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
2012-12-08 07:42:19 C 05 03 08.64 +23 20 13.5 r G96
2012-12-08 08:37:26 C 05 03 03.27 +23 20 11.8 r 703
2012-12-08 08:46:35 C 05 03 02.41 +23 20 09.8 r 703
2012-12-08 08:55:35 C 05 03 01.54 +23 20 09.4 r 703
2012-12-08 09:04:41 C 05 03 00.68 +23 20 08.8 r 703
2012-12-09 09:09:33 C 05 00 45.25 +23 18 49.2 r G96
2012-12-09 09:12:23 C 05 00 44.96 +23 18 48.8 r G96
2012-12-09 09:18:44 C 05 00 44.35 +23 18 48.1 r G96
2012-12-09 09:23:50 C 05 00 43.84 +23 18 48.0 r G96
2012-12-09 09:49:34 C 05 00 41.40 +23 18 46.3 r G96
2012-12-09 09:55:47 C 05 00 40.78 +23 18 45.6 r G96
2012-12-09 10:01:56 C 05 00 40.17 +23 18 45.5 r G96
2012-12-09 10:06:48 C 05 00 39.70 +23 18 45.0 r G96
2012-12-11 21:30:52 C 04 55 05.03 +23 14 50.2 19.4 u A14
2012-12-11 22:02:51 C 04 55 01.86 +23 14 48.1 19.4 u A14
2012-12-11 22:34:11 C 04 54 58.82 +23 14 46.3 19.8 u A14
2012-12-20 08:48:01 C 04 36 26.14 +22 56 16.0 c H06
2012-12-20 08:51:58 C 04 36 25.81 +22 56 15.9 c H06
2013-01-12 05:09:10 C 04 02 56.79 +22 04 47.4 r G96
2013-01-12 05:25:41 C 04 02 56.25 +22 04 46.4 r G96
2013-01-12 05:33:50 C 04 02 55.96 +22 04 46.6 r G96
2013-01-12 05:41:33 C 04 02 55.71 +22 04 45.7 r G96
2013-01-31 05:27:59 C 04 00 48.34 +22 10 35.1 r G96
2013-01-31 05:35:36 C 04 00 48.52 +22 10 35.2 r G96
2013-01-31 05:43:09 C 04 00 48.60 +22 10 36.5 r G96
2013-01-31 05:50:47 C 04 00 48.74 +22 10 36.7 r G96
2013-05-02 03:22:20 C 07 06 50.79 +24 10 44.5 u G96
2013-05-02 03:29:52 C 07 06 51.80 +24 10 43.1 u G96
2013-05-02 03:37:30 C 07 06 52.77 +24 10 40.4 u G96
2013-05-02 03:45:11 C 07 06 53.82 +24 10 39.1 u G96
2013-05-02 03:52:50 C 07 06 54.79 +24 10 37.3 u G96
2015-11-09 18:33:10 C 04 50 28.72 +21 47 47.6 q D29
2015-11-09 18:56:01 C 04 50 27.18 +21 47 47.1 q D29
2015-11-18 07:40:29 C 04 35 34.38 +21 31 26.7 R G45
2015-11-18 07:56:41 C 04 35 33.06 +21 31 25.1 R G45
2015-11-18 08:04:27 C 04 35 32.37 +21 31 24.8 R G45
2015-11-18 08:11:55 C 04 35 31.78 +21 31 24.1 R G45
2015-11-18 08:20:13 C 04 35 31.03 +21 31 23.1 R G45
2015-11-18 08:27:56 C 04 35 30.41 +21 31 22.2 R G45
2015-12-02 20:48:13 C 04 05 02.57 +20 41 27.7 q A13
2015-12-02 21:19:03 C 04 04 59.77 +20 41 22.2 q A13
2015-12-04 05:17:34 C 04 02 10.02 +20 35 47.9 q G96
2015-12-04 05:18:17 C 04 02 09.97 +20 35 47.8 q G96
2015-12-04 05:28:23 C 04 02 09.05 +20 35 45.8 q G96
2015-12-04 05:29:06 C 04 02 08.97 +20 35 45.8 q G96
2015-12-04 05:39:11 C 04 02 08.07 +20 35 43.9 q G96
2015-12-04 05:39:54 C 04 02 07.99 +20 35 43.7 q G96
2015-12-04 05:49:59 C 04 02 07.08 +20 35 42.1 q G96
2015-12-04 05:50:42 C 04 02 06.92 +20 35 41.5 q G96
2015-12-06 11:09:04 C 03 57 28.054 +20 26 08.39 L F51
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)