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
2009-01-17 07:55:33 C 08 40 39.41 +18 12 17.6 15.2 c 704
2009-01-17 08:24:35 C 08 40 37.38 +18 12 28.4 r 703
2009-01-17 08:35:06 C 08 40 36.58 +18 12 31.7 r 703
2009-01-17 08:45:38 C 08 40 35.79 +18 12 34.9 r 703
2009-01-17 08:56:04 C 08 40 35.00 +18 12 38.1 r 703
2009-01-18 01:03:57 C 08 39 29.39 +18 17 36.1 r J75
2009-01-18 01:22:49 C 08 39 28.01 +18 17 42.1 r J75
2009-01-18 01:42:18 C 08 39 26.59 +18 17 47.8 r J75
2009-01-19 00:58:04 C 08 37 53.10 +18 24 43.8 13.8 r C20
2009-01-19 00:58:51 C 08 37 53.05 +18 24 44.3 13.8 r C20
2009-01-20 22:04:03 C 08 35 01.57 +18 37 35.1 c 127
2009-01-20 22:10:25 C 08 35 01.16 +18 37 36.8 c 127
2009-01-20 22:16:27 C 08 35 00.76 +18 37 38.5 c 127
2009-01-20 22:22:37 C 08 35 00.35 +18 37 40.3 c 127
2009-01-21 00:53:38 C 08 34 50.29 +18 38 21.4 o 510
2009-01-21 00:56:51 C 08 34 50.08 +18 38 22.3 o 510
2009-01-21 01:00:02 C 08 34 49.87 +18 38 23.1 o 510
2009-01-21 20:29:31 C 08 33 39.51 +18 43 36.6 c 127
2009-01-21 20:34:34 C 08 33 39.18 +18 43 37.9 c 127
2009-01-21 20:39:38 C 08 33 38.85 +18 43 39.5 c 127
2009-01-21 20:44:39 C 08 33 38.54 +18 43 40.8 c 127
2009-01-22 23:49:56 C 08 32 02.22 +18 50 48.9 r J51
2009-01-22 23:57:38 C 08 32 01.73 +18 50 50.9 r J51
2009-01-23 00:05:20 C 08 32 01.24 +18 50 52.9 r J51
2009-01-23 01:47:31 C 08 31 53.83 +18 51 10.7 14.4 r C20
2009-01-23 01:48:18 C 08 31 53.79 +18 51 10.9 14.4 r C20
2009-01-23 15:49:36 C 08 31 06.83 +18 54 46.2 r D29
2009-01-23 16:09:48 C 08 31 05.57 +18 54 51.2 r D29
2009-01-23 16:29:15 C 08 31 04.35 +18 54 55.9 r D29
2009-01-23 16:49:48 C 08 31 03.08 +18 55 00.8 r D29
2009-01-24 01:44:55 C 08 30 32.62 +18 57 05.5 r B75
2009-01-24 01:50:33 C 08 30 32.27 +18 57 06.9 r B75
2009-01-24 01:53:10 C 08 30 31.70 +18 57 05.8 14.1 r C20
2009-01-24 01:58:02 C 08 30 31.83 +18 57 08.4 r B75
2009-01-24 16:59:19 C 08 29 42.15 +19 00 45.7 r 379
2009-01-24 17:01:09 C 08 29 42.04 +19 00 46.0 r 379
2009-01-24 17:03:00 C 08 29 41.94 +19 00 46.3 r 379
2009-01-24 17:08:19 C 08 29 41.64 +19 00 47.9 r 379
2009-01-24 17:10:09 C 08 29 41.53 +19 00 48.2 r 379
2009-01-24 17:12:00 C 08 29 41.41 +19 00 48.4 r 379
2009-01-24 17:17:19 C 08 29 41.10 +19 00 50.1 r 379
2009-01-24 17:19:08 C 08 29 41.00 +19 00 50.3 r 379
2009-01-24 17:20:59 C 08 29 40.89 +19 00 50.7 r 379
2009-01-25 17:22:09 C 08 28 23.97 +19 06 19.3 r 379
2009-01-25 17:29:19 C 08 28 23.54 +19 06 20.7 r 379
2009-01-25 17:31:10 C 08 28 23.45 +19 06 20.9 r 379
2009-01-25 17:32:59 C 08 28 23.32 +19 06 21.6 r 379
2009-01-28 04:14:38 C 08 25 30.10 +19 18 39.7 r 703
2009-01-28 04:23:45 C 08 25 29.60 +19 18 42.0 r 703
2009-01-28 04:33:05 C 08 25 29.13 +19 18 43.9 r 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)