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
1934-02-10 00:28:39 A 08 50 26.58 +18 13 36.1 012
1934-02-14 21:34:55 A 08 45 57.57 +18 32 14.2 012
1976-05-27 15:54:25 19 14 02.81 -21 58 05.4 c 260
1976-05-27 16:34:26 19 14 02.02 -21 58 07.1 c 260
1988-07-12 08:16:29 A 19 56 57.15 -20 28 48.4 16.8 675
1988-07-13 05:56:44 A 19 55 39.15 -20 32 37.9 675
1988-07-16 08:42:59 A 19 50 54.01 -20 46 19.2 675
1988-07-17 08:27:29 A 19 49 18.96 -20 50 47.9 17.0 675
1988-07-17 09:16:14 A 19 49 15.60 -20 50 56.2 675
1989-01-03 05:11:15 A 03 19 04.66 +16 26 27.0 11.5 675
1989-01-03 05:18:15 A 03 19 07.21 +16 26 39.6 675
1989-01-04 19:30:00 A 03 39 07.37 +17 48 54.2 010
1989-01-04 20:30:09 A 03 39 37.07 +17 50 51.3 010
1989-01-04 20:53:00 A 03 39 47.67 +17 51 33.8 010
1989-01-04 21:53:00 A 03 40 17.12 +17 53 28.6 12.0 010
1989-01-06 02:13:59 A 03 53 50.88 +18 44 10.6 801
1989-01-06 05:47:11 A 03 55 26.35 +18 49 49.8 801
1989-01-06 22:03:59 A 04 02 44.62 +19 15 06.8 010
1989-01-06 22:18:59 A 04 02 50.98 +19 15 27.0 010
1989-01-07 02:41:59 A 04 04 47.62 +19 22 02.2 675
1989-01-07 02:51:59 A 04 04 51.31 +19 22 13.5 675
1989-01-07 05:39:29 A 04 06 01.48 +19 26 14.5 675
1989-01-07 05:49:30 A 04 06 05.56 +19 26 27.5 675
1989-01-08 13:36:29 A 04 19 07.12 +20 07 29.0 11.0 372
1989-01-08 13:43:14 A 04 19 09.67 +20 07 38.1 372
1989-01-08 22:50:59 A 04 22 42.07 +20 17 59.9 010
1989-01-08 22:56:04 A 04 22 43.64 +20 18 03.3 010
1989-01-08 23:26:00 A 04 22 54.48 +20 18 37.9 588
1989-01-09 15:11:30 A 04 28 48.29 +20 35 27.8 12.0 372
1989-01-09 20:11:30 A 04 30 40.01 +20 40 17.4 D 978
1989-01-09 21:08:56 A 04 30 59.98 +20 41 11.2 D 978
1989-01-09 22:09:59 A 04 31 20.77 +20 42 17.5 552
1989-01-09 22:19:00 A 04 31 24.59 +20 42 19.8 D 978
1989-01-09 23:08:00 A 04 31 41.45 +20 43 15.5 588
1989-01-10 18:40:59 A 04 38 33.03 +21 01 02.4 D 978
1989-01-10 20:02:18 A 04 38 59.85 +21 02 12.9 494
1989-01-10 20:26:39 A 04 39 07.82 +21 02 33.8 494
1989-01-10 20:29:30 A 04 39 09.12 +21 02 33.4 D 978
1989-01-10 23:08:59 A 04 40 01.48 +21 04 52.0 D 978
1989-01-10 23:16:34 A 04 40 06.13 +21 05 03.3 801
1989-01-11 00:09:06 A 04 40 20.80 +21 05 39.7 D 978
1989-01-11 06:31:00 A 04 42 28.12 +21 10 59.2 657
1989-01-11 21:15:30 A 04 47 13.62 +21 22 18.4 494
1989-01-11 21:27:25 A 04 47 17.30 +21 22 27.7 494
1989-01-12 11:48:44 A 04 51 43.76 +21 33 34.0 12.0 413
1989-01-12 11:55:26 A 04 51 45.76 +21 33 37.2 413
1989-01-12 11:56:30 A 04 51 46.22 +21 32 47.9 406
1989-01-12 12:05:47 A 04 51 49.16 +21 32 59.4 403
1989-01-12 12:21:29 A 04 51 53.67 +21 33 11.9 403
1989-01-12 12:45:00 A 04 52 00.6 +21 33 24 881
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)