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
2001-02-18 15:40:37 C 11 56 16.84 +12 15 10.6 300
2001-02-18 15:44:15 C 11 56 17.12 +12 15 12.2 300
2001-02-18 15:47:52 C 11 56 17.31 +12 15 13.6 300
2001-02-18 15:55:15 C 11 56 17.82 +12 15 16.0 300
2001-02-18 16:18:55 C 11 56 19.37 +12 15 24.4 300
2001-02-18 16:22:35 C 11 56 19.55 +12 15 26.2 300
2001-02-18 16:26:16 C 11 56 19.84 +12 15 27.3 300
2001-02-18 16:29:57 C 11 56 20.08 +12 15 28.4 300
2001-02-18 16:33:36 C 11 56 20.34 +12 15 30.2 300
2001-02-18 16:37:18 C 11 56 20.55 +12 15 31.2 300
2001-02-18 16:40:58 C 11 56 20.80 +12 15 32.4 300
2001-02-18 16:44:38 C 11 56 21.04 +12 15 33.8 300
2001-02-18 16:48:19 C 11 56 21.29 +12 15 34.9 300
2001-02-18 16:55:43 C 11 56 21.74 +12 15 37.8 300
2001-02-18 16:59:19 C 11 56 21.99 +12 15 39.2 300
2001-02-18 17:02:56 C 11 56 22.21 +12 15 40.7 300
2001-02-18 17:06:33 C 11 56 22.47 +12 15 41.4 300
2001-02-18 17:10:09 C 11 56 22.71 +12 15 42.9 300
2001-02-18 17:13:48 C 11 56 22.94 +12 15 44.1 300
2001-02-18 17:17:26 C 11 56 23.19 +12 15 45.3 300
2001-02-18 17:21:02 C 11 56 23.44 +12 15 46.5 300
2001-02-18 17:24:38 C 11 56 23.68 +12 15 47.3 300
2001-02-18 17:42:36 C 11 56 24.83 +12 15 54.3 300
2001-02-18 17:46:13 C 11 56 25.05 +12 15 55.4 300
2001-02-18 17:57:06 C 11 56 25.75 +12 15 59.2 300
2001-02-18 18:00:43 C 11 56 26.04 +12 15 59.9 300
2001-02-18 18:04:19 C 11 56 26.24 +12 16 01.1 300
2001-02-18 18:07:55 C 11 56 26.47 +12 16 02.7 300
2001-02-18 18:11:32 C 11 56 26.73 +12 16 04.1 300
2001-02-18 18:15:08 C 11 56 26.98 +12 16 05.5 300
2001-02-18 18:18:44 C 11 56 27.17 +12 16 06.4 300
2001-02-18 18:22:20 C 11 56 27.43 +12 16 07.5 300
2001-02-18 18:26:00 C 11 56 27.69 +12 16 09.2 300
2001-02-18 18:29:37 C 11 56 27.91 +12 16 10.6 300
2001-02-18 18:33:14 C 11 56 28.13 +12 16 11.4 300
2001-02-18 18:36:50 C 11 56 28.39 +12 16 12.8 300
2001-02-18 18:40:26 C 11 56 28.66 +12 16 13.9 300
2001-02-18 19:21:16 C 11 56 31.37 +12 16 27.7 300
2001-02-18 19:24:54 C 11 56 31.62 +12 16 29.0 300
2001-02-18 19:28:31 C 11 56 31.88 +12 16 30.3 300
2001-02-18 19:32:08 C 11 56 32.07 +12 16 32.0 300
2001-02-18 19:35:45 C 11 56 32.36 +12 16 32.0 300
2001-02-18 19:39:23 C 11 56 32.62 +12 16 34.0 300
2001-02-18 19:48:06 C 11 56 33.17 +12 16 36.7 300
2001-02-18 19:51:42 C 11 56 33.43 +12 16 37.5 300
2001-02-18 19:58:56 C 11 56 33.93 +12 16 40.1 300
2001-02-18 20:02:35 C 11 56 34.23 +12 16 40.6 300
2001-02-18 20:06:12 C 11 56 34.42 +12 16 42.6 300
2001-02-18 20:09:49 C 11 56 34.63 +12 16 43.4 300
2001-02-18 20:13:26 C 11 56 34.95 +12 16 44.4 300
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)