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
1989-03-03 02:35:44 A 07 21 06.55 +22 19 16.9 801
1989-03-08 11:39:59 A 07 30 15.37 +22 02 07.1 17.0 888
1989-03-08 12:27:59 A 07 30 18.59 +22 01 59.5 888
1989-03-10 00:50:03 A 07 32 51.31 +21 56 48.9 801
1991-04-16 08:42:05 16 00 49.28 -20 02 38.2 G 711
1992-05-12 10:15:29 20 25 15.94 -18 58 08.0 688
1992-05-12 10:21:30 20 25 16.12 -18 58 07.3 688
1992-06-02 10:08:26 c 20 39 11.35 -18 08 19.6 i 691
1992-06-02 10:30:13 c 20 39 11.71 -18 08 18.8 i 691
1992-06-02 10:51:56 c 20 39 12.07 -18 08 17.1 i 691
1992-06-09 10:27:38 20 41 38.49 -17 59 23.2 G 711
1992-06-11 08:17:46 20 42 04.78 -17 57 50.4 G 711
1992-06-29 06:37:30 C 20 40 13.48 -18 06 55.9 z 801
1992-06-29 07:32:42 C 20 40 12.39 -18 07 00.8 z 801
1992-07-03 16:44:11 C 20 37 49.48 -18 16 35.3 413
1992-07-03 16:47:17 C 20 37 49.38 -18 16 35.6 413
1992-07-04 15:00:21 C 20 37 12.94 -18 19 04.5 413
1992-07-04 15:02:49 C 20 37 12.86 -18 19 04.8 413
1992-07-08 06:24:41 20 34 25.97 -18 30 21.0 G 711
1992-07-09 07:13:23 20 33 31.65 -18 33 54.1 G 711
1992-07-21 03:16:30 A 20 19 33.70 -19 26 08.3 z 809
1992-07-21 03:29:30 A 20 19 32.92 -19 26 11.3 z 809
1992-07-21 03:42:29 A 20 19 32.13 -19 26 14.1 z 809
1992-07-22 01:21:30 A 20 18 12.12 -19 31 01.0 z 809
1992-07-22 01:34:30 A 20 18 11.29 -19 31 03.8 z 809
1992-07-22 01:47:29 A 20 18 10.49 -19 31 06.6 z 809
1992-07-22 07:43:00 A 20 17 46.86 -19 32 26.6 z 809
1992-07-22 08:08:59 A 20 17 45.26 -19 32 32.3 z 809
1992-07-22 08:34:59 A 20 17 43.67 -19 32 38.1 z 809
1992-07-26 04:41:37 C 20 11 35.21 -19 54 18.1 z 801
1992-07-26 04:54:51 C 20 11 34.26 -19 54 21.4 z 801
1992-07-26 08:05:00 A 20 11 20.93 -19 55 07.0 15.0 675
1992-07-26 09:09:44 A 20 11 16.09 -19 55 22.7 675
1992-07-26 23:25:28 20 10 15.37 -19 58 51.5 010
1992-07-26 23:51:29 20 10 13.64 -19 58 57.3 010
1992-07-27 00:06:28 20 10 12.50 -19 58 59.2 010
1992-07-28 02:05:30 A 20 08 20.28 -20 05 04.2 z 809
1992-07-28 02:20:30 A 20 08 19.25 -20 05 07.6 z 809
1992-07-28 02:35:30 A 20 08 18.20 -20 05 11.2 z 809
1992-07-28 04:57:20 C 20 08 07.04 -20 06 01.5 z 801
1992-07-28 05:12:57 C 20 08 05.83 -20 06 05.4 z 801
1992-07-29 06:10:11 20 06 14.80 -20 12 12.8 G 711
1992-07-30 05:36:28 20 04 28.30 -20 18 02.2 G 711
1992-07-31 05:12:45 20 02 39.01 -20 23 56.5 G 711
1992-08-21 12:35:00 19 19 58.30 -22 21 22.5 323
1992-08-26 19:45:00 19 10 17.90 -22 43 19.8 095
1992-08-26 19:45:03 19 10 17.92 -22 43 20.5 095
1992-08-27 19:14:50 19 08 38.37 -22 46 53.2 095
1992-08-27 19:34:50 19 08 36.83 -22 46 57.2 095
1992-08-28 12:44:00 19 07 26.13 -22 49 08.7 323
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)