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
1989-01-28 12:00:45 A 06 08 11.47 +23 11 37.3 413
1989-01-28 18:11:45 A 06 09 00.98 +23 11 21.0 046
1989-01-28 18:18:05 A 06 09 01.80 +23 11 21.7 046
1989-01-29 14:08:00 A 06 11 33.51 +23 12 05.4 14.5 888
1989-01-29 14:50:00 A 06 11 38.61 +23 12 06.0 888
1989-01-29 18:45:59 A 06 12 10.00 +23 12 08.7 C 571
1989-01-29 19:09:00 A 06 12 12.84 +23 12 09.6 C 571
1989-01-30 12:20:30 A 06 14 19.93 +23 13 00.8 413
1989-01-30 12:25:30 A 06 14 20.50 +23 13 01.3 413
1989-01-30 12:30:29 A 06 14 21.08 +23 13 01.1 413
1989-01-30 20:59:00 A 06 15 23.53 +23 12 40.5 C 571
1989-01-30 21:54:00 A 06 15 29.67 +23 12 40.3 C 571
1989-01-31 12:05:44 A 06 17 11.67 +23 13 19.0 413
1989-01-31 12:10:45 A 06 17 12.26 +23 13 18.8 413
1989-01-31 12:15:45 A 06 17 12.77 +23 13 19.0 413
1989-01-31 20:24:59 A 06 18 10.84 +23 12 56.1 C 587
1989-01-31 20:50:00 A 06 18 13.63 +23 12 57.1 C 587
1989-02-01 11:27:08 A 06 19 55.22 +23 13 24.9 413
1989-02-01 11:31:39 A 06 19 55.71 +23 13 24.4 413
1989-02-01 11:35:45 A 06 19 56.15 +23 13 24.5 413
1989-02-01 20:37:00 A 06 20 58.00 +23 12 54.4 C 571
1989-02-01 21:38:59 A 06 21 04.79 +23 12 55.4 C 571
1989-02-02 03:35:02 A 06 21 44.67 +23 12 54.8 801
1989-02-02 19:19:24 A 06 23 30.39 +23 12 44.6 046
1989-02-02 19:25:59 A 06 23 31.06 +23 12 44.3 046
1989-02-03 07:03:59 A 06 24 47.41 +23 12 45.6 568
1989-02-03 07:20:00 A 06 24 48.93 +23 12 44.1 568
1989-02-03 13:00:29 A 06 25 25.29 +23 12 34.8 15.0 888
1989-02-03 13:42:29 A 06 25 29.56 +23 12 33.9 888
1989-02-03 20:28:05 A 06 26 13.66 +23 12 21.7 046
1989-02-03 20:34:35 A 06 26 14.35 +23 12 21.2 046
1989-02-04 18:53:29 A 06 28 36.09 +23 11 53.9 14.5 071
1989-02-04 20:06:19 A 06 28 43.25 +23 11 52.3 071
1989-02-05 17:42:14 A 06 30 57.00 +23 11 14.7 071
1989-02-05 18:13:33 A 06 31 00.37 +23 11 15.2 071
1989-02-05 19:00:55 A 06 31 04.30 +23 11 13.3 071
1989-02-05 19:10:56 A 06 31 05.32 +23 11 12.6 071
1989-02-05 19:23:55 A 06 31 07.24 +23 11 13.9 071
1989-02-05 23:18:40 A 06 31 29.25 +23 11 01.6 071
1989-02-06 18:10:37 A 06 33 23.66 +23 10 23.7 071
1989-02-06 19:14:05 A 06 33 29.63 +23 10 20.7 071
1989-02-08 02:25:10 A 06 36 31.64 +23 09 04.6 801
1989-02-08 09:48:40 A 06 37 14.05 +23 09 08.9 17.1 474
1989-02-08 10:02:00 A 06 37 15.36 +23 09 07.6 474
1989-02-11 14:19:59 A 06 44 16.69 +23 04 33.0 15.5 888
1989-02-11 15:08:00 A 06 44 20.81 +23 04 29.8 888
1989-02-13 10:48:59 A 06 48 11.42 +23 02 00.5 474
1989-02-13 11:21:25 A 06 48 14.33 +23 01 53.2 474
1989-02-26 11:32:00 A 07 13 00.79 +22 32 34.8 16.5 888
1989-02-26 12:20:00 A 07 13 04.22 +22 32 29.0 888
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)