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
2008-08-03 20:22:11 C 21 12 20.22 -16 21 37.3 c 097
2008-08-04 00:00:44 C 21 12 09.42 -16 22 36.2 c J93
2008-08-04 00:03:48 C 21 12 09.21 -16 22 36.8 c J93
2008-08-04 00:06:51 C 21 12 09.05 -16 22 37.9 c J93
2008-08-04 01:16:39 C 21 12 05.65 -16 22 52.1 r J51
2008-08-04 01:22:41 C 21 12 05.33 -16 22 53.7 r J51
2008-08-04 01:28:43 C 21 12 05.01 -16 22 55.2 r J51
2008-08-04 05:16:05 C 21 11 54.46 -16 23 52.9 14.6 c 704
2008-08-04 05:33:04 C 21 11 53.55 -16 23 57.6 14.7 c 704
2008-08-04 05:49:43 C 21 11 52.68 -16 24 02.0 14.8 c 704
2008-08-04 06:06:21 C 21 11 51.80 -16 24 06.5 15.0 c 704
2008-08-04 06:23:05 C 21 11 50.91 -16 24 10.6 14.9 c 704
2008-08-05 00:37:47 C 21 10 56.42 -16 28 53.7 r J51
2008-08-05 00:43:32 C 21 10 56.11 -16 28 55.3 r J51
2008-08-05 00:49:18 C 21 10 55.80 -16 28 56.8 r J51
2008-08-05 04:24:35 C 21 10 45.17 -16 29 54.8 r H53
2008-08-05 04:25:54 C 21 10 45.11 -16 29 55.0 r H53
2008-08-05 04:27:04 C 21 10 45.04 -16 29 55.6 r H53
2008-08-05 04:29:21 C 21 10 44.94 -16 29 56.3 r H53
2008-08-05 04:30:32 C 21 10 44.87 -16 29 56.4 r H53
2008-08-05 04:32:00 C 21 10 44.75 -16 29 56.7 r H53
2008-08-07 13:28:03 C 21 07 43.11 -16 45 12.2 r 428
2008-08-07 14:04:25 C 21 07 40.92 -16 45 22.4 r 428
2008-08-08 04:12:22 C 21 06 53.97 -16 49 42.5 r H53
2008-08-08 04:13:42 C 21 06 53.88 -16 49 42.7 r H53
2008-08-08 04:15:00 C 21 06 53.81 -16 49 43.3 r H53
2008-08-08 04:17:33 C 21 06 53.65 -16 49 44.0 r H53
2008-08-08 04:19:01 C 21 06 53.56 -16 49 44.1 r H53
2008-08-08 04:20:29 C 21 06 53.46 -16 49 44.8 r H53
2008-08-09 03:56:32 C 21 05 32.16 -16 56 37.3 r H53
2008-08-09 03:57:59 C 21 05 32.05 -16 56 37.8 r H53
2008-08-09 03:59:30 C 21 05 31.95 -16 56 38.1 r H53
2008-08-09 04:01:00 C 21 05 31.88 -16 56 38.9 r H53
2008-08-09 04:02:35 C 21 05 31.77 -16 56 39.4 r H53
2008-08-09 04:04:17 C 21 05 31.66 -16 56 39.5 r H53
2008-08-09 05:17:00 C 21 05 26.69 -16 56 41.7 r 808
2008-08-09 05:26:59 C 21 05 26.08 -16 56 44.5 r 808
2008-08-09 05:37:00 C 21 05 25.46 -16 56 47.5 r 808
2008-08-10 00:53:39 C 21 04 16.99 -17 02 52.9 r J53
2008-08-10 01:02:21 C 21 04 16.42 -17 02 55.4 r J53
2008-08-10 01:05:12 C 21 04 16.25 -17 02 56.3 r J53
2008-08-10 03:09:55 C 21 04 09.67 -17 03 32.8 r H53
2008-08-10 03:11:26 C 21 04 09.57 -17 03 33.2 r H53
2008-08-10 03:12:35 C 21 04 09.51 -17 03 33.7 r H53
2008-08-10 03:13:45 C 21 04 09.43 -17 03 34.2 r H53
2008-08-10 03:15:03 C 21 04 09.33 -17 03 34.5 r H53
2008-08-10 03:16:26 C 21 04 09.25 -17 03 34.8 r H53
2008-08-10 03:51:59 C 21 04 06.61 -17 03 26.3 r 808
2008-08-10 04:00:59 C 21 04 06.06 -17 03 29.1 r 808
2008-08-10 04:11:00 C 21 04 05.39 -17 03 32.1 r 808
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)