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
2018-05-06 03:52:27 C 08 44 54.37 +44 17 48.0 U 703
2018-05-06 03:59:58 C 08 44 56.15 +44 17 33.5 U 703
2018-05-06 04:07:30 C 08 44 58.05 +44 17 19.4 U 703
2018-05-06 04:15:01 C 08 44 59.82 +44 17 04.7 U 703
2018-05-06 21:54:00 C 08 49 19.10 +43 43 35.9 U Z80
2018-05-06 22:02:50 C 08 49 21.21 +43 43 18.6 U Z80
2018-05-06 22:11:33 C 08 49 23.22 +43 43 02.6 U Z80
2018-05-09 04:35:17 C 09 01 43.08 +42 01 23.8 U 703
2018-05-09 04:43:37 C 09 01 44.95 +42 01 07.7 U 703
2018-05-09 04:51:57 C 09 01 46.66 +42 00 52.3 U 703
2018-05-09 05:00:16 C 09 01 48.44 +42 00 36.7 U 703
2018-05-10 05:56:24 C 09 07 01.07 +41 14 55.0 U T05
2018-05-10 06:09:57 C 09 07 03.75 +41 14 30.4 U T05
2018-05-10 06:22:52 C 09 07 06.35 +41 14 06.6 U T05
2018-05-10 06:35:39 C 09 07 08.92 +41 13 43.1 U T05
2018-05-12 06:06:33 C 09 16 23.06 +39 48 21.3 U T08
2018-05-12 06:10:03 C 09 16 23.71 +39 48 15.4 U T08
2018-05-12 06:20:50 C 09 16 25.62 +39 47 56.5 U T08
2018-05-12 06:34:56 C 09 16 28.26 +39 47 30.9 U T08
2018-05-14 04:33:11 C 09 24 39.31 +38 27 21.4 U 703
2018-05-14 04:41:34 C 09 24 40.75 +38 27 06.5 U 703
2018-05-14 04:49:56 C 09 24 42.13 +38 26 52.4 U 703
2018-05-14 04:58:18 C 09 24 43.56 +38 26 37.5 U 703
2018-05-14 07:31:03 C 09 25 09.59 +38 22 17.7 U T05
2018-05-14 07:33:29 C 09 25 10.05 +38 22 14.0 U T05
2018-05-14 07:56:43 C 09 25 13.89 +38 21 33.3 U T05
2018-05-14 07:59:00 C 09 25 14.29 +38 21 29.1 U T05
2018-05-14 08:22:45 C 09 25 18.24 +38 20 48.2 U T05
2018-05-14 08:23:25 C 09 25 18.47 +38 20 46.9 U T05
2018-05-15 07:46:00 C 09 29 11.80 +37 41 09.3 U T08
2018-05-15 07:56:53 C 09 29 13.53 +37 40 50.9 U T08
2018-05-15 08:09:04 C 09 29 15.52 +37 40 30.2 U T08
2018-05-15 08:23:26 C 09 29 17.79 +37 40 05.1 U T08
2018-05-19 04:04:31 C 09 43 10.74 +35 11 12.6 U 703
2018-05-19 04:12:43 C 09 43 11.87 +35 10 58.5 U 703
2018-05-19 04:29:04 C 09 43 14.10 +35 10 33.0 U 703
2018-05-24 05:15:40 C 09 58 52.25 +32 10 18.9 U G96
2018-05-24 05:25:09 C 09 58 53.36 +32 10 05.4 U G96
2018-05-24 05:34:37 C 09 58 54.46 +32 09 51.9 U G96
2018-05-24 05:44:06 C 09 58 55.58 +32 09 38.5 U G96
2018-06-02 07:22:05 C 10 21 55.09 +27 26 00.6 U T05
2018-06-02 07:33:53 C 10 21 56.15 +27 25 46.3 U T05
2018-06-02 07:35:13 C 10 21 56.30 +27 25 44.8 U T05
2018-06-02 07:45:01 C 10 21 57.26 +27 25 33.6 U T05
2018-06-03 04:18:01 C 10 23 52.45 +27 01 08.5 U 703
2018-06-03 04:25:34 C 10 23 53.19 +27 01 01.1 U 703
2018-06-03 04:33:07 C 10 23 53.88 +27 00 52.1 U 703
2018-06-03 04:40:40 C 10 23 54.55 +27 00 43.2 U 703
2018-06-06 06:49:45 C 10 30 33.57 +25 35 50.9 U T05
2018-06-06 07:04:38 C 10 30 34.76 +25 35 35.3 U T05