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 19:06:55 C 11 54 40.48 +12 08 08.5 300
2001-02-17 19:14:12 C 11 54 40.90 +12 08 11.9 300
2001-02-17 19:46:49 C 11 54 43.05 +12 08 21.4 300
2001-02-18 11:46:15 C 11 56 00.49 +12 13 43.4 300
2001-02-18 11:57:20 C 11 56 01.31 +12 13 46.7 300
2001-02-18 12:11:53 C 11 56 02.39 +12 13 53.3 300
2001-02-18 12:15:33 C 11 56 02.70 +12 13 53.9 300
2001-02-18 12:19:14 C 11 56 02.92 +12 13 55.8 300
2001-02-18 12:26:34 C 11 56 03.49 +12 13 57.8 300
2001-02-18 12:30:14 C 11 56 03.71 +12 14 00.0 300
2001-02-18 12:37:35 C 11 56 04.26 +12 14 02.1 300
2001-02-18 12:41:13 C 11 56 04.51 +12 14 04.4 300
2001-02-18 12:48:36 C 11 56 05.03 +12 14 06.7 300
2001-02-18 12:52:14 C 11 56 05.27 +12 14 07.4 300
2001-02-18 12:55:54 C 11 56 05.63 +12 14 10.1 300
2001-02-18 13:06:56 C 11 56 06.37 +12 14 13.3 300
2001-02-18 13:10:37 C 11 56 06.63 +12 14 15.2 300
2001-02-18 13:17:55 C 11 56 07.12 +12 14 18.1 300
2001-02-18 13:21:36 C 11 56 07.40 +12 14 18.9 300
2001-02-18 13:25:15 C 11 56 07.66 +12 14 20.7 300
2001-02-18 13:28:56 C 11 56 07.92 +12 14 21.8 300
2001-02-18 13:32:34 C 11 56 08.18 +12 14 22.7 300
2001-02-18 13:36:14 C 11 56 08.42 +12 14 24.7 300
2001-02-18 13:39:56 C 11 56 08.70 +12 14 26.3 300
2001-02-18 13:43:35 C 11 56 08.96 +12 14 27.4 300
2001-02-18 13:47:15 C 11 56 09.17 +12 14 28.3 300
2001-02-18 13:50:55 C 11 56 09.47 +12 14 30.2 300
2001-02-18 14:01:53 C 11 56 10.17 +12 14 34.7 300
2001-02-18 14:05:33 C 11 56 10.46 +12 14 36.3 300
2001-02-18 14:09:11 C 11 56 10.69 +12 14 36.4 300
2001-02-18 14:16:30 C 11 56 11.22 +12 14 39.6 300
2001-02-18 14:20:10 C 11 56 11.46 +12 14 41.3 300
2001-02-18 14:23:49 C 11 56 11.69 +12 14 42.3 300
2001-02-18 14:27:29 C 11 56 11.98 +12 14 43.8 300
2001-02-18 14:31:11 C 11 56 12.22 +12 14 45.0 300
2001-02-18 14:34:50 C 11 56 12.49 +12 14 47.3 300
2001-02-18 14:38:30 C 11 56 12.65 +12 14 48.1 300
2001-02-18 14:42:08 C 11 56 12.93 +12 14 49.1 300
2001-02-18 14:45:48 C 11 56 13.18 +12 14 50.9 300
2001-02-18 14:56:48 C 11 56 13.92 +12 14 54.6 300
2001-02-18 15:00:27 C 11 56 14.16 +12 14 55.7 300
2001-02-18 15:07:45 C 11 56 14.67 +12 14 58.8 300
2001-02-18 15:11:25 C 11 56 14.90 +12 14 59.9 300
2001-02-18 15:15:03 C 11 56 15.16 +12 15 01.8 300
2001-02-18 15:18:43 C 11 56 15.34 +12 15 02.7 300
2001-02-18 15:22:22 C 11 56 15.65 +12 15 04.3 300
2001-02-18 15:26:01 C 11 56 15.86 +12 15 05.6 300
2001-02-18 15:29:39 C 11 56 16.10 +12 15 07.0 300
2001-02-18 15:33:19 C 11 56 16.36 +12 15 08.4 300
2001-02-18 15:36:57 C 11 56 16.60 +12 15 09.7 300
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)