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
2021-04-13 07:15:43 C 12 15 18.67 +27 14 01.4 V 703
2021-04-13 07:23:16 C 12 15 17.85 +27 13 54.9 V 703
2021-04-13 09:47:55 C 12 15 02.41 +27 11 50.0 U I41
2021-04-13 10:49:36 C 12 14 56.11 +27 11 00.2 V T08
2021-04-13 10:54:14 C 12 14 55.60 +27 10 56.1 V T08
2021-04-13 11:01:53 C 12 14 54.80 +27 10 49.6 V T08
2021-04-13 11:27:05 C 12 14 52.08 +27 10 27.8 V T08
2021-04-13 20:51:52 C 12 13 54.30 +27 02 20.0 V Z43
2021-04-13 21:01:03 C 12 13 53.32 +27 02 12.0 V Z43
2021-04-13 21:09:54 C 12 13 52.40 +27 02 04.7 V Z43
2021-04-13 21:19:05 C 12 13 51.45 +27 01 56.4 V Z43
2021-04-13 23:20:37 C 12 13 38.66 +27 00 13.3 V 160
2021-04-13 23:23:48 C 12 13 38.34 +27 00 10.5 V 160
2021-04-13 23:26:57 C 12 13 38.01 +27 00 07.8 V 160
2021-04-15 09:57:34 C 12 10 14.43 +26 30 42.2 V T05
2021-04-15 10:01:39 C 12 10 14.04 +26 30 38.7 V T05
2021-04-15 10:09:29 C 12 10 13.26 +26 30 32.1 V T05
2021-04-15 10:50:16 C 12 10 09.29 +26 29 57.0 V T05
2021-04-17 05:53:04 C 12 06 16.11 +25 53 22.0 U I41
2021-04-17 06:06:19 C 12 06 14.93 +25 53 10.9 U I41
2021-04-17 06:57:41 C 12 06 10.37 +25 52 27.4 U I41
2021-04-17 07:10:47 C 12 06 09.21 +25 52 16.3 U I41
2021-04-17 09:14:42 C 12 05 58.33 +25 50 30.6 U I41
2021-04-17 10:06:08 C 12 05 54.10 +25 49 50.2 V T08
2021-04-17 10:10:06 C 12 05 53.73 +25 49 46.6 V T08
2021-04-17 10:21:01 C 12 05 52.78 +25 49 37.6 V T08
2021-04-17 11:01:06 C 12 05 49.26 +25 49 03.3 V T08
2021-04-17 20:27:16 C 12 05 02.00 +25 41 01.5 V Z43
2021-04-17 20:36:01 C 12 05 01.29 +25 40 54.3 V Z43
2021-04-17 20:54:05 C 12 04 59.74 +25 40 39.0 V Z43
2021-04-18 06:15:24 C 12 04 13.05 +25 32 49.2 V 703
2021-04-18 06:23:40 C 12 04 12.39 +25 32 41.9 V 703
2021-04-18 06:31:54 C 12 04 11.72 +25 32 35.2 V 703
2021-04-18 06:40:09 C 12 04 11.02 +25 32 28.2 V 703
2021-04-18 06:45:53 C 12 04 10.52 +25 32 23.5 V G96
2021-04-18 06:54:09 C 12 04 09.82 +25 32 16.6 V G96
2021-04-18 07:02:25 C 12 04 09.13 +25 32 09.6 V G96
2021-04-18 07:10:41 C 12 04 08.43 +25 32 02.7 V G96
2021-04-19 03:34:38 C 12 02 31.26 +25 14 55.6 V U71
2021-04-19 03:43:07 C 12 02 30.56 +25 14 49.3 V U71
2021-04-19 03:52:18 C 12 02 29.84 +25 14 41.8 V U71
2021-04-19 07:30:39 C 12 02 12.81 +25 11 41.5 V T05
2021-04-19 07:35:16 C 12 02 12.42 +25 11 37.4 V T05
2021-04-19 07:41:12 C 12 02 11.98 +25 11 32.8 V T05
2021-04-19 07:48:27 C 12 02 11.39 +25 11 26.4 V T05
2021-04-21 04:25:40 C 11 58 54.71 +24 34 25.4 V 703
2021-04-21 04:33:53 C 11 58 54.16 +24 34 18.4 V 703
2021-04-21 04:42:06 C 11 58 53.58 +24 34 11.9 V 703
2021-04-21 04:50:21 C 11 58 52.98 +24 34 05.2 V 703
2021-04-22 20:16:14 C 11 56 15.67 +24 01 49.2 V K87