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
2008-07-25 23:34:41 C 21 20 41.02 -15 36 42.1 15.2 r C20
2008-07-25 23:57:56 C 21 20 40.46 -15 36 29.6 o A60
2008-07-26 00:40:39 C 21 20 39.06 -15 36 36.1 o A60
2008-07-26 01:23:18 C 21 20 37.63 -15 36 43.5 o A60
2008-07-29 04:00:51 C 21 18 07.77 -15 50 47.2 r H53
2008-07-29 04:01:58 C 21 18 07.75 -15 50 47.8 r H53
2008-07-29 04:04:34 C 21 18 07.66 -15 50 48.1 r H53
2008-07-29 04:05:44 C 21 18 07.62 -15 50 48.2 r H53
2008-07-29 04:07:06 C 21 18 07.57 -15 50 48.8 r H53
2008-07-29 04:09:59 C 21 18 07.45 -15 50 49.0 r H53
2008-07-30 06:40:21 C 21 17 06.97 -15 56 14.7 r 703
2008-07-30 06:41:07 C 21 17 06.90 -15 56 15.1 r 703
2008-07-30 06:51:12 C 21 17 06.54 -15 56 17.0 r 703
2008-07-30 06:51:58 C 21 17 06.46 -15 56 17.5 r 703
2008-07-30 07:02:02 C 21 17 06.07 -15 56 19.1 r 703
2008-07-30 07:02:47 C 21 17 06.00 -15 56 19.7 r 703
2008-07-30 07:10:36 C 21 17 05.67 -15 56 21.1 r G96
2008-07-30 07:12:49 C 21 17 05.60 -15 56 21.7 r 703
2008-07-30 07:13:35 C 21 17 05.60 -15 56 21.9 r 703
2008-07-30 07:17:00 C 21 17 05.42 -15 56 22.5 r G96
2008-07-30 07:23:32 C 21 17 05.13 -15 56 23.8 r G96
2008-07-30 07:30:05 C 21 17 04.84 -15 56 25.3 r G96
2008-07-30 22:29:32 C 21 16 29.47 -15 59 38.8 r 170
2008-07-30 22:31:09 C 21 16 29.40 -15 59 39.1 r 170
2008-07-30 22:37:07 C 21 16 29.12 -15 59 40.6 r 170
2008-08-01 06:03:02 C 21 15 10.29 -16 06 40.1 r H53
2008-08-01 06:04:07 C 21 15 10.25 -16 06 40.4 r H53
2008-08-01 06:05:15 C 21 15 10.19 -16 06 40.5 r H53
2008-08-01 06:06:40 C 21 15 10.12 -16 06 41.1 r H53
2008-08-01 06:08:09 C 21 15 10.06 -16 06 41.3 r H53
2008-08-01 06:09:38 C 21 15 09.99 -16 06 41.5 r H53
2008-08-02 04:58:14 C 21 14 10.14 -16 12 00.5 r H53
2008-08-02 04:59:32 C 21 14 10.07 -16 12 00.7 r H53
2008-08-02 05:00:50 C 21 14 10.01 -16 12 01.1 r H53
2008-08-02 05:02:03 C 21 14 09.96 -16 12 01.2 r H53
2008-08-02 05:03:29 C 21 14 09.88 -16 12 01.8 r H53
2008-08-02 05:05:07 C 21 14 09.81 -16 12 02.2 r H53
2008-08-02 23:53:44 C 21 13 17.92 -16 16 35.6 v 204
2008-08-03 00:31:21 C 21 13 16.04 -16 16 44.7 v 204
2008-08-03 01:01:23 C 21 13 14.55 -16 16 51.8 v 204
2008-08-03 04:47:20 C 21 13 04.62 -16 17 46.0 r H53
2008-08-03 04:48:35 C 21 13 04.56 -16 17 46.5 r H53
2008-08-03 04:49:55 C 21 13 04.49 -16 17 46.7 r H53
2008-08-03 04:54:26 C 21 13 04.26 -16 17 47.9 r H53
2008-08-03 04:56:03 C 21 13 04.18 -16 17 48.2 r H53
2008-08-03 04:57:27 C 21 13 04.10 -16 17 48.6 r H53
2008-08-03 19:23:52 C 21 12 23.24 -16 21 21.6 c 097
2008-08-03 19:38:04 C 21 12 22.51 -16 21 25.5 c 097
2008-08-03 19:53:26 C 21 12 21.67 -16 21 30.0 c 097
2008-08-03 20:07:40 C 21 12 21.00 -16 21 33.3 c 097
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)