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
2021-11-08 06:58:12 C 02 46 31.83 +14 23 19.4 V G96
2021-11-08 07:05:42 C 02 46 31.18 +14 23 17.3 V G96
2021-11-08 07:13:10 C 02 46 30.52 +14 23 15.0 V G96
2021-11-09 10:50:16 C 02 44 12.868 +14 14 45.83 U F51
2021-11-09 11:08:50 C 02 44 11.262 +14 14 40.04 U F51
2021-11-09 11:27:22 C 02 44 09.682 +14 14 34.30 U F51
2021-11-10 23:41:53 C 02 41 11.54 +14 03 25.0 20.0 q J43
2021-11-10 23:54:05 C 02 41 10.51 +14 03 21.2 19.5 q J43
2021-11-11 00:06:17 C 02 41 09.48 +14 03 17.3 20.1 q J43
2021-11-11 00:18:36 C 02 41 08.42 +14 03 13.7 20.4 q J43
2021-11-11 07:20:53 C 02 40 34.659 +14 01 06.30 U F52
2021-11-11 07:21:48 C 02 40 34.580 +14 01 05.84 U F52
2021-11-11 07:35:39 C 02 40 33.418 +14 01 02.06 U F52
2021-11-11 07:36:33 C 02 40 33.344 +14 01 01.68 U F52
2021-11-11 07:50:21 C 02 40 32.179 +14 00 57.46 U F52
2021-11-11 07:51:16 C 02 40 32.102 +14 00 57.16 U F52
2021-11-11 08:05:59 C 02 40 30.861 +14 00 52.74 U F52
2021-11-13 17:19:13 C 02 35 55.62 +13 43 35.1 V D29
2021-11-13 17:44:41 C 02 35 53.57 +13 43 27.2 V D29
2021-11-13 18:10:08 C 02 35 51.50 +13 43 19.2 V D29
2021-11-27 10:23:15 C 02 13 44.531 +12 19 53.28 U F52
2021-11-27 10:38:49 C 02 13 43.658 +12 19 50.21 U F52
2021-11-27 10:54:22 C 02 13 42.778 +12 19 46.93 U F52
2021-11-27 11:09:55 C 02 13 41.904 +12 19 43.80 U F52
2021-11-29 02:28:43 C 02 11 40.34 +12 12 16.2 V G96
2021-11-29 02:36:53 C 02 11 39.90 +12 12 14.4 V G96
2021-11-29 02:45:04 C 02 11 39.47 +12 12 13.2 V G96
2021-11-29 02:53:16 C 02 11 39.06 +12 12 11.9 V G96
2021-11-30 03:11:50 C 02 10 27.72 +12 07 56.9 V G96
2021-11-30 03:19:52 C 02 10 27.32 +12 07 55.4 V G96
2021-11-30 03:27:54 C 02 10 26.92 +12 07 54.1 V G96
2021-11-30 03:35:56 C 02 10 26.50 +12 07 52.6 V G96
2022-03-25 03:14:30 C 04 11 55.03 +21 52 38.7 V V00
2022-03-25 03:22:19 C 04 11 55.78 +21 52 40.9 V V00
2022-03-25 03:30:05 C 04 11 56.53 +21 52 42.6 V V00
2022-03-25 03:38:11 C 04 11 57.30 +21 52 45.0 V V00
2024-08-09 13:49:02 C 02 43 40.475 +13 28 31.38 X F52
2024-08-09 14:06:04 C 02 43 41.362 +13 28 35.15 X F52
2024-08-09 14:23:06 C 02 43 42.204 +13 28 38.90 X F52
2024-09-11 12:33:04 C 03 05 27.168 +14 42 44.85 X F52
2024-09-11 12:52:02 C 03 05 27.036 +14 42 44.22 X F52
2024-09-11 13:11:04 C 03 05 26.909 +14 42 43.53 X F52
2024-09-11 13:30:02 C 03 05 26.781 +14 42 42.89 X F52
2024-10-02 10:41:06 C 02 50 57.422 +13 34 50.02 X F52
2024-10-02 10:57:31 C 02 50 56.482 +13 34 46.20 X F52
2024-10-02 11:13:58 C 02 50 55.532 +13 34 42.37 X F52
2024-10-04 08:11:05 C 02 48 22.936 +13 23 36.20 V G96
2024-10-04 08:18:28 C 02 48 22.482 +13 23 33.97 V G96
2024-10-04 08:25:53 C 02 48 22.000 +13 23 32.14 V G96
2024-10-04 08:33:17 C 02 48 21.571 +13 23 30.05 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)