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
2015-12-06 11:28:35 C 03 57 26.313 +20 26 04.73 L F51
2015-12-06 11:48:09 C 03 57 24.567 +20 26 00.96 L F51
2015-12-08 05:18:27 C 03 53 53.83 +20 18 25.6 q G96
2015-12-08 05:25:48 C 03 53 53.16 +20 18 24.0 q G96
2015-12-08 05:33:10 C 03 53 52.54 +20 18 22.8 q G96
2015-12-08 05:40:31 C 03 53 51.92 +20 18 21.4 q G96
2015-12-10 18:30:54 C 03 48 53.17 +20 07 13.1 q 246
2015-12-10 18:33:51 C 03 48 52.97 +20 07 11.9 q 246
2015-12-10 18:36:26 C 03 48 52.76 +20 07 12.1 q 246
2015-12-31 13:12:30 C 03 20 36.33 +18 59 46.6 q D29
2015-12-31 13:37:54 C 03 20 35.50 +18 59 44.2 q D29
2015-12-31 14:03:18 C 03 20 34.66 +18 59 43.2 q D29
2016-01-02 02:31:12 C 03 19 32.92 +18 57 35.0 q G96
2016-01-02 02:39:59 C 03 19 32.68 +18 57 34.4 q G96
2016-01-02 02:48:46 C 03 19 32.43 +18 57 34.0 q G96
2016-01-02 02:57:32 C 03 19 32.18 +18 57 33.9 q G96
2016-01-08 08:07:47 C 03 16 46.333 +18 53 43.21 L F51
2016-01-08 08:27:24 C 03 16 46.065 +18 53 43.10 L F51
2016-01-08 08:46:59 C 03 16 45.810 +18 53 43.08 L F51
2016-01-08 09:06:40 C 03 16 45.541 +18 53 42.93 L F51
2016-01-24 07:11:47 C 03 19 39.321 +19 17 45.60 L F51
2016-01-24 07:32:21 C 03 19 39.754 +19 17 47.93 L F51
2016-01-24 07:52:55 C 03 19 40.222 +19 17 50.21 L F51
2018-11-02 12:23:22 C 04 00 39.15 +19 18 46.4 V G96
2018-11-02 12:27:28 C 04 00 38.82 +19 18 45.9 V G96
2018-11-02 12:31:33 C 04 00 38.55 +19 18 45.5 V G96
2018-11-02 12:35:40 C 04 00 38.28 +19 18 45.1 V G96
2018-11-08 12:33:22 C 03 49 35.171 +18 52 40.17 U F52
2018-11-08 12:53:59 C 03 49 33.426 +18 52 35.88 U F52
2018-11-08 13:35:04 C 03 49 29.978 +18 52 27.36 U F52
2018-11-08 17:35:45 C 03 49 10.67 +18 51 37.0 q D29
2018-11-08 17:56:06 C 03 49 08.96 +18 51 32.9 q D29
2018-11-08 18:16:28 C 03 49 07.24 +18 51 28.5 q D29
2018-11-09 00:55:09 C 03 48 35.05 +18 50 08.8 20.0 q J43
2018-11-09 01:07:34 C 03 48 33.96 +18 50 06.0 20.1 q J43
2018-11-09 01:20:02 C 03 48 32.88 +18 50 03.5 20.4 q J43
2018-11-09 01:32:28 C 03 48 31.75 +18 50 01.0 20.4 q J43
2018-11-09 06:39:07 C 03 48 07.01 +18 48 57.4 V G96
2018-11-09 06:46:30 C 03 48 06.39 +18 48 56.3 V G96
2018-11-09 06:53:56 C 03 48 05.75 +18 48 54.8 V G96
2018-11-09 07:01:20 C 03 48 05.13 +18 48 52.9 V G96
2018-11-14 07:04:28 C 03 37 57.04 +18 22 41.3 V 703
2018-11-14 07:32:21 C 03 37 55.04 +18 22 30.7 V 703
2018-11-17 06:22:58 C 03 31 47.92 +18 05 53.8 V G96
2018-11-17 06:30:58 C 03 31 47.17 +18 05 51.7 V G96
2018-11-17 06:38:57 C 03 31 46.48 +18 05 49.6 V G96
2018-11-17 06:46:57 C 03 31 45.72 +18 05 47.7 V G96
2018-12-04 04:47:01 C 02 59 28.86 +16 28 59.9 V G96
2018-12-04 04:55:10 C 02 59 28.30 +16 28 58.3 V G96
2018-12-04 05:03:16 C 02 59 27.73 +16 28 56.6 V G96
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)