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
2025-01-19 02:07:11 C 23 50 06.558 -01 30 25.52 V 703
2025-01-19 05:02:10 C 23 50 40.308 -01 26 43.98 V T08
2025-01-19 05:06:48 C 23 50 41.174 -01 26 37.82 V T08
2025-01-19 05:18:01 C 23 50 43.320 -01 26 23.89 V T08
2025-01-19 05:37:18 C 23 50 47.023 -01 25 59.66 V T08
2025-01-21 01:50:58 C 23 59 21.930 -00 30 02.70 V 703
2025-01-21 01:54:17 C 23 59 22.553 -00 29 58.81 V 703
2025-01-21 01:57:36 C 23 59 23.208 -00 29 54.82 V 703
2025-01-21 05:03:56 C 23 59 59.496 -00 25 55.38 V T05
2025-01-21 05:08:31 C 00 00 00.403 -00 25 49.94 V T05
2025-01-21 05:20:22 C 00 00 02.681 -00 25 34.75 V T05
2025-01-21 05:36:46 C 00 00 05.863 -00 25 13.58 V T05
2025-01-23 02:23:53 C 00 08 52.670 +00 32 05.32 V 703
2025-01-23 02:27:13 C 00 08 53.322 +00 32 09.17 V 703
2025-01-23 02:30:33 C 00 08 54.031 +00 32 13.96 V 703
2025-01-23 02:33:53 C 00 08 54.697 +00 32 18.28 V 703
2025-01-28 01:45:09 C 00 32 40.841 +03 06 52.24 V 703
2025-01-28 01:48:30 C 00 32 41.554 +03 06 57.17 V 703
2025-01-28 01:51:51 C 00 32 42.245 +03 07 02.03 V 703
2025-01-28 01:55:11 C 00 32 42.961 +03 07 06.31 V 703
2025-01-29 23:42:16 B 00 41 59.54 +04 06 48.4 Z W45
2025-01-30 00:03:03 B 00 42 03.74 +04 07 15.5 Z W45
2025-01-30 00:23:49 B 00 42 07.94 +04 07 42.5 Z W45
2025-01-31 19:18:48 C 00 50 53.890 +05 03 34.96 Z C23
2025-01-31 20:02:06 C 00 51 02.726 +05 04 30.94 Z C23
2025-01-31 20:45:27 C 00 51 11.462 +05 05 25.04 Z C23
2025-02-01 02:31:00 C 00 52 22.433 +05 12 59.11 V 703
2025-02-01 02:34:20 C 00 52 23.099 +05 13 03.40 V 703
2025-02-01 02:37:40 C 00 52 23.761 +05 13 07.25 V 703
2025-02-01 02:41:00 C 00 52 24.492 +05 13 11.86 V 703
2025-02-01 17:41:09 C 00 55 29.542 +05 32 39.62 Z C23
2025-02-01 18:34:11 C 00 55 40.414 +05 33 47.05 Z C23
2025-02-01 19:10:37 C 00 55 47.837 +05 34 34.90 Z C23
2025-02-03 17:49:56 C 01 05 25.810 +06 34 52.90 Z C23
2025-02-03 18:12:35 C 01 05 30.485 +06 35 21.59 Z C23
2025-02-04 17:23:52 C 01 10 19.094 +07 05 10.03 X M26
2025-02-04 17:29:30 C 01 10 20.263 +07 05 17.48 X M26
2025-02-04 17:35:12 C 01 10 21.434 +07 05 24.11 X M26
2025-02-05 02:27:52 C 01 12 12.074 +07 16 47.17 V 703
2025-02-05 02:31:08 C 01 12 12.740 +07 16 50.99 V 703
2025-02-05 02:34:23 C 01 12 13.428 +07 16 55.24 V 703
2025-02-05 02:37:39 C 01 12 14.080 +07 16 58.94 V 703
2025-02-06 12:45:18 C 01 19 20.917 +08 00 23.03 O18
2025-02-06 13:21:01 C 01 19 28.346 +08 01 08.39 O18
2025-02-07 02:42:50 C 01 22 15.848 +08 18 01.76 V 703
2025-02-07 02:46:05 C 01 22 16.572 +08 18 05.98 V 703
2025-02-07 02:49:20 C 01 22 17.238 +08 18 10.66 V 703
2025-02-07 02:52:36 C 01 22 18.016 +08 18 14.47 V 703
2025-02-08 02:47:05 C 01 27 18.324 +08 48 13.39 V 703
2025-02-08 02:50:22 C 01 27 19.004 +08 48 18.07 V 703
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)