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
2010-01-31 02:31:42 S 14 50 30.737 -04 42 31.57 L C51
2010-01-31 04:06:52 S 14 50 30.684 -04 42 33.30 L C51
2010-01-31 05:42:13 S 14 50 30.629 -04 42 34.70 L C51
2010-01-31 07:17:34 S 14 50 30.576 -04 42 35.21 L C51
2010-01-31 10:28:05 S 14 50 30.463 -04 42 38.09 L C51
2010-01-31 13:38:36 S 14 50 30.286 -04 42 39.96 L C51
2010-02-14 11:58:10 C 14 46 56.85 -04 31 55.2 r 703
2010-02-14 12:09:05 C 14 46 56.60 -04 31 54.4 r 703
2010-02-14 12:19:58 C 14 46 56.42 -04 31 53.7 r 703
2010-02-14 12:31:01 C 14 46 56.02 -04 31 54.0 r 703
2010-02-26 14:07:35 C 14 38 12.779 -04 00 15.00 L F51
2010-02-26 14:21:06 C 14 38 12.221 -04 00 13.21 L F51
2010-03-17 09:29:25 C 14 14 09.83 -02 36 34.0 19.8 c 704
2010-03-17 09:45:35 C 14 14 08.76 -02 36 30.1 20.0 c 704
2010-03-17 10:01:44 C 14 14 07.66 -02 36 26.1 19.8 c 704
2010-03-21 11:02:24 C 14 07 33.13 -02 14 52.3 r 703
2010-03-21 11:09:50 C 14 07 32.52 -02 14 49.2 r 703
2010-03-21 11:17:24 C 14 07 32.12 -02 14 48.0 r 703
2010-03-21 11:24:58 C 14 07 31.51 -02 14 46.0 r 703
2010-03-25 00:04:12 C 14 01 30.39 -01 55 34.5 19.4 u C20
2010-03-25 00:06:18 C 14 01 30.22 -01 55 33.6 20.1 u C20
2010-04-04 08:19:27 C 13 42 57.78 -01 00 01.0 r 703
2010-04-04 08:29:28 C 13 42 57.06 -00 59 59.9 r 703
2010-04-04 08:39:26 C 13 42 56.37 -00 59 58.6 r 703
2010-04-04 08:49:34 C 13 42 55.54 -00 59 54.4 r 703
2010-04-07 22:39:23 C 13 36 26.11 -00 41 57.2 r J75
2010-04-07 22:57:56 C 13 36 24.72 -00 41 53.5 r J75
2010-04-07 23:16:28 C 13 36 23.32 -00 41 50.8 r J75
2010-04-15 07:10:16 C 13 23 23.96 -00 08 50.9 19.1 c 704
2010-04-15 07:26:30 C 13 23 22.74 -00 08 48.2 19.6 c 704
2010-04-15 07:42:43 C 13 23 21.56 -00 08 44.5 19.8 c 704
2010-04-15 07:58:54 C 13 23 20.35 -00 08 42.5 19.7 c 704
2010-04-15 08:15:12 C 13 23 19.15 -00 08 39.8 19.6 c 704
2010-04-15 21:36:15 C 13 22 21.99 -00 06 26.2 u A13
2010-04-15 22:03:57 C 13 22 20.04 -00 06 21.6 u A13
2010-05-20 04:06:12 C 12 39 25.95 +00 43 22.2 r G96
2010-05-20 04:16:25 C 12 39 25.63 +00 43 21.6 r G96
2010-05-20 04:26:45 C 12 39 25.30 +00 43 21.3 r G96
2010-05-20 04:37:01 C 12 39 25.02 +00 43 20.4 r G96
2012-03-12 09:25:56 C 18 14 21.42 -45 16 38.3 o 807
2012-03-12 09:34:35 C 18 14 22.19 -45 16 43.5 o 807
2012-03-12 09:43:12 C 18 14 22.91 -45 16 47.9 o 807
2012-03-12 09:51:14 C 18 14 23.62 -45 16 51.7 o 807
2013-02-20 10:03:54 C 14 42 47.65 -10 00 19.6 u H21
2013-02-20 10:09:52 C 14 42 47.54 -10 00 18.8 u H21
2013-02-20 10:16:27 C 14 42 47.35 -10 00 16.5 u H21
2013-04-08 08:43:23 C 13 51 29.59 -07 41 27.0 u G96
2013-04-08 08:51:50 C 13 51 29.05 -07 41 25.4 u G96
2013-04-08 09:00:08 C 13 51 28.54 -07 41 23.8 u G96
2013-04-08 09:08:33 C 13 51 28.00 -07 41 22.2 u G96