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
2000-09-10 19:39:57 C 19 49 41.53 -22 08 10.5 118
2000-09-10 20:44:59 C 19 49 35.15 -22 08 33.2 611
2000-09-10 20:49:48 C 19 49 34.64 -22 08 34.7 611
2000-09-11 19:34:07 C 19 47 24.87 -22 16 21.8 c 046
2000-09-11 19:36:59 C 19 47 24.57 -22 16 22.8 c 046
2000-09-11 19:38:47 C 19 47 24.39 -22 16 23.4 c 046
2000-09-20 02:39:16 C 19 28 27.30 -23 21 57.3 14.4 c 704
2000-09-20 03:00:44 C 19 28 24.87 -23 22 04.9 14.4 c 704
2000-09-20 03:22:10 C 19 28 22.69 -23 22 11.5 14.2 c 704
2000-09-20 03:43:32 C 19 28 20.41 -23 22 18.2 13.9 c 704
2000-09-20 04:04:52 C 19 28 18.15 -23 22 24.9 14.1 c 704
2000-09-24 23:48:46 C 19 16 57.47 -23 59 07.6 z 859
2000-09-24 23:51:39 C 19 16 57.12 -23 59 08.4 z 859
2000-09-24 23:54:33 C 19 16 56.82 -23 59 09.3 z 859
2000-09-26 12:06:09 C 19 13 15.52 -24 11 30.7 m 347
2000-09-26 12:07:55 C 19 13 15.29 -24 11 31.3 m 347
2000-09-26 12:11:10 C 19 13 14.93 -24 11 31.7 m 347
2000-11-14 13:01:53 C 11 43 17.64 -02 12 00.4 l 673
2000-11-14 13:09:16 C 11 43 15.74 -02 11 45.4 l 673
2000-11-14 13:16:40 C 11 43 13.78 -02 11 30.5 l 673
2000-11-14 13:24:35 C 11 43 11.70 -02 11 14.2 l 673
2000-11-15 12:20:00 C 11 37 47.67 -01 26 07.8 l 673
2000-11-15 12:27:38 C 11 37 45.88 -01 25 53.7 l 673
2000-11-15 12:35:28 C 11 37 44.01 -01 25 38.7 l 673
2000-11-15 12:42:47 C 11 37 42.26 -01 25 25.1 l 673
2000-11-15 12:49:17 C 11 37 40.70 -01 25 12.9 l 673
2000-11-15 12:54:19 C 11 37 39.51 -01 25 03.5 l 673
2000-11-15 12:59:13 C 11 37 38.36 -01 24 54.3 l 673
2000-11-15 13:04:18 C 11 37 37.11 -01 24 44.7 l 673
2000-11-15 13:09:00 C 11 37 36.00 -01 24 35.8 l 673
2000-11-15 13:12:33 C 11 37 35.16 -01 24 29.3 l 673
2000-11-15 13:16:42 C 11 37 34.18 -01 24 21.4 l 673
2000-11-15 13:20:16 C 11 37 33.30 -01 24 14.7 l 673
2000-11-18 19:33:42 C 11 22 19.60 +00 44 16.4 m 349
2000-11-18 19:35:55 C 11 22 19.19 +00 44 20.0 m 349
2000-11-24 17:31:47 C 11 03 21.30 +03 28 16.6 m 428
2000-11-24 17:34:29 C 11 03 20.99 +03 28 18.9 m 428
2000-12-15 18:50:12 C 10 26 26.58 +08 34 27.0 349
2000-12-15 18:51:59 C 10 26 26.43 +08 34 28.2 349
2000-12-15 18:53:09 C 10 26 26.35 +08 34 28.5 349
2000-12-15 18:54:12 C 10 26 26.26 +08 34 28.8 349
2000-12-21 10:52:57 C 10 17 10.30 +09 41 53.6 14.9 c 704
2000-12-21 11:14:37 C 10 17 08.57 +09 42 04.3 15.3 c 704
2000-12-21 11:36:25 C 10 17 06.84 +09 42 15.2 14.7 c 704
2000-12-21 11:58:10 C 10 17 05.14 +09 42 26.2 14.7 c 704
2000-12-21 12:19:49 C 10 17 03.41 +09 42 36.7 14.9 c 704
2000-12-24 17:19:14 C 10 11 24.68 +10 21 39.6 903
2000-12-24 17:25:03 C 10 11 24.19 +10 21 42.5 903
2000-12-24 17:31:05 C 10 11 23.70 +10 21 45.6 903
2001-01-02 09:08:53 C 09 54 36.04 +12 10 16.6 15.1 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)