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
2009-03-20 05:55:52 C 08 25 47.09 +19 33 31.4 18.1 c 704
2009-03-20 19:15:34 C 08 26 14.73 +19 31 57.1 v 434
2009-03-20 19:18:48 C 08 26 14.80 +19 31 56.8 v 434
2009-03-20 19:21:06 C 08 26 14.86 +19 31 56.7 v 434
2009-03-20 19:23:49 C 08 26 14.97 +19 31 56.3 v 434
2009-03-21 22:01:35 C 08 27 10.37 +19 28 46.3 c A24
2009-03-21 22:03:09 C 08 27 10.49 +19 28 45.9 c A24
2009-03-21 22:18:41 C 08 27 10.96 +19 28 44.1 c A24
2009-03-21 22:35:47 C 08 27 11.53 +19 28 42.2 c A24
2009-03-21 22:51:22 C 08 27 12.04 +19 28 40.7 c A24
2009-03-21 22:52:49 C 08 27 12.06 +19 28 40.9 c A24
2009-03-24 21:25:46 C 08 29 46.18 +19 19 47.9 c A24
2009-03-24 21:27:12 C 08 29 46.23 +19 19 47.6 c A24
2009-03-24 21:42:46 C 08 29 46.80 +19 19 45.4 c A24
2009-03-24 21:59:45 C 08 29 47.41 +19 19 43.1 c A24
2009-03-24 22:15:18 C 08 29 47.99 +19 19 40.4 c A24
2009-03-24 22:16:45 C 08 29 47.98 +19 19 40.9 c A24
2009-03-28 04:27:33 C 08 32 49.17 +19 09 02.0 17.7 c 704
2009-03-28 04:44:56 C 08 32 49.82 +19 08 58.9 18.1 c 704
2009-03-28 05:02:24 C 08 32 50.49 +19 08 56.5 18.0 c 704
2009-03-28 05:20:04 C 08 32 51.16 +19 08 54.6 18.2 c 704
2009-03-28 05:37:22 C 08 32 51.84 +19 08 51.5 18.1 c 704
2009-03-31 03:13:26 C 08 35 41.64 +18 58 38.5 r 703
2009-03-31 03:22:56 C 08 35 42.03 +18 58 37.0 r 703
2009-03-31 03:32:38 C 08 35 42.39 +18 58 35.8 r 703
2009-03-31 03:42:08 C 08 35 42.75 +18 58 34.5 r 703
2009-04-22 04:37:28 C 09 00 19.82 +17 21 30.5 19.2 c 704
2009-04-22 04:52:08 C 09 00 20.58 +17 21 26.6 19.5 c 704
2009-04-22 05:06:49 C 09 00 21.30 +17 21 23.9 19.7 c 704
2009-04-22 05:21:30 C 09 00 22.05 +17 21 20.2 19.6 c 704
2009-04-22 05:36:10 C 09 00 22.76 +17 21 17.5 19.3 c 704
2009-05-12 04:34:26 C 09 25 36.22 +15 28 03.3 r 703
2009-05-12 04:45:04 C 09 25 36.76 +15 28 00.5 r 703
2009-05-12 04:55:41 C 09 25 37.27 +15 27 58.0 r 703
2009-05-12 05:06:20 C 09 25 37.88 +15 27 56.0 r 703
2009-05-15 04:10:44 C 09 29 30.04 +15 09 22.8 r G96
2009-05-15 04:25:27 C 09 29 30.84 +15 09 18.8 r G96
2009-05-15 04:40:11 C 09 29 31.66 +15 09 15.1 r G96
2009-05-15 04:54:57 C 09 29 32.46 +15 09 11.0 r G96
2010-03-12 10:38:43 C 14 11 06.34 -12 37 14.0 o 691
2010-03-12 11:04:12 C 14 11 05.70 -12 37 10.6 o 691
2010-03-12 11:23:53 C 14 11 05.25 -12 37 09.3 o 691
2010-03-16 09:49:19 C 14 08 49.09 -12 24 48.5 o 691
2010-03-16 10:40:22 C 14 08 47.73 -12 24 41.3 o 691
2010-04-07 06:16:09 C 13 52 18.43 -10 53 59.9 o 691
2010-04-07 06:41:35 C 13 52 17.44 -10 53 54.0 o 691
2010-04-07 07:07:00 C 13 52 16.49 -10 53 49.0 o 691
2010-04-08 01:50:55 C 13 51 36.13 -10 50 03.6 c J04
2010-04-08 02:26:09 C 13 51 34.83 -10 49 56.0 c J04
2010-04-11 05:34:51 C 13 48 51.30 -10 34 40.7 o 691
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)