25143 Itokawa (1998 SF36)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2801500646 ± 2.00e+00
Semi-major axis (a)1.3241351858 AU ± 3.00e+00
Inclination (i)1.62094679° ± 4.00e+00
Long. of Asc. Node (Ω)69.07559342° ± 5.00e+00
Arg. of Perihelion (ω)162.85358594° ± 6.00e+00
Mean Anomaly (M)41.26159601° ± 1.02e-05
Mean Motion (n)0.6468651991°/day ± 2.20e+00
Perihelion dist (q)0.95317863 AU ± 3.42e+00
Aphelion dist (Q)1.69509174 AU ± 4.67e+00
Orbital Period1.52369657 yr ± 5.18e+00
NGA Modelr2
A2-1.11276574e-06 AU/d²
Physical Parameters
H (abs. magnitude)19.26
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.398″
Uncertainty0
Orbit TypeApollo
MOID0.013223 AU
Observations Used1204
Oppositions9
Arc Total1998-2024
First Observation Used1998-09-19
Last Observation Used2024-12-19
Observations (1260)
Date Type RA Dec Mag Band Observatory
2001-03-04 02:37:06 C 12 28 29.44 +14 59 09.3 15.3 939
2001-03-04 08:15:39 C 12 29 18.10 +15 03 15.1 15.2 c 704
2001-03-04 08:38:02 C 12 29 20.77 +15 03 30.8 15.0 c 704
2001-03-04 08:58:35 C 12 29 23.25 +15 03 45.5 15.0 c 704
2001-03-04 09:18:46 C 12 29 25.65 +15 03 59.2 15.0 c 704
2001-03-04 09:39:58 C 12 29 28.13 +15 04 16.6 16.9 c 704
2001-03-05 08:59:06 C 12 32 50.07 +15 20 59.9 14.9 c 704
2001-03-05 09:17:52 C 12 32 52.48 +15 21 13.4 15.3 c 704
2001-03-05 09:36:35 C 12 32 54.90 +15 21 27.0 15.4 c 704
2001-03-05 09:55:27 C 12 32 57.33 +15 21 40.7 15.4 c 704
2001-03-05 10:14:43 C 12 32 59.85 +15 21 54.1 15.1 c 704
2001-03-06 02:47:23 C 12 35 31.26 +15 33 54.8 621
2001-03-06 02:47:53 C 12 35 31.32 +15 33 55.2 621
2001-03-06 02:48:22 C 12 35 31.40 +15 33 55.5 621
2001-03-06 02:53:45 C 12 35 32.15 +15 33 59.6 621
2001-03-06 02:54:15 C 12 35 32.23 +15 33 59.9 621
2001-03-06 02:54:43 C 12 35 32.30 +15 34 00.2 621
2001-03-06 04:50:50 C 12 35 55.55 +15 35 45.7 649
2001-03-06 05:06:25 C 12 35 57.55 +15 35 53.3 649
2001-03-06 05:24:35 C 12 35 59.73 +15 36 10.4 649
2001-03-06 20:18:22 C 12 38 24.35 +15 47 20.0 113
2001-03-06 20:29:30 C 12 38 26.03 +15 47 30.1 113
2001-03-06 20:35:00 C 12 38 26.84 +15 47 34.8 113
2001-03-06 20:37:11 C 12 38 27.20 +15 47 36.2 113
2001-03-06 20:41:35 C 12 38 27.85 +15 47 40.7 113
2001-03-06 20:43:47 C 12 38 28.23 +15 47 41.3 113
2001-03-10 04:13:09 C 12 53 16.79 +16 55 43.1 739
2001-03-10 04:24:02 C 12 53 18.90 +16 55 52.0 739
2001-03-10 04:28:27 C 12 53 19.74 +16 55 58.0 739
2001-03-10 04:33:34 C 12 53 20.72 +16 56 03.3 739
2001-03-14 02:58:32 C 13 17 03.42 +18 31 12.6 739
2001-03-14 03:01:41 C 13 17 04.31 +18 31 16.5 739
2001-03-14 03:04:58 C 13 17 05.27 +18 31 20.5 739
2001-03-14 22:10:47 C 13 22 57.15 +18 52 42.4 610
2001-03-14 22:15:47 C 13 22 58.65 +18 52 48.5 610
2001-03-14 22:20:47 C 13 23 00.16 +18 52 54.5 610
2001-03-14 22:25:46 C 13 23 01.67 +18 53 00.6 610
2001-03-14 22:30:46 C 13 23 03.17 +18 53 06.6 610
2001-03-15 07:23:10 C 13 25 56.40 +19 03 38.6 14.6 c 704
2001-03-15 07:41:27 C 13 26 01.93 +19 04 00.2 15.0 c 704
2001-03-15 07:59:43 C 13 26 07.49 +19 04 21.9 15.1 c 704
2001-03-15 08:17:57 C 13 26 13.00 +19 04 43.6 15.3 c 704
2001-03-15 08:36:14 C 13 26 18.53 +19 05 04.7 15.1 c 704
2001-03-15 16:27:02 C 13 28 58.06 +19 14 04.9 349
2001-03-15 16:28:47 C 13 28 58.60 +19 14 06.8 349
2001-03-15 16:31:36 C 13 28 59.48 +19 14 10.4 349
2001-03-15 16:32:51 C 13 28 59.88 +19 14 11.8 349
2001-03-15 16:34:37 C 13 29 00.46 +19 14 13.8 349
2001-03-15 16:35:53 C 13 29 00.85 +19 14 15.6 349
2001-03-16 22:30:38 C 13 40 05.12 +19 49 03.3 046
Radar Observations (39)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2001-03-18 06:07:00 59949663.968 0.5 us 2380 -1 -1
2001-03-18 06:58:00 87291.569 0.06 Hz 2380 -1 -1
2001-03-26 07:35:00 40505963.413 0.1 us 2380 -1 -1
2001-03-26 08:36:00 35971.48 0.06 Hz 2380 -1 -1
2001-03-27 07:45:00 39342652.33 0.1 us 2380 -1 -1
2001-03-27 08:58:00 25717.34 0.06 Hz 2380 -1 -1
2001-03-28 08:01:00 38557860.88 0.1 us 2380 -1 -1
2001-03-28 09:20:00 14841.96 0.06 Hz 2380 -1 -1
2001-03-29 08:29:00 38174750.69 0.1 us 2380 -1 -1
2001-03-29 09:41:00 3636.498 0.06 Hz 2380 -1 -1
2001-03-30 08:44:00 38208807.39 0.1 us 2380 -1 -1
2001-03-30 09:00:00 38228635.68 0.25 us 8560 -14 -14
2001-03-30 09:56:00 -7406.385 0.06 Hz 2380 -1 -1
2001-03-30 12:50:00 -28726.76 0.5 Hz 8560 -14 -14
2001-03-31 09:20:00 38658759.07 0.1 us 2380 -1 -1
2001-03-31 10:27:00 -18741.98 0.06 Hz 2380 -1 -1
2001-04-01 09:34:00 39496457.26 0.1 us 2380 -1 -1
2001-04-01 10:52:00 -29298.16 0.06 Hz 2380 -1 -1
2001-04-02 09:37:00 40689129.31 0.1 us 2380 -1 -1
2001-04-02 10:54:00 -38271.8 0.06 Hz 2380 -1 -1
2001-04-04 10:11:00 44060192.64 0.1 us 2380 -1 -1
2001-04-04 11:19:00 -54244.53 0.06 Hz 2380 -1 -1
2001-04-07 10:46:00 50979486.92 0.1 us 2380 -1 -1
2001-04-07 11:48:00 -71393.26 0.06 Hz 2380 -1 -1
2001-04-09 11:14:00 56496794.09 0.1 us 2380 -1 -1
2001-04-09 12:00:00 -79160.53 0.06 Hz 2380 -1 -1
2004-06-17 18:40:00 34399954 10 us 8560 -14 -14
2004-06-17 20:20:00 34161533.221 0.5 us 8560 -14 -14
2004-06-17 22:00:00 33929094.13 0.625 us 8560 -14 -14
2004-06-17 22:00:00 326812.97 0.5 Hz 8560 -14 -14
2004-06-19 19:04:00 27884013.861 0.625 us 2380 -1 -1
2004-06-19 19:04:00 85755.239 0.12 Hz 2380 -1 -1
2004-06-19 19:18:00 27853827.71 0.5 us 2380 -1 -1
2004-06-20 01:50:00 27024948.094 0.312 us 8560 -14 -14
2004-06-20 01:50:00 289515.83 0.5 Hz 8560 -14 -14
2004-06-21 18:00:00 22011533.34 0.312 us 8560 -14 -14
2004-06-21 18:00:00 301233.4 0.5 Hz 8560 -14 -14
2004-06-21 21:30:00 21581518.864 0.312 us 8560 -14 -14
2004-06-21 21:30:00 281528.06 0.5 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)