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
1997-01-31 05:09:11 C 08 00 25.66 +20 32 00.1 z 704
1997-01-31 05:49:11 C 08 00 24.42 +20 32 05.4 z 704
1997-02-04 03:06:29 C 07 58 57.11 +20 40 05.1 z 861
1997-02-04 04:30:38 C 07 58 55.62 +20 40 09.8 z 861
1997-02-04 21:04:26 C 07 58 45.57 +20 40 56.4 14.6 z 627
1997-02-04 21:18:00 C 07 58 45.38 +20 40 56.9 14.7 z 627
1997-02-04 21:23:29 C 07 58 45.28 +20 40 57.5 14.7 z 627
1997-02-05 01:01:36 C 07 58 43.06 +20 41 30.5 z 861
1997-02-05 03:10:12 C 07 58 41.10 +20 41 38.2 z 861
1997-02-06 07:38:18 C 07 58 26.52 +20 43 04.5 c 608
1997-02-06 08:36:49 C 07 58 25.77 +20 43 08.0 c 608
1997-02-07 07:19:25 C 07 58 16.60 +20 44 16.1 c 608
1997-02-07 08:41:34 C 07 58 15.75 +20 44 21.0 c 608
1997-02-10 05:35:47 C 07 58 00.99 +20 46 54.6 i 711
1997-02-10 05:39:50 C 07 58 00.97 +20 46 54.7 i 711
1997-02-11 05:03:07 C 07 58 00.80 +20 47 31.4 i 711
1997-02-11 05:06:59 C 07 58 00.79 +20 47 31.7 i 711
1997-02-16 21:55:34 C 07 58 43.12 +20 48 29.1 z 118
1997-02-16 22:19:44 C 07 58 43.27 +20 48 28.8 z 118
1997-02-16 22:28:05 C 07 58 43.34 +20 48 28.7 z 118
1997-02-17 18:57:09 C 07 58 56.49 +20 48 16.2 z 046
1997-02-17 18:58:57 C 07 58 56.52 +20 48 15.9 z 046
1997-02-17 19:00:44 C 07 58 56.53 +20 48 15.9 z 046
1997-02-27 00:06:59 C 08 02 40.31 +20 40 52.9 z 118
1997-02-27 00:16:58 C 08 02 40.52 +20 40 52.2 z 118
1997-02-27 00:22:39 C 08 02 40.62 +20 40 52.0 z 118
1997-02-28 22:24:08 C 08 03 46.06 +20 38 14.4 z 118
1997-02-28 22:30:08 C 08 03 46.19 +20 38 14.0 z 118
1997-02-28 22:36:38 C 08 03 46.34 +20 38 13.5 z 118
1997-03-07 05:55:00 08 07 59.58 +20 27 06.2 261
1997-03-07 06:54:59 08 08 01.31 +20 27 00.9 261
1997-03-15 05:01:37 C 08 14 33.73 +20 07 54.3 i 711
1997-03-15 05:10:54 C 08 14 34.11 +20 07 51.9 i 711
1997-03-16 03:47:12 C 08 15 25.73 +20 05 15.8 i 711
1997-03-16 03:58:32 C 08 15 26.14 +20 05 14.4 i 711
1997-03-17 03:42:34 C 08 16 21.18 +20 02 24.5 i 711
1997-03-17 03:47:18 C 08 16 21.35 +20 02 24.0 i 711
1997-05-02 06:59:22 C 09 10 47.16 +16 35 17.5 658
1997-05-02 07:09:54 C 09 10 47.66 +16 35 15.3 658
1997-05-02 07:16:51 C 09 10 48.06 +16 35 13.3 658
1997-05-02 07:22:50 C 09 10 48.38 +16 35 11.6 658
2000-06-13 05:59:15 C 21 14 03.19 -15 47 07.5 860
2000-06-13 06:18:50 C 21 14 03.86 -15 47 05.5 860
2000-06-13 06:36:29 C 21 14 04.39 -15 47 03.0 860
2000-07-03 06:33:14 C 21 21 54.58 -15 14 48.9 z 808
2000-07-03 07:32:39 C 21 21 54.72 -15 14 47.6 z 808
2000-07-05 17:05:21 C 21 22 04.34 -15 14 54.3 z 402
2000-07-10 06:21:48 C 21 21 49.65 -15 17 34.3 17.4 843
2000-07-10 07:17:02 C 21 21 49.18 -15 17 36.5 17.3 843
2000-07-10 08:17:20 C 21 21 48.66 -15 17 39.0 17.4 843
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)