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
2001-01-02 09:30:41 C 09 54 34.03 +12 10 28.4 16.1 c 704
2001-01-02 09:52:30 C 09 54 32.00 +12 10 40.1 14.8 c 704
2001-01-03 09:08:29 C 09 52 32.65 +12 22 56.0 14.5 c 704
2001-01-03 09:30:19 C 09 52 30.62 +12 23 07.3 c 704
2001-01-03 09:52:09 C 09 52 28.58 +12 23 18.8 c 704
2001-01-03 10:13:57 C 09 52 26.55 +12 23 30.2 c 704
2001-01-03 10:35:55 C 09 52 24.51 +12 23 41.9 c 704
2001-01-04 11:43:52 C 09 50 15.03 +12 37 00.7 15.1 c 608
2001-01-04 11:58:12 C 09 50 13.69 +12 37 08.3 15.1 c 608
2001-01-04 12:12:22 C 09 50 12.34 +12 37 15.9 15.1 c 608
2001-01-04 14:52:04 C 09 49 58.98 +12 38 32.1 355
2001-01-04 14:56:25 C 09 49 58.57 +12 38 34.4 355
2001-01-04 15:02:00 C 09 49 58.06 +12 38 37.4 355
2001-01-04 15:05:17 C 09 49 57.77 +12 38 39.2 355
2001-01-08 18:58:34 C 09 41 10.46 +13 30 32.7 300
2001-01-08 19:04:46 C 09 41 09.89 +13 30 35.8 300
2001-01-08 19:10:55 C 09 41 09.29 +13 30 39.0 300
2001-01-08 19:17:03 C 09 41 08.72 +13 30 41.8 300
2001-01-08 19:23:14 C 09 41 08.13 +13 30 45.0 300
2001-01-13 23:27:55 C 09 30 13.41 +14 32 22.1 113
2001-01-13 23:29:55 C 09 30 13.20 +14 32 23.0 113
2001-01-13 23:31:56 C 09 30 13.00 +14 32 23.7 113
2001-01-13 23:33:56 C 09 30 12.82 +14 32 24.8 113
2001-01-13 23:38:28 C 09 30 12.39 +14 32 26.8 113
2001-01-16 23:09:59 C 09 24 00.85 +15 05 54.4 o 084
2001-01-19 06:45:32 C 09 19 19.78 +15 30 47.2 c 699
2001-01-19 07:17:08 C 09 19 17.15 +15 30 59.4 c 699
2001-01-19 07:48:48 C 09 19 14.40 +15 31 13.1 c 699
2001-01-19 08:20:30 C 09 19 11.56 +15 31 27.3 c 699
2001-01-20 04:03:10 C 09 17 33.93 +15 40 18.0 844
2001-01-20 04:04:46 C 09 17 33.79 +15 40 18.8 844
2001-01-20 04:10:46 C 09 17 33.27 +15 40 21.4 844
2001-01-20 07:28:41 C 09 17 17.04 +15 41 21.4 13.9 c 704
2001-01-20 07:50:08 C 09 17 15.16 +15 41 30.7 15.3 c 704
2001-01-20 08:11:38 C 09 17 13.28 +15 41 40.0 c 704
2001-01-20 08:33:07 C 09 17 11.42 +15 41 48.9 c 704
2001-01-20 08:54:43 C 09 17 09.54 +15 41 58.1 c 704
2001-01-21 01:58:22 C 09 15 45.77 +15 48 57.3 o 084
2001-01-21 02:27:03 C 09 15 43.40 +15 49 08.9 o 084
2001-01-21 07:40:09 C 09 15 18.82 +15 51 27.5 14.6 c 704
2001-01-21 08:02:04 C 09 15 16.93 +15 51 36.7 c 704
2001-01-21 08:23:55 C 09 15 15.05 +15 51 45.7 c 704
2001-01-21 08:46:01 C 09 15 13.13 +15 51 55.1 c 704
2001-01-21 09:02:33 C 09 15 11.75 +15 52 01.6 14.2 c 704
2001-01-21 09:08:15 C 09 15 11.24 +15 52 04.0 c 704
2001-01-21 09:24:13 C 09 15 09.87 +15 52 10.4 c 704
2001-01-21 09:45:51 C 09 15 08.02 +15 52 19.0 c 704
2001-01-21 10:07:28 C 09 15 06.16 +15 52 27.7 c 704
2001-01-21 10:29:05 C 09 15 04.32 +15 52 36.6 15.0 c 704
2001-01-22 01:34:59 C 09 13 51.93 +15 58 37.7 o 084
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)