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
2018-12-04 05:11:22 C 02 59 27.18 +16 28 55.3 V G96
2018-12-04 23:06:39 C 02 58 16.03 +16 25 11.3 20.4 q J43
2018-12-04 23:18:44 C 02 58 15.19 +16 25 08.3 20.3 q J43
2018-12-04 23:30:59 C 02 58 14.42 +16 25 05.8 20.8 q J43
2018-12-04 23:43:07 C 02 58 13.54 +16 25 03.9 20.2 q J43
2018-12-13 03:11:16 C 02 47 18.81 +15 50 53.2 V G96
2018-12-13 03:22:29 C 02 47 18.34 +15 50 51.4 V G96
2018-12-13 03:30:33 C 02 47 17.92 +15 50 50.0 V G96
2018-12-13 03:38:38 C 02 47 17.53 +15 50 49.3 V G96
2018-12-29 20:13:12 C 02 36 59.48 +15 27 25.6 L 950
2018-12-29 20:25:24 C 02 36 59.38 +15 27 25.9 L 950
2018-12-29 20:37:28 C 02 36 59.28 +15 27 26.3 L 950
2018-12-29 20:49:29 C 02 36 59.15 +15 27 26.7 L 950
2019-02-04 00:54:56 C 03 00 32.72 +17 44 27.0 u H21
2019-02-04 01:19:49 C 03 00 34.04 +17 44 33.4 u H21
2019-02-04 01:42:29 C 03 00 35.20 +17 44 39.2 u H21
2020-11-14 13:53:58 C 11 48 42.35 +02 34 43.4 V 568
2020-11-14 14:14:24 C 11 48 45.15 +02 34 25.8 V 568
2020-11-14 14:34:38 C 11 48 47.96 +02 34 08.0 V 568
2020-11-14 15:15:10 C 11 48 53.56 +02 33 32.3 V 568
2020-11-14 15:35:25 C 11 48 56.34 +02 33 14.8 V 568
2021-10-08 08:27:40 C 03 38 12.09 +17 20 28.8 V G96
2021-10-08 08:35:08 C 03 38 11.74 +17 20 28.1 V G96
2021-10-08 08:42:38 C 03 38 11.44 +17 20 27.0 V G96
2021-10-08 08:50:08 C 03 38 11.12 +17 20 25.8 V G96
2021-10-13 13:31:10 C 03 32 22.332 +17 01 58.77 U F52
2021-10-13 13:49:42 C 03 32 21.291 +17 01 55.61 U F52
2021-10-13 14:08:06 C 03 32 20.254 +17 01 52.38 U F52
2021-10-13 14:26:34 C 03 32 19.225 +17 01 49.20 U F52
2021-10-27 09:20:42 C 03 10 08.66 +15 48 05.8 V G96
2021-10-27 09:28:17 C 03 10 08.05 +15 48 03.9 V G96
2021-10-27 09:35:51 C 03 10 07.42 +15 48 01.8 V G96
2021-10-27 09:43:26 C 03 10 06.82 +15 47 59.6 V G96
2021-10-27 12:16:27 C 03 09 54.825 +15 47 20.64 U F52
2021-10-27 12:35:22 C 03 09 53.263 +15 47 15.52 U F52
2021-10-27 13:12:40 C 03 09 50.214 +15 47 05.05 U F52
2021-10-28 07:40:40 C 03 08 23.03 +15 41 58.1 V 703
2021-10-28 07:48:16 C 03 08 22.27 +15 41 55.9 V 703
2021-10-28 08:03:27 C 03 08 20.99 +15 41 52.6 V 703
2021-10-28 12:48:29 C 03 07 57.850 +15 40 35.17 U F52
2021-10-28 13:07:50 C 03 07 56.235 +15 40 29.66 U F52
2021-10-28 13:27:14 C 03 07 54.629 +15 40 24.09 U F52
2021-10-28 13:46:33 C 03 07 53.026 +15 40 18.58 U F52
2021-10-29 12:14:10 C 03 06 04.856 +15 34 00.46 U F52
2021-10-29 12:31:36 C 03 06 03.380 +15 33 55.34 U F52
2021-10-29 12:49:04 C 03 06 01.908 +15 33 50.27 U F52
2021-11-06 11:00:15 C 02 50 12.374 +14 36 57.29 U F52
2021-11-06 11:35:14 C 02 50 09.307 +14 36 46.33 U F52
2021-11-06 11:52:40 C 02 50 07.791 +14 36 40.89 U F52
2021-11-08 06:50:44 C 02 46 32.48 +14 23 21.8 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)