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
2021-02-09 03:52:01 C 03 06 01.79 +17 10 48.8 V 703
2021-02-09 04:00:13 C 03 06 03.65 +17 10 56.7 V 703
2021-02-09 04:08:26 C 03 06 05.50 +17 11 04.4 V 703
2021-02-10 05:49:58 C 03 11 55.42 +17 35 17.7 V T05
2021-02-10 05:54:35 C 03 11 56.45 +17 35 21.9 V T05
2021-02-10 06:03:09 C 03 11 58.35 +17 35 29.5 V T05
2021-02-10 06:23:54 C 03 12 02.98 +17 35 48.7 V T05
2021-02-11 02:57:26 C 03 16 40.76 +17 54 24.0 q U76
2021-02-11 03:22:16 C 03 16 46.39 +17 54 46.4 q U76
2021-02-11 03:49:21 C 03 16 52.32 +17 55 10.6 q U76
2021-02-12 06:53:00 C 03 22 54.61 +18 18 48.0 V T08
2021-02-12 06:57:00 C 03 22 55.50 +18 18 51.6 V T08
2021-02-12 07:05:00 C 03 22 57.25 +18 18 58.2 V T08
2021-02-12 07:20:16 C 03 23 00.60 +18 19 11.0 V T08
2021-02-14 15:47:47 C 03 35 25.22 +19 05 00.4 q C97
2021-02-14 15:48:30 C 03 35 25.38 +19 05 00.9 q C97
2021-02-14 15:49:14 C 03 35 25.53 +19 05 01.5 q C97
2021-02-14 15:49:57 C 03 35 25.68 +19 05 02.1 q C97
2021-02-14 15:50:39 C 03 35 25.83 +19 05 02.6 q C97
2021-02-14 15:51:22 C 03 35 25.98 +19 05 03.2 q C97
2021-02-15 16:25:50 C 03 40 44.76 +19 23 36.0 q C97
2021-02-15 16:26:32 C 03 40 44.92 +19 23 36.4 q C97
2021-02-15 16:27:15 C 03 40 45.09 +19 23 36.8 q C97
2021-02-15 16:27:59 C 03 40 45.22 +19 23 37.5 q C97
2021-02-15 16:28:41 C 03 40 45.43 +19 23 37.8 q C97
2021-02-15 16:29:24 C 03 40 45.53 +19 23 38.4 q C97
2021-02-16 02:45:30 C 03 42 58.02 +19 31 07.2 V V00
2021-02-16 02:52:22 C 03 42 59.46 +19 31 12.1 V V00
2021-02-16 02:59:13 C 03 43 00.90 +19 31 17.0 V V00
2021-02-16 03:06:04 C 03 43 02.36 +19 31 21.8 V V00
2021-02-16 05:41:07 C 03 43 35.59 +19 33 16.3 V T08
2021-02-16 05:47:49 C 03 43 37.01 +19 33 21.3 V T08
2021-02-16 05:55:14 C 03 43 38.57 +19 33 26.5 V T08
2021-02-16 06:10:31 C 03 43 41.80 +19 33 37.4 V T08
2021-02-17 15:24:27 C 03 50 45.50 +19 56 45.9 q C97
2021-02-17 15:25:11 C 03 50 45.63 +19 56 46.2 q C97
2021-02-17 15:25:53 C 03 50 45.80 +19 56 46.7 q C97
2021-02-17 15:26:36 C 03 50 45.95 +19 56 47.2 q C97
2021-02-22 07:24:06 C 04 13 47.08 +21 04 07.4 V T05
2021-02-22 08:13:06 C 04 13 56.80 +21 04 33.0 V T05
2021-02-22 08:21:33 C 04 13 58.49 +21 04 37.3 V T05
2021-02-22 08:29:17 C 04 14 00.00 +21 04 41.7 V T05
2021-02-23 18:08:52 C 04 20 41.49 +21 21 47.5 r 106
2021-02-23 18:27:06 C 04 20 45.02 +21 21 56.7 r 106
2021-02-23 18:45:21 C 04 20 48.54 +21 22 05.9 r 106
2021-02-24 05:29:39 C 04 22 54.69 +21 27 17.6 V 703
2021-02-24 05:37:21 C 04 22 56.18 +21 27 21.1 V 703
2021-02-24 05:38:08 C 04 22 56.70 +21 27 25.7 V T08
2021-02-24 05:40:47 C 04 22 57.21 +21 27 26.8 V T08
2021-02-24 05:42:50 C 04 22 57.60 +21 27 27.7 V T08
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)