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
2009-01-28 04:42:16 C 08 25 28.70 +19 18 45.9 r 703
2009-01-28 15:47:59 C 08 24 56.73 +19 20 55.6 r 379
2009-01-28 16:02:19 C 08 24 56.00 +19 20 58.4 r 379
2009-01-28 16:05:58 C 08 24 55.83 +19 20 59.0 r 379
2009-01-29 00:22:16 C 08 24 32.84 +19 22 29.3 14.6 r C20
2009-01-29 00:23:03 C 08 24 32.79 +19 22 29.5 14.6 r C20
2009-01-29 22:21:58 C 08 23 35.57 +19 26 31.1 o 510
2009-01-29 22:28:51 C 08 23 35.25 +19 26 32.5 o 510
2009-01-29 22:32:16 C 08 23 35.10 +19 26 33.1 o 510
2009-01-30 00:01:22 C 08 23 31.38 +19 26 55.5 r J51
2009-01-30 00:10:45 C 08 23 30.92 +19 26 57.2 r J51
2009-01-30 00:20:09 C 08 23 30.48 +19 26 58.9 r J51
2009-01-30 19:56:28 C 08 22 41.11 +19 30 18.9 14.9 r C20
2009-01-30 19:57:16 C 08 22 41.06 +19 30 19.2 14.9 r C20
2009-01-31 17:28:20 C 08 21 48.28 +19 33 54.9 r 379
2009-01-31 17:32:00 C 08 21 48.14 +19 33 55.3 r 379
2009-01-31 17:37:20 C 08 21 47.92 +19 33 55.8 r 379
2009-01-31 17:39:09 C 08 21 47.84 +19 33 56.0 r 379
2009-01-31 17:41:00 C 08 21 47.75 +19 33 56.1 r 379
2009-01-31 17:48:08 C 08 21 47.47 +19 33 57.6 r 379
2009-01-31 19:22:56 C 08 21 44.91 +19 34 06.9 14.7 r 084
2009-01-31 19:26:32 C 08 21 44.76 +19 34 07.7 14.7 r 084
2009-01-31 20:54:55 C 08 21 40.93 +19 34 26.6 14.9 r C20
2009-01-31 20:55:42 C 08 21 40.89 +19 34 26.8 14.8 r C20
2009-02-03 19:09:08 C 08 19 11.44 +19 44 38.0 14.8 r 084
2009-02-03 23:25:47 C 08 19 02.53 +19 45 12.0 14.8 r 084
2009-02-04 01:01:30 C 08 18 59.34 +19 45 27.7 r B67
2009-02-04 01:10:35 C 08 18 59.07 +19 45 28.5 r B67
2009-02-04 01:19:55 C 08 18 58.74 +19 45 29.6 r B67
2009-02-04 03:20:51 C 08 18 54.78 +19 45 40.4 14.9 r 084
2009-02-04 23:39:40 C 08 18 17.63 +19 48 15.3 15.2 r 084
2009-02-05 05:19:45 C 08 18 08.35 +19 49 04.3 r 703
2009-02-05 05:31:42 C 08 18 07.95 +19 49 05.9 r 703
2009-02-05 05:43:35 C 08 18 07.56 +19 49 07.3 r 703
2009-02-07 06:12:15 C 08 16 48.37 +19 54 27.3 r I13
2009-02-07 06:17:44 C 08 16 48.07 +19 54 29.4 r I13
2009-02-09 19:42:22 C 08 15 27.48 +20 00 10.2 r J46
2009-02-09 19:48:38 C 08 15 27.34 +20 00 11.3 r J46
2009-02-09 19:55:24 C 08 15 27.21 +20 00 12.2 r J46
2009-02-10 19:42:50 C 08 15 00.67 +20 02 03.4 r J46
2009-02-10 19:55:09 C 08 15 00.42 +20 02 04.6 r J46
2009-02-10 20:04:55 C 08 15 00.22 +20 02 05.5 r J46
2009-02-10 23:18:06 C 08 14 55.96 +20 02 18.1 r B19
2009-02-10 23:19:47 C 08 14 55.93 +20 02 18.7 r B19
2009-02-10 23:23:00 C 08 14 55.83 +20 02 18.7 r B19
2009-02-11 19:40:15 C 08 14 36.77 +20 03 45.9 r J46
2009-02-11 19:46:00 C 08 14 36.66 +20 03 46.3 r J46
2009-02-11 19:52:16 C 08 14 36.55 +20 03 46.7 r J46
2009-02-11 23:41:11 C 08 14 31.98 +20 04 00.1 o B75
2009-02-11 23:43:50 C 08 14 31.93 +20 04 00.2 o B75
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)