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
2024-10-04 17:04:01 C 02 47 51.40 +13 21 18.8 V D29
2024-10-04 17:44:45 C 02 47 48.84 +13 21 08.3 V D29
2024-10-06 09:30:35 C 02 45 23.101 +13 10 35.31 X F52
2024-10-06 09:46:51 C 02 45 22.027 +13 10 31.08 X F52
2024-10-06 10:03:11 C 02 45 20.948 +13 10 26.57 X F52
2024-10-06 10:19:36 C 02 45 19.862 +13 10 22.14 X F52
2024-10-23 06:38:27 C 02 14 46.154 +10 56 34.87 V G96
2024-10-23 06:46:29 C 02 14 45.445 +10 56 32.10 V G96
2024-10-23 06:54:32 C 02 14 44.776 +10 56 29.08 V G96
2024-10-23 07:02:34 C 02 14 44.084 +10 56 26.23 V G96
2024-10-24 06:55:10 C 02 12 45.922 +10 47 43.15 V G96
2024-10-24 07:02:34 C 02 12 45.299 +10 47 40.31 V G96
2024-10-24 07:10:00 C 02 12 44.651 +10 47 37.72 V G96
2024-10-24 07:17:26 C 02 12 44.014 +10 47 34.98 V G96
2024-10-29 11:51:02 C 02 02 34.40 +10 02 28.1 V D29
2024-10-29 12:11:24 C 02 02 32.77 +10 02 21.2 V D29
2024-10-29 12:31:45 C 02 02 31.05 +10 02 14.2 V D29
2024-10-30 06:54:22 C 02 01 02.471 +09 55 44.87 V G96
2024-10-30 07:01:50 C 02 01 01.844 +09 55 41.95 V G96
2024-10-30 07:09:16 C 02 01 01.240 +09 55 39.58 V G96
2024-10-30 07:16:42 C 02 01 00.620 +09 55 36.73 V G96
2024-10-30 12:24:46 C 02 00 36.80 +09 53 47.6 V D29
2024-10-30 12:45:08 C 02 00 35.13 +09 53 40.8 V D29
2024-10-30 13:05:29 C 02 00 33.46 +09 53 33.5 V D29
2024-10-31 06:25:30 C 01 59 10.979 +09 47 30.80 V 703
2024-10-31 06:28:49 C 01 59 10.702 +09 47 28.82 V 703
2024-10-31 06:35:27 C 01 59 10.266 +09 47 29.04 V 703
2024-11-02 07:12:10 C 01 55 24.827 +09 30 52.15 X F52
2024-11-02 07:28:26 C 01 55 23.540 +09 30 46.78 X F52
2024-11-02 07:44:48 C 01 55 22.240 +09 30 41.30 X F52
2024-11-02 08:01:12 C 01 55 20.940 +09 30 35.86 X F52
2024-11-05 14:55:17 C 01 49 31.03 +09 05 00.1 V D29
2024-11-05 15:15:39 C 01 49 29.53 +09 04 53.6 V D29
2024-11-05 15:36:01 C 01 49 27.99 +09 04 47.0 V D29
2024-11-10 17:59:02 C 01 41 17.715 +08 29 38.39 O18
2024-11-10 18:00:49 C 01 41 17.603 +08 29 37.88 O18
2024-11-10 18:02:37 C 01 41 17.490 +08 29 37.60 O18
2024-11-19 18:01:30 C 01 30 00.454 +07 44 19.34 O18
2024-11-19 18:05:22 C 01 30 00.277 +07 44 18.59 O18
2024-11-19 18:06:39 C 01 30 00.232 +07 44 18.45 O18
2024-11-21 06:17:51 C 01 28 32.965 +07 39 04.11 X F52
2024-11-21 06:35:32 C 01 28 32.229 +07 39 01.67 X F52
2024-11-21 06:53:05 C 01 28 31.499 +07 38 59.31 X F52
2024-11-21 07:10:42 C 01 28 30.759 +07 38 56.87 X F52
2024-11-23 06:28:12 C 01 26 46.954 +07 33 02.12 V G96
2024-11-23 06:36:18 C 01 26 46.666 +07 33 01.04 V G96
2024-11-23 06:44:25 C 01 26 46.370 +07 33 00.11 V G96
2024-11-23 06:52:32 C 01 26 46.068 +07 32 59.14 V G96
2024-11-28 06:17:48 C 01 23 22.573 +07 23 23.01 X F51
2024-11-28 06:34:06 C 01 23 22.143 +07 23 22.31 X 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)