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
2021-03-29 23:19:39 C 13 06 01.21 +31 51 58.8 V K87
2021-03-30 11:31:33 C 13 03 40.54 +31 43 37.6 V T05
2021-03-30 11:36:15 C 13 03 39.63 +31 43 34.4 V T05
2021-03-30 12:22:06 C 13 03 30.76 +31 43 01.9 V T05
2021-03-30 13:03:45 C 13 03 22.69 +31 42 32.3 V T05
2021-03-30 13:36:21 C 13 03 16.410 +31 42 08.82 U F51
2021-03-30 13:50:18 C 13 03 13.726 +31 41 58.83 U F51
2021-03-30 14:04:17 C 13 03 11.046 +31 41 48.74 U F51
2021-03-30 14:18:13 C 13 03 08.367 +31 41 38.64 U F51
2021-03-30 19:45:40 C 13 02 07.80 +31 37 41.3 V K74
2021-03-30 19:46:21 C 13 02 07.67 +31 37 41.0 V K74
2021-03-30 19:48:50 C 13 02 07.20 +31 37 39.3 V K74
2021-03-30 19:51:54 C 13 02 06.64 +31 37 37.2 V K74
2021-03-30 19:54:21 C 13 02 06.18 +31 37 35.5 V K74
2021-03-30 21:33:42 C 13 01 47.46 +31 36 25.8 V Z43
2021-03-30 21:42:03 C 13 01 45.87 +31 36 20.2 V Z43
2021-03-30 21:51:08 C 13 01 44.17 +31 36 13.6 V Z43
2021-03-30 22:00:05 C 13 01 42.44 +31 36 07.3 V Z43
2021-03-31 00:03:28 C 13 01 18.96 +31 34 41.0 V 160
2021-03-31 00:07:37 C 13 01 18.18 +31 34 38.0 V 160
2021-03-31 00:11:46 C 13 01 17.40 +31 34 35.8 V 160
2021-03-31 08:06:57 C 12 59 49.35 +31 28 55.6 U I41
2021-03-31 08:07:37 C 12 59 49.22 +31 28 55.1 U I41
2021-03-31 08:53:53 C 12 59 40.55 +31 28 21.5 U I41
2021-03-31 08:54:34 C 12 59 40.43 +31 28 20.9 U I41
2021-03-31 09:23:23 C 12 59 34.94 +31 28 00.2 V 703
2021-03-31 09:30:28 C 12 59 33.62 +31 27 54.6 V 703
2021-03-31 09:37:32 C 12 59 32.29 +31 27 49.4 V 703
2021-03-31 09:44:37 C 12 59 30.97 +31 27 44.6 V 703
2021-04-01 07:54:21 C 12 55 30.90 +31 11 25.4 V G96
2021-04-01 08:01:58 C 12 55 29.52 +31 11 19.7 V G96
2021-04-01 08:09:32 C 12 55 28.15 +31 11 14.0 V G96
2021-04-01 08:17:06 C 12 55 26.78 +31 11 08.4 V G96
2021-04-01 11:05:12 C 12 54 57.02 +31 09 05.1 V T08
2021-04-01 11:56:32 C 12 54 47.77 +31 08 26.2 V T08
2021-04-01 12:06:27 C 12 54 45.98 +31 08 18.6 V T08
2021-04-01 12:24:38 C 12 54 42.71 +31 08 04.8 V T08
2021-04-02 04:43:03 C 12 51 52.96 +30 55 38.0 V V93
2021-04-02 05:35:26 C 12 51 43.82 +30 54 58.0 V V93
2021-04-02 06:54:47 C 12 51 29.97 +30 53 57.0 V V93
2021-04-03 07:54:31 C 12 47 18.30 +30 34 30.9 V 703
2021-04-03 08:02:03 C 12 47 17.05 +30 34 25.0 V 703
2021-04-03 08:09:34 C 12 47 15.75 +30 34 19.9 V 703
2021-04-03 08:17:06 C 12 47 14.51 +30 34 13.1 V 703
2021-04-03 09:19:54 C 12 47 04.62 +30 33 25.7 V T05
2021-04-03 09:24:17 C 12 47 03.90 +30 33 22.5 V T05
2021-04-03 09:28:14 C 12 47 03.25 +30 33 19.4 V T05
2021-04-03 09:32:51 C 12 47 02.46 +30 33 15.7 V T05
2021-04-03 09:40:45 C 12 47 01.13 +30 33 09.5 V T05
2021-04-03 09:50:10 C 12 46 59.57 +30 33 02.1 V T05