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
2004-02-24 22:41:51 C 07 24 11.78 +29 13 59.8 r 240
2004-02-24 22:47:03 C 07 24 11.33 +29 14 00.6 r 240
2004-02-24 22:49:39 C 07 24 11.09 +29 14 01.1 r 240
2004-02-24 22:54:51 C 07 24 10.68 +29 14 02.0 r 240
2004-02-24 22:56:09 C 07 24 10.55 +29 14 02.3 r 240
2004-02-24 22:58:43 C 07 24 10.35 +29 14 02.7 r 240
2004-02-26 01:50:45 C 07 22 11.55 +29 18 36.7 d 712
2004-02-26 01:56:00 C 07 22 11.12 +29 18 39.9 d 712
2004-02-26 02:10:53 C 07 22 09.94 +29 18 41.6 d 712
2004-02-26 02:17:59 C 07 22 09.25 +29 18 43.9 d 712
2004-02-26 19:58:52 C 07 20 52.69 +29 21 21.4 r 240
2004-02-26 20:03:31 C 07 20 52.34 +29 21 22.1 r 240
2004-02-26 20:06:37 C 07 20 52.11 +29 21 22.5 r 240
2004-02-26 20:15:54 C 07 20 51.39 +29 21 23.9 r 240
2004-02-26 20:26:45 C 07 20 50.54 +29 21 25.5 r 240
2004-02-27 03:04:45 C 07 20 23.26 +29 22 28.0 d 712
2004-02-27 03:07:10 C 07 20 22.89 +29 22 29.1 d 712
2004-02-27 03:29:41 C 07 20 21.35 +29 22 31.8 d 712
2004-02-27 03:48:33 C 07 20 19.83 +29 22 34.3 d 712
2004-03-21 03:25:45 C 07 04 23.124 +29 32 51.89 r 673
2004-03-21 03:39:49 C 07 04 23.113 +29 32 50.83 r 673
2004-03-21 03:46:29 C 07 04 23.117 +29 32 50.30 r 673
2004-04-12 21:39:52 C 07 22 50.71 +28 24 28.9 r 240
2004-04-12 21:57:33 C 07 22 51.58 +28 24 24.3 r 240
2004-04-12 22:09:04 C 07 22 52.19 +28 24 21.8 r 240
2004-04-12 22:25:12 C 07 22 52.99 +28 24 19.0 r 240
2004-04-12 22:34:26 C 07 22 53.47 +28 24 16.5 r 240
2004-04-12 22:39:02 C 07 22 53.70 +28 24 15.5 r 240
2004-04-12 22:43:39 C 07 22 53.95 +28 24 14.4 r 240
2004-04-20 03:20:56 C 07 32 29.74 +27 49 58.2 18.1 c 704
2004-04-20 03:37:22 C 07 32 30.60 +27 49 54.0 18.6 c 704
2004-04-20 03:53:42 C 07 32 31.45 +27 49 49.7 18.7 c 704
2004-04-20 04:09:57 C 07 32 32.26 +27 49 45.4 19.3 c 704
2004-04-20 04:26:13 C 07 32 33.13 +27 49 40.5 19.7 c 704
2004-04-22 03:20:38 C 07 35 19.70 +27 39 05.7 18.6 c 704
2004-04-22 03:36:28 C 07 35 20.50 +27 39 01.1 18.8 c 704
2004-04-22 03:52:55 C 07 35 21.38 +27 38 56.5 18.7 c 704
2004-04-22 04:10:10 C 07 35 22.28 +27 38 51.9 19.1 c 704
2004-04-22 04:26:18 C 07 35 23.18 +27 38 47.8 19.3 c 704
2004-04-24 04:25:20 C 07 38 16.277 +27 27 21.46 r 673
2004-04-24 04:32:09 C 07 38 16.653 +27 27 19.36 r 673
2004-04-24 04:39:00 C 07 38 16.998 +27 27 17.37 r 673
2004-04-25 04:40:55 C 07 39 44.360 +27 21 19.15 r 673
2004-06-27 09:00:05 C 05 21 33.04 -62 42 41.1 c D87
2004-06-27 09:02:26 C 05 21 24.10 -62 43 41.9 c D87
2004-06-27 09:05:12 C 05 21 13.44 -62 44 48.6 c D87
2004-07-01 05:47:17 C 22 41 39.31 -61 33 23.5 o 809
2004-07-01 05:56:02 C 22 41 24.50 -61 31 47.4 o 809
2004-07-01 17:30:39 C 22 25 31.165 -59 19 25.89 r 422
2004-07-01 17:31:47 C 22 25 29.619 -59 19 13.44 r 422
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)