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
2001-02-14 14:44:45 C 11 49 09.10 +11 45 00.1 300
2001-02-14 14:48:20 C 11 49 09.31 +11 45 01.8 300
2001-02-14 14:51:57 C 11 49 09.54 +11 45 02.5 300
2001-02-14 14:55:33 C 11 49 09.75 +11 45 03.6 300
2001-02-14 14:59:10 C 11 49 09.99 +11 45 05.0 300
2001-02-14 15:02:47 C 11 49 10.24 +11 45 05.9 300
2001-02-14 15:06:25 C 11 49 10.45 +11 45 06.6 300
2001-02-14 15:10:02 C 11 49 10.68 +11 45 07.7 300
2001-02-14 15:13:39 C 11 49 10.89 +11 45 08.5 300
2001-02-14 15:20:53 C 11 49 11.29 +11 45 11.1 300
2001-02-14 15:28:09 C 11 49 11.75 +11 45 13.3 300
2001-02-14 15:31:45 C 11 49 11.99 +11 45 13.9 300
2001-02-14 15:35:21 C 11 49 12.23 +11 45 14.8 300
2001-02-14 15:38:58 C 11 49 12.48 +11 45 15.8 300
2001-02-14 15:42:35 C 11 49 12.62 +11 45 16.9 300
2001-02-14 15:46:11 C 11 49 12.89 +11 45 18.2 300
2001-02-14 15:49:50 C 11 49 13.08 +11 45 19.1 300
2001-02-14 15:53:26 C 11 49 13.29 +11 45 20.6 300
2001-02-14 16:00:40 C 11 49 13.70 +11 45 22.5 300
2001-02-14 16:04:17 C 11 49 13.97 +11 45 23.6 300
2001-02-14 16:07:54 C 11 49 14.18 +11 45 24.6 300
2001-02-14 16:11:32 C 11 49 14.41 +11 45 25.7 300
2001-02-14 16:15:09 C 11 49 14.60 +11 45 26.5 300
2001-02-14 16:18:46 C 11 49 14.84 +11 45 27.4 300
2001-02-14 16:22:22 C 11 49 15.05 +11 45 28.4 300
2001-02-14 16:26:00 C 11 49 15.27 +11 45 29.9 300
2001-02-14 16:29:38 C 11 49 15.50 +11 45 30.3 300
2001-02-14 16:33:15 C 11 49 15.76 +11 45 31.6 300
2001-02-14 16:36:52 C 11 49 15.93 +11 45 32.8 300
2001-02-14 16:40:29 C 11 49 16.18 +11 45 33.7 300
2001-02-14 16:44:06 C 11 49 16.39 +11 45 34.5 300
2001-02-14 16:47:43 C 11 49 16.63 +11 45 35.2 300
2001-02-14 16:54:57 C 11 49 17.04 +11 45 37.8 300
2001-02-14 16:58:33 C 11 49 17.28 +11 45 38.4 300
2001-02-14 17:02:10 C 11 49 17.42 +11 45 40.0 300
2001-02-14 17:05:46 C 11 49 17.69 +11 45 40.6 300
2001-02-14 17:09:23 C 11 49 17.90 +11 45 41.5 300
2001-02-14 17:12:59 C 11 49 18.14 +11 45 42.7 300
2001-02-14 17:16:35 C 11 49 18.35 +11 45 43.3 300
2001-02-14 17:20:11 C 11 49 18.60 +11 45 44.7 300
2001-02-14 17:23:48 C 11 49 18.76 +11 45 45.6 300
2001-02-14 17:27:25 C 11 49 18.98 +11 45 46.8 300
2001-02-14 17:31:01 C 11 49 19.16 +11 45 47.9 300
2001-02-14 17:41:52 C 11 49 19.87 +11 45 50.8 300
2001-02-14 17:45:29 C 11 49 20.06 +11 45 51.4 300
2001-02-14 17:49:05 C 11 49 20.27 +11 45 52.8 300
2001-02-14 17:52:41 C 11 49 20.46 +11 45 53.3 300
2001-02-14 17:56:18 C 11 49 20.70 +11 45 54.6 300
2001-02-14 17:59:54 C 11 49 20.95 +11 45 55.3 300
2001-02-14 18:07:07 C 11 49 21.37 +11 45 57.5 300
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)