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
2007-01-23 06:07:13 C 06 19 41.82 +26 51 39.3 20.0 c 704
2007-01-23 09:03:44 C 06 19 24.86 +26 51 55.2 18.1 o 698
2007-01-23 09:11:04 C 06 19 24.25 +26 51 55.8 18.1 o 698
2007-01-23 09:17:14 C 06 19 23.68 +26 51 56.1 18.0 o 698
2007-01-23 09:23:51 C 06 19 22.88 +26 51 56.6 18.0 o 698
2007-01-23 09:29:59 C 06 19 22.36 +26 51 57.0 18.0 o 698
2007-01-24 04:53:16 C 06 17 37.92 +26 53 52.5 18.8 c 704
2007-01-24 05:10:58 C 06 17 36.28 +26 53 53.3 19.3 c 704
2007-01-24 05:23:47 C 06 17 35.06 +26 53 55.6 17.8 o 698
2007-01-24 05:28:45 C 06 17 34.56 +26 53 55.8 19.1 c 704
2007-01-24 05:31:58 C 06 17 34.46 +26 53 56.2 18.0 o 698
2007-01-24 05:46:26 C 06 17 32.93 +26 53 56.6 19.6 c 704
2007-01-24 06:04:09 C 06 17 31.22 +26 53 58.5 19.1 c 704
2007-01-24 07:57:29 C 06 17 20.59 +26 54 08.1 18.5 o 698
2009-12-16 08:01:15 C 06 07 54.12 +24 45 15.5 o H21
2009-12-16 08:06:10 C 06 07 53.64 +24 45 16.1 o H21
2009-12-16 08:10:29 C 06 07 53.21 +24 45 16.6 o H21
2010-01-02 19:59:59 C 05 27 25.63 +25 08 09.4 u 240
2010-01-02 20:20:19 C 05 27 23.78 +25 08 08.9 u 240
2010-01-02 20:39:50 C 05 27 21.98 +25 08 08.5 u 240
2010-01-03 02:28:38 C 05 26 50.20 +25 08 11.7 19.8 c H12
2010-01-03 03:09:31 C 05 26 46.07 +25 08 12.3 20.0 c H12
2010-01-03 03:50:11 C 05 26 42.36 +25 08 11.0 20.0 c H12
2010-01-04 05:17:32 C 05 24 22.07 +25 07 59.3 19.8 c H12
2010-01-04 06:37:16 C 05 24 14.52 +25 07 58.4 19.8 c H12
2010-01-05 04:06:45 C 05 22 19.60 +25 07 38.3 o 691
2010-01-05 04:59:19 C 05 22 14.46 +25 07 38.9 20.0 c H12
2010-01-05 05:50:19 C 05 22 09.84 +25 07 38.3 20.0 c H12
2010-02-20 02:56:19 C 04 54 49.64 +24 58 12.7 r G96
2010-02-20 03:04:39 C 04 54 49.89 +24 58 12.0 r G96
2010-02-20 03:22:07 C 04 54 50.54 +24 58 12.5 r G96
2010-02-20 03:41:04 C 04 54 51.15 +24 58 13.7 r G96
2010-12-04 05:52:35 C 21 54 44.18 -14 19 17.5 t 568
2010-12-04 05:55:03 C 21 54 44.44 -14 19 16.4 t 568
2010-12-04 05:57:40 C 21 54 44.71 -14 19 14.8 t 568
2010-12-04 06:00:09 C 21 54 44.97 -14 19 13.4 t 568
2010-12-04 06:02:38 C 21 54 45.26 -14 19 11.2 t 568
2010-12-04 06:05:15 C 21 54 45.50 -14 19 10.0 t 568
2010-12-04 06:07:43 C 21 54 45.77 -14 19 08.8 t 568
2010-12-04 06:17:55 C 21 54 46.84 -14 19 02.4 t 568
2010-12-04 06:20:27 C 21 54 47.11 -14 19 01.1 t 568
2010-12-04 06:45:54 C 21 54 49.81 -14 18 45.4 t 568
2010-12-04 06:48:23 C 21 54 50.05 -14 18 44.0 t 568
2010-12-04 07:01:14 C 21 54 51.44 -14 18 36.0 t 568
2010-12-04 07:03:50 C 21 54 51.70 -14 18 34.8 t 568
2012-11-13 08:55:37 C 05 46 50.27 +23 15 44.7 o 691
2012-11-13 09:51:50 C 05 46 47.65 +23 15 46.7 o 691
2012-11-13 10:10:12 C 05 46 46.72 +23 15 47.4 o 691
2012-12-08 07:16:07 C 05 03 11.19 +23 20 14.7 r G96
2012-12-08 07:33:47 C 05 03 09.46 +23 20 13.9 r 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)