-03 07:45:31 C 01 34 16.57 +08 41 34.4 L T05
2017-01-03 16:55:06 C 01 37 43.70 +09 01 54.2 u 107
2017-01-03 16:58:27 C 01 37 44.90 +09 02 02.2 u 107
2017-01-03 17:01:46 C 01 37 46.14 +09 02 09.2 u 107
2017-01-03 17:05:07 C 01 37 47.36 +09 02 16.3 u 107
2017-01-03 21:23:07 C 01 39 21.97 +09 11 49.8 q 160
2017-01-03 21:25:05 C 01 39 22.65 +09 11 53.6 q 160
2017-01-03 21:27:02 C 01 39 23.44 +09 11 58.0 q 160
2017-01-04 18:09:16 C 01 47 07.10 +09 57 21.4 q Z52
2017-01-04 19:00:27 C 01 47 25.77 +09 59 12.5 q Z52
2017-01-04 22:23:53 C 01 48 40.15 +10 06 30.7 q Z52
2017-01-05 01:53:51 C 01 49 58.63 +10 14 12.4 q H45
2017-01-05 01:54:45 C 01 49 58.95 +10 14 14.2 q H45
2017-01-05 01:55:47 C 01 49 59.33 +10 14 16.5 q H45
2017-01-05 01:56:33 C 01 49 59.61 +10 14 18.1 q H45
2017-01-05 01:57:51 C 01 50 00.08 +10 14 20.9 q H45
2017-01-05 01:58:48 C 01 50 00.42 +10 14 22.9 q H45
2017-01-05 09:03:10 S 01 52 37.66 +10 29 43.5 L C51
2017-01-05 12:11:51 S 01 53 47.32 +10 36 23.9 L C51
2017-01-05 15:20:33 S 01 54 56.90 +10 43 02.6 L C51
2017-01-05 16:54:48 S 01 55 31.63 +10 46 21.3 L C51
2017-01-05 17:33:42 C 01 55 46.31 +10 47 22.6 14.6 q K46
2017-01-05 17:46:30 C 01 55 50.94 +10 47 49.5 14.5 q K46
2017-01-05 17:57:19 C 01 55 54.85 +10 48 12.3 14.2 q K46
2017-01-05 18:18:08 C 01 56 02.38 +10 48 56.1 14.8 q K46
2017-01-05 18:29:03 S 01 56 06.34 +10 49 39.6 L C51
2017-01-05 20:03:29 S 01 56 41.09 +10 52 57.4 L C51
2017-01-05 21:37:44 S 01 57 15.75 +10 56 14.8 L C51
2017-01-05 23:11:59 S 01 57 50.40 +10 59 31.8 L C51
2017-01-06 02:20:40 S 01 58 59.70 +11 06 04.5 L C51
2017-01-06 05:29:21 S 02 00 08.90 +11 12 35.2 L C51
2017-01-08 03:02:39 C 02 16 39.34 +12 43 14.5 q H45
2017-01-08 03:04:22 C 02 16 39.93 +12 43 17.6 q H45
2017-01-08 03:05:29 C 02 16 40.31 +12 43 19.8 q H45
2017-01-08 03:06:33 C 02 16 40.70 +12 43 21.9 q H45
2017-01-08 03:07:36 C 02 16 41.06 +12 43 23.9 q H45
2017-01-08 03:08:20 C 02 16 41.32 +12 43 25.2 q H45
2017-01-09 01:51:13 C 02 24 46.96 +13 26 08.6 q H45
2017-01-09 01:52:24 C 02 24 47.37 +13 26 10.7 q H45
2017-01-09 01:53:54 C 02 24 47.89 +13 26 13.5 q H45
2017-01-09 01:54:49 C 02 24 48.21 +13 26 15.2 q H45
2017-01-09 01:55:42 C 02 24 48.51 +13 26 16.7 q H45
2017-01-09 01:56:36 C 02 24 48.82 +13 26 18.4 q H45
2017-01-09 21:20:24 C 02 31 36.52 +14 01 14.1 q 160
2017-01-09 21:23:21 C 02 31 37.54 +14 01 19.3 q 160
2017-01-09 21:26:18 C 02 31 38.59 +14 01 24.4 q 160
2017-01-13 12:18:26 C 03 00 55.33 +16 21 33.7 q D29
2017-01-13 12:47:34 C 03 01 04.56 +16 22 15.9 q D29
2017-01-13 13:16:41 C 03 01 13.80 +16 22 57.8 q D29
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)