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
1989-01-12 12:49:59 A 04 52 02.1 +21 33 30 881
1989-01-12 12:51:00 A 04 52 02.43 +21 33 26.8 14.0 405
1989-01-12 12:53:59 A 04 52 03.25 +21 33 27.3 406
1989-01-12 13:50:30 A 04 52 19.20 +21 34 06.1 405
1989-01-12 14:37:59 A 04 52 33.75 +21 34 39.8 405
1989-01-12 21:51:12 A 04 54 44.25 +21 39 11.8 503
1989-01-13 11:13:30 A 04 58 37.78 +21 47 30.6 406
1989-01-13 12:45:00 A 04 59 03.07 +21 48 22.8 13.0 399
1989-01-13 12:56:00 A 04 59 06.00 +21 48 29.5 399
1989-01-16 11:21:37 A 05 17 24.77 +22 22 43.5 413
1989-01-16 11:23:07 A 05 17 25.06 +22 22 44.4 413
1989-01-16 11:24:39 A 05 17 25.43 +22 22 44.4 413
1989-01-16 13:45:14 A 05 17 57.79 +22 22 56.7 385
1989-01-16 13:53:30 A 05 17 59.80 +22 23 01.8 385
1989-01-16 14:01:45 A 05 18 01.36 +22 23 05.9 385
1989-01-16 14:48:29 A 05 18 12.18 +22 23 20.6 13.0 888
1989-01-16 14:50:59 A 05 18 12.68 +22 23 21.5 888
1989-01-17 11:14:40 A 05 22 55.48 +22 31 10.5 413
1989-01-17 11:19:39 A 05 22 56.58 +22 31 12.1 413
1989-01-17 11:24:39 A 05 22 57.66 +22 31 13.2 413
1989-01-23 17:20:55 A 05 51 29.24 +23 02 09.0 046
1989-01-23 17:27:21 A 05 51 30.16 +23 02 09.8 046
1989-01-24 10:42:29 A 05 54 14.68 +23 04 13.9 385
1989-01-24 10:47:29 A 05 54 15.23 +23 04 15.4 385
1989-01-24 11:03:29 A 05 54 17.51 +23 04 17.7 385
1989-01-24 18:42:26 A 05 55 28.94 +23 04 58.4 046
1989-01-24 18:48:50 A 05 55 29.80 +23 04 59.7 046
1989-01-24 19:36:00 05 55 37.01 +23 05 05.6 587
1989-01-24 19:53:50 05 55 39.78 +23 05 07.4 587
1989-01-25 17:14:01 A 05 58 53.43 +23 06 59.6 046
1989-01-25 17:20:17 A 05 58 54.25 +23 07 00.5 046
1989-01-25 19:30:59 A 05 59 12.90 +23 07 12.7 091
1989-01-26 18:18:55 A 06 02 30.68 +23 08 52.3 046
1989-01-26 18:27:39 A 06 02 31.91 +23 08 53.7 046
1989-01-26 20:34:30 A 06 02 49.33 +23 09 01.2 503
1989-01-26 21:40:01 A 06 02 58.10 +23 09 09.2 010
1989-01-26 21:47:59 A 06 02 59.08 +23 09 11.7 091
1989-01-26 22:00:01 A 06 03 00.77 +23 09 10.4 010
1989-01-26 22:10:00 A 06 03 02.21 +23 09 11.1 010
1989-01-26 22:15:10 A 06 03 02.74 +23 09 11.6 010
1989-01-27 08:59:49 A 06 04 32.37 +23 09 58.3 568
1989-01-27 11:07:41 A 06 04 50.76 +23 10 27.4 413
1989-01-27 11:12:40 A 06 04 51.37 +23 10 26.7 413
1989-01-27 11:17:40 A 06 04 52.06 +23 10 27.5 413
1989-01-27 12:20:00 A 06 05 00.42 +23 10 05.2 14.0 888
1989-01-27 13:09:00 A 06 05 06.83 +23 10 07.4 888
1989-01-27 18:13:14 A 06 05 49.37 +23 10 17.1 046
1989-01-27 18:19:35 A 06 05 50.23 +23 10 17.0 046
1989-01-27 21:38:00 A 06 06 16.51 +23 10 28.6 091
1989-01-28 11:55:46 A 06 08 10.82 +23 11 37.1 413
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)