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
1992-08-28 19:00:00 19 07 00.39 -22 50 22.8 095
1992-08-28 19:20:00 19 06 58.90 -22 50 26.1 095
1992-08-29 04:35:44 A 19 06 21.54 -22 51 44.9 15.0 675
1992-08-29 05:09:29 A 19 06 19.02 -22 51 47.4 675
1992-08-29 18:37:29 19 05 25.80 -22 53 41.4 095
1992-08-29 18:57:29 19 05 24.49 -22 53 44.3 095
1992-09-01 03:40:30 A 19 01 49.91 -23 01 08.3 675
1992-09-01 04:12:59 A 19 01 47.79 -23 01 12.8 675
1992-09-23 23:49:18 C 18 44 12.52 -23 44 21.5 z 801
1992-09-24 00:31:51 C 18 44 12.14 -23 44 23.3 z 801
1992-10-01 23:42:45 C 18 45 10.08 -23 51 51.9 z 801
1992-10-02 00:13:50 C 18 45 10.37 -23 51 51.4 z 801
1992-10-17 01:35:01 18 54 05.15 -24 01 33.8 F 711
1992-10-18 01:27:13 18 54 52.58 -24 02 11.2 F 711
1992-12-08 17:23:02 A 12 49 05.96 -20 30 18.0 906
1992-12-08 19:02:17 C 12 45 04.86 -20 09 39.9 z 411
1992-12-08 19:05:30 12 44 57.53 -20 08 45.7 12.0 m 894
1992-12-08 19:07:59 12 44 51.39 -20 08 03.4 m 894
1992-12-08 19:10:24 12 44 45.49 -20 07 29.6 12.0 D 897
1992-12-08 19:12:42 C 12 44 39.37 -20 06 47.9 z 411
1992-12-08 19:13:47 C 12 44 36.69 -20 06 29.4 z 411
1992-12-08 19:30:35 12 43 56.13 -20 01 56.2 D 897
1992-12-08 19:32:59 12 43 49.78 -20 01 14.0 D 897
1992-12-08 19:34:59 12 43 44.96 -20 00 41.0 D 897
1992-12-08 20:27:21 C 12 41 39.33 -19 46 03.0 m 871
1992-12-08 20:29:13 C 12 41 33.92 -19 45 31.9 z 900
1992-12-08 20:29:36 C 12 41 33.72 -19 45 25.2 m 871
1992-12-08 20:30:40 C 12 41 30.43 -19 45 06.0 z 900
1992-12-08 20:31:18 C 12 41 28.86 -19 44 57.7 z 900
1992-12-10 17:15:19 A 11 15 11.55 -07 35 04.3 906
1992-12-10 17:25:59 A 11 14 54.60 -07 32 35.4 906
1992-12-10 17:29:22 A 11 14 49.54 -07 31 47.5 906
1992-12-10 19:36:00 11 11 40.76 -07 02 43.1 323
1992-12-11 15:23:22 C 10 45 40.40 -02 54 05.6 413
1992-12-11 15:25:39 C 10 45 37.58 -02 53 39.2 413
1992-12-11 15:28:08 C 10 45 34.61 -02 53 11.3 413
1992-12-11 15:30:22 C 10 45 31.93 -02 52 46.1 413
1992-12-11 15:34:11 C 10 45 27.30 -02 52 02.9 413
1992-12-11 15:37:45 C 10 45 23.01 -02 51 22.9 413
1992-12-11 18:20:53 C 10 42 08.99 -02 25 55.7 z 900
1992-12-11 18:24:35 C 10 42 04.59 -02 25 15.6 z 900
1992-12-11 19:21:35 C 10 40 55.91 -02 14 56.5 z 411
1992-12-11 19:23:14 C 10 40 53.93 -02 14 38.7 z 411
1992-12-11 19:25:34 C 10 40 51.16 -02 14 13.1 z 411
1992-12-11 19:28:44 C 10 40 47.45 -02 13 38.8 z 411
1992-12-13 18:55:40 09 59 13.30 +04 29 19.6 10.0 D 897
1992-12-13 18:58:00 09 59 11.67 +04 29 34.7 D 897
1992-12-13 18:59:44 09 59 10.29 +04 29 46.6 D 897
1992-12-13 19:20:09 09 58 55.56 +04 31 58.8 D 897
1992-12-16 22:32:30 09 22 03.34 +10 15 56.9 104
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)