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
2021-02-22 15:44:46 C 16 36 30.33 +27 18 00.8 V T05
2021-02-23 10:11:44 C 16 32 27.85 +27 40 55.7 V 703
2021-02-23 10:27:24 C 16 32 24.32 +27 41 15.4 V 703
2021-02-23 10:35:14 C 16 32 22.58 +27 41 25.4 V 703
2021-02-23 10:46:43 C 16 32 19.96 +27 41 39.7 V 703
2021-02-23 10:54:38 C 16 32 18.19 +27 41 49.9 V 703
2021-02-23 11:02:34 C 16 32 16.40 +27 42 00.0 V 703
2021-02-24 11:37:02 C 16 26 46.36 +28 12 04.7 V 703
2021-02-24 11:44:42 C 16 26 44.55 +28 12 13.5 V 703
2021-02-24 11:52:23 C 16 26 42.80 +28 12 23.1 V 703
2021-02-24 12:00:04 C 16 26 41.04 +28 12 33.1 V 703
2021-02-24 12:59:03 C 16 26 28.19 +28 13 45.0 V T08
2021-02-24 13:03:41 C 16 26 27.12 +28 13 50.6 V T08
2021-02-24 13:13:01 C 16 26 24.98 +28 14 02.0 V T08
2021-02-24 13:30:19 C 16 26 21.01 +28 14 23.4 V T08
2021-02-26 10:17:34 C 16 16 00.66 +29 07 06.2 V 703
2021-02-26 10:25:05 C 16 15 58.89 +29 07 17.0 V 703
2021-02-26 10:32:35 C 16 15 57.12 +29 07 25.5 V 703
2021-02-26 10:40:06 C 16 15 55.33 +29 07 34.3 V 703
2021-03-03 11:03:52 C 15 46 16.01 +31 13 36.5 V 703
2021-03-03 11:11:31 C 15 46 14.08 +31 13 44.0 V 703
2021-03-03 11:19:09 C 15 46 12.11 +31 13 50.6 V 703
2021-03-03 11:26:47 C 15 46 10.09 +31 13 57.8 V 703
2021-03-04 14:05:13 C 15 39 16.59 +31 37 58.5 V T08
2021-03-04 14:11:16 C 15 39 14.98 +31 38 03.8 V T08
2021-03-04 14:33:38 C 15 39 09.03 +31 38 23.5 V T08
2021-03-04 14:37:38 C 15 39 07.98 +31 38 26.8 V T08
2021-03-07 10:51:46 C 15 21 02.34 +32 31 46.9 V 703
2021-03-07 10:59:17 C 15 21 00.28 +32 31 52.1 V 703
2021-03-07 11:06:49 C 15 20 58.22 +32 31 57.4 V 703
2021-03-07 11:14:21 C 15 20 56.17 +32 32 02.6 V 703
2021-03-08 00:07:54 C 15 17 27.99 +32 40 39.9 V L54
2021-03-08 00:43:32 C 15 17 18.25 +32 41 03.8 V L54
2021-03-08 01:19:46 C 15 17 08.31 +32 41 27.8 V L54
2021-03-10 10:08:06 C 15 01 40.53 +33 14 00.2 V G96
2021-03-10 10:15:38 C 15 01 38.43 +33 14 03.9 V G96
2021-03-10 10:23:10 C 15 01 36.30 +33 14 07.6 V G96
2021-03-10 10:30:42 C 15 01 34.24 +33 14 11.3 V G96
2021-03-17 19:25:22 C 14 13 37.49 +33 52 08.0 o C94
2021-03-17 19:26:04 C 14 13 37.43 +33 52 09.0 o C94
2021-03-17 19:26:48 C 14 13 37.04 +33 52 09.1 o C94
2021-03-18 07:17:54 C 14 10 31.20 +33 51 20.3 U I41
2021-03-18 07:19:14 C 14 10 30.84 +33 51 20.2 U I41
2021-03-18 08:55:08 C 14 10 05.46 +33 51 12.9 U I41
2021-03-18 08:56:29 C 14 10 05.10 +33 51 12.7 U I41
2021-03-18 09:42:01 C 14 09 52.80 +33 51 07.7 V 703
2021-03-18 09:49:33 C 14 09 50.92 +33 51 08.1 V 703
2021-03-18 09:57:04 C 14 09 48.95 +33 51 07.6 V 703
2021-03-18 10:04:36 C 14 09 46.94 +33 51 06.8 V 703
2021-03-18 12:28:06 C 14 09 09.72 +33 50 55.2 V T05