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
2001-02-20 07:33:54 C 08 38 23.43 +18 44 01.4 17.9 c 704
2001-02-20 07:54:33 C 08 38 22.98 +18 44 03.2 17.8 c 704
2001-02-20 08:15:06 C 08 38 22.40 +18 44 04.8 17.2 c 704
2001-02-20 22:31:21 C 08 38 07.12 +18 45 13.3 169
2001-02-20 22:37:32 C 08 38 06.98 +18 45 13.3 169
2001-02-20 22:43:58 C 08 38 06.87 +18 45 14.0 169
2001-02-20 22:49:29 C 08 38 06.73 +18 45 15.0 169
2001-02-20 22:54:34 C 08 38 06.63 +18 45 14.9 169
2001-02-22 05:43:11 C 08 37 36.34 +18 47 33.2 16.5 c 704
2001-02-22 05:44:04 C 08 37 36.24 +18 47 33.3 c 699
2001-02-22 06:00:54 C 08 37 35.94 +18 47 34.5 c 699
2001-02-22 06:03:23 C 08 37 35.87 +18 47 35.9 18.5 c 704
2001-02-22 06:17:42 C 08 37 35.63 +18 47 35.6 c 699
2001-02-22 06:23:34 C 08 37 35.47 +18 47 35.5 18.7 c 704
2001-02-22 06:34:33 C 08 37 35.32 +18 47 36.7 c 699
2001-02-22 06:44:47 C 08 37 35.11 +18 47 37.9 18.8 c 704
2001-02-25 03:07:55 C 08 36 44.74 +18 51 28.4 642
2001-02-25 03:27:20 C 08 36 44.26 +18 51 30.7 642
2001-02-25 04:06:28 C 08 36 43.96 +18 51 35.4 642
2001-02-25 21:26:52 C 08 36 34.42 +18 52 13.6 o 084
2001-02-27 00:33:00 C 08 36 22.55 +18 53 13.2 205
2001-02-27 01:30:59 C 08 36 22.08 +18 53 14.8 205
2001-02-27 02:03:00 C 08 36 21.88 +18 53 15.3 205
2001-02-27 20:23:23 C 08 36 16.59 +18 53 48.9 151
2001-02-27 20:32:34 C 08 36 16.50 +18 53 49.0 151
2001-02-27 20:36:51 C 08 36 16.48 +18 53 49.6 151
2001-03-04 01:53:17 C 08 36 10.42 +18 55 02.4 739
2001-03-05 01:48:14 C 08 36 15.09 +18 54 54.8 739
2001-03-08 21:01:12 C 08 36 52.85 +18 53 07.8 17.5 180
2001-03-08 23:26:15 C 08 36 54.00 +18 53 02.7 17.4 180
2001-03-09 05:47:23 C 08 36 57.87 +18 52 51.9 649
2001-03-09 06:43:15 C 08 36 58.35 +18 52 49.6 649
2001-03-09 07:32:50 C 08 36 58.73 +18 52 47.6 649
2001-03-13 02:47:32 C 08 38 10.07 +18 48 52.5 c 699
2001-03-13 03:23:24 C 08 38 10.54 +18 48 50.8 c 699
2001-03-13 03:59:24 C 08 38 11.01 +18 48 48.8 c 699
2001-03-13 04:35:27 C 08 38 11.49 +18 48 47.1 c 699
2001-03-18 04:20:42 C 08 40 24.15 +18 40 54.5 17.7 c 704
2001-03-18 04:39:14 C 08 40 24.52 +18 40 53.3 18.3 c 704
2001-03-18 04:58:28 C 08 40 24.91 +18 40 50.8 18.0 c 704
2001-03-18 05:17:00 C 08 40 25.24 +18 40 50.3 18.0 c 704
2001-03-18 05:35:33 C 08 40 25.63 +18 40 48.7 17.8 c 704
2001-03-20 03:11:58 C 08 41 27.23 +18 37 02.6 c 699
2001-03-20 03:43:26 C 08 41 27.93 +18 37 00.4 c 699
2001-03-20 04:14:57 C 08 41 28.62 +18 36 58.0 c 699
2001-03-20 04:46:33 C 08 41 29.29 +18 36 54.9 c 699
2001-03-24 04:20:21 C 08 43 55.65 +18 27 47.3 18.1 c 704
2001-03-24 04:38:37 C 08 43 56.13 +18 27 45.0 18.4 c 704
2001-03-24 04:57:02 C 08 43 56.59 +18 27 43.8 18.1 c 704
2001-03-24 05:16:39 C 08 43 57.09 +18 27 41.1 18.0 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)