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
2015-03-27 02:58:47 C 21 54 54.23 -38 08 29.9 o K95
2015-03-27 03:11:34 C 21 54 57.41 -38 08 15.5 o K95
2015-03-31 03:11:45 C 22 19 33.32 -36 11 58.8 o K95
2015-03-31 03:24:31 C 22 19 36.54 -36 11 41.2 o K95
2016-03-13 12:53:40 C 14 33 26.575 -13 52 42.01 L F51
2016-03-13 12:57:23 C 14 33 26.429 -13 52 41.65 L F51
2016-03-13 13:11:35 C 14 33 25.895 -13 52 40.62 L F51
2016-03-13 13:15:16 C 14 33 25.746 -13 52 40.64 L F51
2016-03-13 13:29:24 C 14 33 25.217 -13 52 39.53 L F51
2016-03-13 13:33:08 C 14 33 25.070 -13 52 39.46 L F51
2016-03-13 13:47:20 C 14 33 24.532 -13 52 38.50 L F51
2016-03-13 13:51:03 C 14 33 24.387 -13 52 38.31 L F51
2016-04-02 07:47:47 C 14 11 34.02 -13 02 20.5 o 691
2016-04-02 08:14:33 C 14 11 32.62 -13 02 16.7 o 691
2016-04-02 08:41:20 C 14 11 31.11 -13 02 13.1 o 691
2016-04-13 08:53:34 C 13 56 54.19 -12 19 30.5 q G96
2016-04-13 08:59:34 C 13 56 53.83 -12 19 29.4 q G96
2016-04-13 09:05:35 C 13 56 53.49 -12 19 28.2 q G96
2016-04-13 09:11:35 C 13 56 53.13 -12 19 27.4 q G96
2016-04-16 10:03:57 C 13 52 45.920 -12 06 31.45 L F51
2016-04-16 10:20:44 C 13 52 44.970 -12 06 28.39 L F51
2016-04-16 10:54:20 C 13 52 43.045 -12 06 22.46 L F51
2018-04-12 05:39:55 C 04 16 39.97 +52 55 11.6 U T05
2018-04-12 05:49:40 C 04 16 45.82 +52 55 27.4 U T05
2018-04-12 06:02:40 C 04 16 53.53 +52 55 48.5 U T05
2018-04-12 06:15:40 C 04 17 01.37 +52 56 09.1 U T05
2018-04-19 22:21:46 C 06 09 11.21 +54 27 46.2 U Z80
2018-04-19 22:28:44 C 06 09 15.19 +54 27 41.9 U Z80
2018-04-19 22:35:43 C 06 09 19.17 +54 27 37.6 U Z80
2018-04-24 20:26:08 C 07 10 53.18 +52 24 40.4 q K30
2018-04-24 20:35:55 C 07 10 57.72 +52 24 26.4 q K30
2018-04-24 20:45:41 C 07 11 02.30 +52 24 12.2 q K30
2018-04-25 03:42:46 C 07 14 14.78 +52 14 07.7 U 703
2018-04-25 03:51:12 C 07 14 18.57 +52 13 55.3 U 703
2018-04-25 03:59:38 C 07 14 22.40 +52 13 42.6 U 703
2018-04-25 04:08:04 C 07 14 26.28 +52 13 30.1 U 703
2018-04-26 03:41:55 C 07 24 56.94 +51 37 25.9 U 703
2018-04-26 03:50:11 C 07 25 00.50 +51 37 13.0 U 703
2018-04-26 03:55:20 C 07 25 02.72 +51 37 04.5 U G96
2018-04-26 03:57:47 C 07 25 03.69 +51 37 00.3 U 703
2018-04-26 03:58:27 C 07 25 04.00 +51 36 59.6 U 703
2018-04-26 04:03:32 C 07 25 06.26 +51 36 51.4 U G96
2018-04-26 04:06:04 C 07 25 07.31 +51 36 47.2 U 703
2018-04-26 04:06:44 C 07 25 07.64 +51 36 46.2 U 703
2018-04-26 04:14:20 C 07 25 10.89 +51 36 34.4 U 703
2018-04-26 04:15:55 C 07 25 11.61 +51 36 31.5 U G96
2018-04-26 04:24:09 C 07 25 15.16 +51 36 18.3 U G96
2018-05-03 04:17:23 C 08 25 31.99 +46 34 20.1 U 703
2018-05-03 04:32:58 C 08 25 36.53 +46 33 50.2 U 703
2018-05-03 04:40:46 C 08 25 38.80 +46 33 35.0 U 703