164201 (2004 EC)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8600848851 ± 3.05e-08
Semi-major axis (a)1.9968627832 AU ± 1.31e-09
Inclination (i)34.58200983° ± 7.00e-06
Long. of Asc. Node (Ω)28.82252353° ± 5.91e-06
Arg. of Perihelion (ω)10.34006761° ± 6.63e-06
Mean Anomaly (M)262.66310102° ± 2.79e-06
Mean Motion (n)0.3492930480°/day ± 3.44e-10
Perihelion dist (q)0.27939129 AU ± 6.08e-08
Aphelion dist (Q)3.71433428 AU ± 6.09e-08
Orbital Period2.82177469 yr ± 2.78e-09
Physical Parameters
H (abs. magnitude)15.73
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.282″
Uncertainty0
Orbit TypeApollo
MOID0.412463 AU
Observations Used1059
Oppositions14
Arc Total2004-2025
First Observation Used2004-03-10
Last Observation Used2025-05-29
Observations (1134)
Date Type RA Dec Mag Band Observatory
2004-04-02 03:50:28 C 11 47 23.56 +54 04 15.7 c 750
2004-04-02 21:18:46 11 44 06.08 +53 10 35.1 o 084
2004-04-03 20:14:59 C 11 40 10.99 +52 01 49.6 o A16
2004-04-03 20:22:03 C 11 40 09.50 +52 01 26.9 o A16
2004-04-03 20:29:04 C 11 40 08.44 +52 01 06.9 o A16
2004-04-03 20:36:27 C 11 40 07.22 +52 00 45.5 o A16
2004-04-03 20:43:11 C 11 40 06.13 +52 00 25.0 o A16
2004-04-03 22:09:11 11 39 51.65 +51 56 08.5 o 084
2004-04-04 21:52:46 11 36 14.25 +50 47 01.3 o 084
2004-04-05 21:14:20 C 11 33 02.03 +49 40 59.9 o 170
2004-04-05 21:16:05 C 11 33 01.78 +49 40 55.0 o 170
2004-04-05 21:16:33 C 11 33 01.25 +49 40 49.8 o 084
2004-04-05 21:20:46 C 11 33 01.16 +49 40 41.9 o 170
2004-04-06 21:51:03 C 11 29 58.63 +48 33 20.3 o 084
2004-04-07 19:56:12 C 11 27 31.27 +47 34 30.9 r J87
2004-04-07 19:59:22 C 11 27 30.91 +47 34 22.7 r J87
2004-04-07 20:02:32 C 11 27 30.60 +47 34 14.5 r J87
2004-04-07 20:05:42 C 11 27 30.23 +47 34 06.2 r J87
2004-04-07 20:19:30 C 11 27 28.71 +47 33 30.3 r J87
2004-04-07 20:26:37 C 11 27 27.92 +47 33 11.7 r J87
2004-04-07 21:40:46 C 11 27 19.55 +47 29 57.6 c 560
2004-04-07 21:43:56 C 11 27 19.21 +47 29 49.0 c 560
2004-04-07 21:46:22 C 11 27 18.94 +47 29 42.5 c 560
2004-04-07 23:55:16 C 11 27 04.83 +47 23 59.9 o 084
2004-04-08 06:49:40 C 11 26 21.97 +47 06 08.2 c H41
2004-04-08 06:57:00 C 11 26 21.11 +47 05 49.3 c H41
2004-04-08 06:59:04 C 11 26 20.98 +47 05 43.7 c H41
2004-04-08 07:01:11 C 11 26 20.76 +47 05 38.0 c H41
2004-04-08 07:06:12 C 11 26 20.21 +47 05 25.4 c H41
2004-04-09 01:43:13 C 11 24 31.06 +46 17 39.0 o 084
2004-04-09 04:48:08 C 11 24 14.39 +46 10 02.2 r H41
2004-04-09 04:51:28 C 11 24 14.06 +46 09 53.5 r H41
2004-04-09 04:53:36 C 11 24 13.85 +46 09 48.8 r H41
2004-04-09 04:55:45 C 11 24 13.64 +46 09 43.2 r H41
2004-04-09 13:10:37 C 11 23 28.64 +45 49 05.3 m 379
2004-04-09 13:20:04 C 11 23 27.70 +45 48 41.0 m 379
2004-04-10 23:53:51 C 11 20 35.06 +44 24 28.4 o 084
2004-04-12 19:27:36 C 11 17 31.91 +42 43 52.9 r 185
2004-04-12 19:37:19 C 11 17 31.26 +42 43 31.2 r 185
2004-04-12 19:40:08 C 11 17 31.09 +42 43 24.6 c 127
2004-04-12 19:47:47 C 11 17 30.58 +42 43 07.4 c 127
2004-04-12 19:57:07 C 11 17 29.95 +42 42 46.4 c 127
2004-04-12 20:03:52 C 11 17 29.53 +42 42 31.3 c 127
2004-04-12 20:09:43 C 11 17 29.13 +42 42 18.4 c 127
2004-04-12 20:14:41 C 11 17 28.73 +42 42 07.7 r 185
2004-04-12 20:31:47 C 11 17 27.59 +42 41 30.0 r 185
2004-04-13 21:46:53 C 11 15 55.82 +41 45 46.2 o 084
2004-04-14 01:04:32 C 11 15 44.29 +41 38 36.0 o 084
2004-04-14 07:30:20 C 11 15 22.72 +41 24 50.8 r H41
2004-04-14 07:34:26 C 11 15 22.50 +41 24 43.2 r H41