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
2021-04-04 02:00:27 C 12 44 23.20 +30 20 07.0 V W46
2021-04-04 02:11:43 C 12 44 21.39 +30 19 58.1 V W46
2021-04-04 02:23:24 C 12 44 19.43 +30 19 48.6 V W46
2021-04-04 21:49:46 C 12 41 16.44 +30 04 05.9 V Z43
2021-04-04 21:59:11 C 12 41 14.97 +30 03 58.0 V Z43
2021-04-04 22:08:04 C 12 41 13.58 +30 03 50.9 V Z43
2021-04-04 22:17:02 C 12 41 12.19 +30 03 43.8 V Z43
2021-04-05 10:52:03 C 12 39 16.74 +29 53 33.7 V T08
2021-04-05 10:55:24 C 12 39 16.25 +29 53 31.0 V T08
2021-04-05 10:57:23 C 12 39 15.93 +29 53 29.3 V T08
2021-04-05 11:00:04 C 12 39 15.53 +29 53 27.0 V T08
2021-04-05 11:48:24 C 12 39 08.09 +29 52 47.2 V T08
2021-04-05 11:52:40 C 12 39 07.43 +29 52 43.4 V T08
2021-04-05 12:00:15 C 12 39 06.26 +29 52 37.3 V T08
2021-04-07 21:23:52 C 12 30 54.69 +29 04 48.2 q 160
2021-04-07 21:26:46 C 12 30 54.29 +29 04 45.7 q 160
2021-04-07 21:29:40 C 12 30 53.89 +29 04 43.2 q 160
2021-04-08 07:12:42 C 12 29 35.30 +28 56 33.3 V 703
2021-04-08 07:20:33 C 12 29 34.21 +28 56 26.7 V 703
2021-04-08 07:28:19 C 12 29 33.16 +28 56 20.2 V 703
2021-04-08 07:36:04 C 12 29 32.11 +28 56 13.7 V 703
2021-04-09 06:57:21 C 12 26 29.85 +28 36 24.9 Z U76
2021-04-09 07:15:42 C 12 26 27.47 +28 36 09.5 Z U76
2021-04-09 07:37:05 C 12 26 24.68 +28 35 51.2 Z U76
2021-04-09 10:17:15 C 12 26 04.34 +28 33 37.6 V T08
2021-04-09 10:39:12 C 12 26 01.50 +28 33 18.7 V T08
2021-04-09 10:58:21 C 12 25 59.01 +28 33 02.4 V T08
2021-04-09 11:18:51 C 12 25 56.38 +28 32 44.8 V T08
2021-04-10 06:27:07 C 12 23 34.42 +28 16 23.4 Z U76
2021-04-10 06:45:30 C 12 23 32.08 +28 16 07.8 Z U76
2021-04-10 07:06:54 C 12 23 29.42 +28 15 49.1 Z U76
2021-04-11 21:21:05 C 12 19 00.92 +27 43 02.7 V Z43
2021-04-11 21:30:04 C 12 18 59.89 +27 42 55.2 V Z43
2021-04-11 21:39:03 C 12 18 58.84 +27 42 47.6 V Z43
2021-04-11 21:48:06 C 12 18 57.81 +27 42 39.9 V Z43
2021-04-12 04:10:05 C 12 18 15.18 +27 37 13.9 Z U76
2021-04-12 04:34:33 C 12 18 12.42 +27 36 53.0 Z U76
2021-04-12 05:00:31 C 12 18 09.53 +27 36 31.4 Z U76
2021-04-12 06:15:09 C 12 18 01.15 +27 35 26.5 V U52
2021-04-12 06:37:51 C 12 17 58.52 +27 35 06.9 V U52
2021-04-12 07:00:34 C 12 17 55.95 +27 34 47.5 V U52
2021-04-13 04:14:17 C 12 15 38.36 +27 16 36.4 U I41
2021-04-13 04:41:45 C 12 15 35.39 +27 16 13.1 U I41
2021-04-13 04:43:06 C 12 15 35.25 +27 16 12.0 U I41
2021-04-13 06:04:26 C 12 15 26.44 +27 15 02.6 U I41
2021-04-13 06:04:30 C 12 15 26.48 +27 15 01.5 V U52
2021-04-13 06:26:39 C 12 15 24.08 +27 14 42.2 V U52
2021-04-13 06:48:48 C 12 15 21.70 +27 14 23.3 V U52
2021-04-13 07:00:37 C 12 15 20.29 +27 14 14.4 V 703
2021-04-13 07:08:10 C 12 15 19.49 +27 14 08.3 V 703