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
2004-04-14 07:40:28 C 11 15 22.15 +41 24 29.6 r H41
2004-04-14 07:42:35 C 11 15 22.06 +41 24 25.5 r H41
2004-04-14 07:45:21 C 11 15 21.89 +41 24 19.1 r H41
2004-04-14 20:17:32 C 11 14 42.74 +40 57 42.5 c 127
2004-04-14 20:24:14 C 11 14 42.39 +40 57 28.5 c 127
2004-04-14 20:29:25 C 11 14 42.08 +40 57 17.6 c 127
2004-04-14 20:45:16 C 11 14 41.23 +40 56 44.3 c 127
2004-04-14 20:50:28 C 11 14 40.95 +40 56 33.3 c 127
2004-04-15 06:12:55 C 11 14 12.06 +40 36 58.6 r H41
2004-04-15 06:16:44 C 11 14 11.82 +40 36 50.8 r H41
2004-04-15 06:20:32 C 11 14 11.60 +40 36 42.4 r H41
2004-04-15 06:22:21 C 11 14 11.54 +40 36 38.9 r H41
2004-04-15 06:24:08 C 11 14 11.42 +40 36 35.5 r H41
2004-04-15 20:32:27 C 11 13 31.42 +40 07 27.1 c 196
2004-04-15 20:45:15 C 11 13 30.81 +40 07 01.1 c 196
2004-04-15 21:23:53 C 11 13 28.89 +40 05 41.9 c 196
2004-04-16 00:16:24 C 11 13 20.57 +39 59 46.6 o 084
2004-04-16 02:07:40 C 11 13 16.22 +39 56 08.9 17.0 d H72
2004-04-16 02:10:31 C 11 13 16.15 +39 56 02.8 17.4 d H72
2004-04-16 02:13:20 C 11 13 15.98 +39 55 58.0 17.1 d H72
2004-04-16 03:18:24 C 11 13 12.79 +39 53 45.2 17.2 d H72
2004-04-16 03:21:14 C 11 13 12.60 +39 53 39.6 17.0 d H72
2004-04-16 03:24:03 C 11 13 12.51 +39 53 34.6 17.2 d H72
2004-04-16 03:25:22 C 11 13 12.58 +39 53 30.7 c H41
2004-04-16 03:26:53 C 11 13 12.29 +39 53 29.2 17.5 d H72
2004-04-16 03:29:17 C 11 13 12.37 +39 53 22.3 c H41
2004-04-16 03:32:45 C 11 13 12.16 +39 53 14.8 c H41
2004-04-16 03:35:15 C 11 13 12.14 +39 53 10.5 c H41
2004-04-16 04:37:24 C 11 13 09.33 +39 51 05.4 d 703
2004-04-16 04:58:47 C 11 13 08.27 +39 50 22.7 d 703
2004-04-16 05:20:43 C 11 13 07.22 +39 49 37.9 d 703
2004-04-16 05:42:13 C 11 13 06.18 +39 48 54.4 d 703
2004-04-16 19:42:59 C 11 12 30.40 +39 20 51.4 185
2004-04-16 19:45:46 C 11 12 30.25 +39 20 45.7 185
2004-04-16 20:03:07 C 11 12 29.48 +39 20 11.6 185
2004-04-16 20:18:29 C 11 12 28.82 +39 19 41.4 185
2004-04-16 20:25:50 C 11 12 28.50 +39 19 27.0 185
2004-04-16 20:35:08 C 11 12 28.08 +39 19 08.6 185
2004-04-16 20:50:06 C 11 12 27.29 +39 18 36.6 o 084
2004-04-17 21:01:15 C 11 11 30.55 +38 31 30.6 o 084
2004-04-18 02:39:53 C 11 11 18.46 +38 20 49.8 17.7 d H72
2004-04-18 02:42:58 C 11 11 18.27 +38 20 43.7 17.1 d H72
2004-04-18 02:46:04 C 11 11 18.20 +38 20 37.8 17.5 d H72
2004-04-18 02:49:08 C 11 11 17.99 +38 20 31.0 17.1 d H72
2004-04-18 04:16:38 C 11 11 14.78 +38 17 43.9 r H41
2004-04-18 04:18:33 C 11 11 14.67 +38 17 39.5 r H41
2004-04-18 04:20:27 C 11 11 14.60 +38 17 35.9 r H41
2004-04-18 04:22:16 C 11 11 14.53 +38 17 33.1 r H41
2004-04-18 04:24:33 C 11 11 14.40 +38 17 27.6 r H41
2004-04-18 04:26:32 C 11 11 14.46 +38 17 24.5 r H41