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
2001-02-17 06:27:51 C 11 53 46.02 +12 03 56.3 739
2001-02-17 06:31:23 C 11 53 46.24 +12 03 57.4 739
2001-02-17 12:47:40 C 11 54 15.69 +12 05 59.1 300
2001-02-17 13:27:33 C 11 54 18.46 +12 06 14.2 300
2001-02-17 14:18:12 C 11 54 21.89 +12 06 32.0 300
2001-02-17 14:25:28 C 11 54 22.30 +12 06 33.7 300
2001-02-17 14:32:42 C 11 54 22.84 +12 06 37.5 300
2001-02-17 14:43:31 C 11 54 23.55 +12 06 40.8 300
2001-02-17 14:50:47 C 11 54 23.98 +12 06 43.0 300
2001-02-17 14:54:25 C 11 54 24.21 +12 06 45.1 300
2001-02-17 14:58:03 C 11 54 24.48 +12 06 45.8 300
2001-02-17 15:01:40 C 11 54 24.72 +12 06 47.5 300
2001-02-17 15:08:53 C 11 54 25.26 +12 06 49.6 300
2001-02-17 15:12:30 C 11 54 25.45 +12 06 51.0 300
2001-02-17 15:16:06 C 11 54 25.63 +12 06 52.6 300
2001-02-17 15:19:42 C 11 54 25.93 +12 06 53.5 300
2001-02-17 15:23:19 C 11 54 26.15 +12 06 54.6 300
2001-02-17 15:26:55 C 11 54 26.34 +12 06 55.7 300
2001-02-17 15:30:33 C 11 54 26.59 +12 06 57.2 300
2001-02-17 15:34:11 C 11 54 26.82 +12 06 58.3 300
2001-02-17 15:37:48 C 11 54 27.04 +12 07 00.0 300
2001-02-17 15:41:24 C 11 54 27.32 +12 07 00.5 300
2001-02-17 15:48:38 C 11 54 27.77 +12 07 03.2 300
2001-02-17 15:59:30 C 11 54 28.43 +12 07 07.1 300
2001-02-17 16:03:07 C 11 54 28.67 +12 07 08.2 300
2001-02-17 16:06:43 C 11 54 28.92 +12 07 09.7 300
2001-02-17 16:10:20 C 11 54 29.18 +12 07 11.1 300
2001-02-17 16:13:58 C 11 54 29.36 +12 07 12.1 300
2001-02-17 16:17:34 C 11 54 29.59 +12 07 12.8 300
2001-02-17 16:21:12 C 11 54 29.88 +12 07 15.1 300
2001-02-17 16:24:48 C 11 54 30.06 +12 07 15.8 300
2001-02-17 16:28:25 C 11 54 30.30 +12 07 17.1 300
2001-02-17 16:32:02 C 11 54 30.53 +12 07 18.3 300
2001-02-17 16:35:40 C 11 54 30.73 +12 07 19.7 300
2001-02-17 16:39:16 C 11 54 30.95 +12 07 20.5 300
2001-02-17 16:42:53 C 11 54 31.23 +12 07 21.7 300
2001-02-17 16:46:31 C 11 54 31.50 +12 07 22.9 300
2001-02-17 16:57:24 C 11 54 32.18 +12 07 26.4 300
2001-02-17 17:00:59 C 11 54 32.35 +12 07 27.8 300
2001-02-17 17:04:37 C 11 54 32.62 +12 07 28.9 300
2001-02-17 17:08:14 C 11 54 32.86 +12 07 30.2 300
2001-02-17 17:11:50 C 11 54 33.08 +12 07 31.5 300
2001-02-17 17:15:29 C 11 54 33.25 +12 07 32.9 300
2001-02-17 17:19:07 C 11 54 33.58 +12 07 33.6 300
2001-02-17 17:33:35 C 11 54 34.44 +12 07 38.8 300
2001-02-17 18:12:33 C 11 54 36.95 +12 07 51.1 300
2001-02-17 18:16:11 C 11 54 37.21 +12 07 52.7 300
2001-02-17 18:23:24 C 11 54 37.67 +12 07 55.1 300
2001-02-17 18:34:18 C 11 54 38.35 +12 07 58.1 300
2001-02-17 18:37:55 C 11 54 38.55 +12 07 59.7 300
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)