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
1993-03-20 00:54:06 C 08 17 55.38 +19 59 00.5 z 801
1993-03-20 01:14:19 C 08 17 56.21 +19 58 57.4 z 801
1993-03-22 05:09:46 C 08 20 12.04 +19 51 44.0 z 670
1993-03-22 05:31:32 C 08 20 12.86 +19 51 37.7 z 670
1993-03-22 05:56:54 C 08 20 13.92 +19 51 36.3 z 670
1993-03-23 02:13:48 C 08 21 07.97 +19 48 38.6 z 801
1993-03-23 02:29:19 C 08 21 08.65 +19 48 36.4 z 801
1993-03-26 02:44:45 08 24 25.58 +19 37 45.0 711
1993-03-27 03:27:47 08 25 34.22 +19 33 52.8 711
1993-03-28 02:57:41 08 26 40.30 +19 30 07.7 711
1993-03-29 03:42:50 08 27 50.39 +19 26 07.1 711
1993-04-16 03:17:42 08 49 40.67 +18 04 58.9 711
1993-04-18 04:44:03 08 52 18.69 +17 54 25.2 711
1995-05-06 09:03:29 C 15 49 40.16 -19 27 30.6 711
1995-05-06 09:42:29 C 15 49 38.46 -19 27 28.1 711
1995-05-09 06:47:30 C 15 47 03.84 -19 19 17.2 711
1995-05-09 07:07:30 C 15 47 02.81 -19 19 12.6 711
1996-05-21 10:51:29 C 20 43 31.76 -17 51 55.1 i 711
1996-05-21 11:01:05 C 20 43 32.06 -17 51 53.9 i 711
1996-05-28 10:34:24 C 20 48 55.59 -17 30 59.6 i 711
1996-05-28 10:44:17 C 20 48 55.83 -17 30 58.1 i 711
1996-06-19 08:53:51 C 20 59 11.41 -16 50 38.7 z 704
1996-06-20 08:01:03 C 20 59 21.20 -16 50 04.9 z 704
1996-06-23 09:47:52 C 20 59 39.51 -16 49 12.0 z 704
1996-07-08 12:06:08 C 20 56 14.55 -17 06 29.7 c 608
1996-07-08 12:55:35 C 20 56 13.32 -17 06 34.9 c 608
1996-07-09 11:08:20 C 20 55 42.87 -17 08 57.7 c 608
1996-07-09 11:54:56 C 20 55 41.61 -17 09 03.0 c 608
1996-07-19 22:41:13 C 20 47 07.25 -17 47 21.5 z 046
1996-07-19 22:44:48 C 20 47 07.08 -17 47 22.0 z 046
1996-07-19 22:50:44 C 20 47 06.79 -17 47 23.3 z 046
1996-07-20 07:00:20 C 20 46 44.89 -17 48 56.7 z 684
1996-07-20 07:10:24 C 20 46 44.38 -17 48 58.7 z 684
1996-07-20 07:18:15 C 20 46 44.00 -17 49 00.3 z 684
1996-07-20 10:08:33 C 20 46 35.61 -17 49 32.8 i 711
1996-07-20 10:12:42 C 20 46 35.40 -17 49 33.7 i 711
1996-07-21 05:38:17 C 20 45 41.81 -17 53 28.9 z 816
1996-07-21 05:44:17 C 20 45 41.50 -17 53 30.2 z 816
1996-07-21 05:49:50 C 20 45 41.23 -17 53 31.2 z 816
1996-07-21 06:00:25 C 20 45 40.68 -17 53 33.3 z 816
1996-07-21 06:07:10 C 20 45 40.34 -17 53 34.7 z 816
1996-07-21 06:12:18 C 20 45 40.10 -17 53 35.9 z 816
1996-07-22 08:19:38 C 20 44 24.27 -17 58 58.1 i 711
1996-07-22 11:12:00 C 20 44 15.93 -17 59 33.1 c 566
1996-07-22 11:24:59 C 20 44 15.24 -17 59 36.0 c 566
1996-07-22 21:11:45 C 20 43 46.21 -18 01 44.1 z 540
1996-07-22 21:22:03 C 20 43 45.65 -18 01 46.4 z 540
1996-07-22 21:44:27 C 20 43 44.48 -18 01 51.1 z 540
1996-07-26 21:32:57 C 20 38 31.24 -18 23 42.5 z 046
1996-07-26 21:36:30 C 20 38 31.03 -18 23 43.5 z 046
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)