144411 (2004 EW9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5339217436 ± 4.33e-10
Semi-major axis (a)1.9171752718 AU ± 1.10e-10
Inclination (i)8.79432051° ± 5.76e-07
Long. of Asc. Node (Ω)288.78678844° ± 2.63e-06
Arg. of Perihelion (ω)8.18075153° ± 2.93e-06
Mean Anomaly (M)8.37493834° ± 1.68e-07
Mean Motion (n)0.3712953823°/day ± 3.19e-11
Perihelion dist (q)0.89355371 AU ± 8.31e-10
Aphelion dist (Q)2.94079684 AU ± 8.47e-10
Orbital Period2.65456111 yr ± 2.28e-10
Physical Parameters
H (abs. magnitude)16.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.235″
Uncertainty0
Orbit TypeApollo
MOID0.091125 AU
Observations Used2438
Radar Obs Used8
Oppositions12
Arc Total2001-2020
First Observation Used2001-03-14
Last Observation Used2025-03-25
Observations (2564)
Date Type RA Dec Mag Band Observatory
2004-09-16 07:25:27 C 23 00 57.51 +64 49 54.8 c 918
2004-09-16 07:36:08 C 23 00 59.62 +64 49 17.2 c 918
2004-09-16 07:47:49 C 23 01 01.93 +64 48 35.9 c 918
2004-09-16 07:59:04 C 23 01 04.18 +64 47 56.1 c 918
2004-09-16 08:09:25 C 23 01 06.29 +64 47 18.3 c 918
2004-09-16 08:32:09 C 23 01 10.79 +64 45 58.1 c 918
2004-09-16 08:42:59 C 23 01 12.95 +64 45 20.0 c 918
2004-09-16 08:54:15 C 23 01 15.21 +64 44 40.0 c 918
2004-09-16 09:05:32 C 23 01 17.49 +64 43 59.5 c 918
2004-09-16 09:16:12 C 23 01 19.65 +64 43 21.6 c 918
2004-09-16 09:27:31 C 23 01 21.95 +64 42 41.0 c 918
2004-09-16 09:38:12 C 23 01 24.12 +64 42 02.8 c 918
2004-09-16 09:49:27 C 23 01 26.41 +64 41 22.3 c 918
2004-09-16 10:12:05 C 23 01 31.08 +64 40 01.2 c 918
2004-09-16 10:22:47 C 23 01 33.17 +64 39 23.9 c 918
2004-09-16 10:33:59 C 23 01 35.50 +64 38 41.0 c 918
2004-09-16 11:01:33 C 23 01 41.41 +64 37 03.0 c 918
2004-09-16 18:25:43 C 23 03 25.24 +64 11 34.7 o 240
2004-09-16 18:26:47 C 23 03 25.47 +64 11 31.4 o 240
2004-09-16 18:27:51 C 23 03 25.66 +64 11 27.8 o 240
2004-09-16 18:28:54 C 23 03 25.88 +64 11 24.3 o 240
2004-09-16 18:29:58 C 23 03 26.09 +64 11 20.8 o 240
2004-09-16 18:31:02 C 23 03 26.30 +64 11 17.3 o 240
2004-09-16 18:32:06 C 23 03 26.53 +64 11 13.7 o 240
2004-09-16 18:34:13 C 23 03 26.94 +64 11 06.6 o 240
2004-09-16 18:35:17 C 23 03 27.15 +64 11 03.1 o 240
2004-09-16 18:36:20 C 23 03 27.37 +64 10 59.6 o 240
2004-09-16 18:46:31 C 23 03 28.94 +64 10 29.2 d 118
2004-09-16 19:01:54 C 23 03 31.94 +64 09 38.2 d 118
2004-09-16 19:18:52 C 23 03 35.15 +64 08 41.6 d 118
2004-09-16 19:19:03 C 23 03 35.78 +64 08 38.5 o 151
2004-09-16 19:19:44 C 23 03 35.89 +64 08 35.9 o 151
2004-09-16 19:21:57 C 23 03 36.30 +64 08 28.8 o 151
2004-09-16 19:22:45 C 23 03 36.47 +64 08 26.1 o 151
2004-09-16 19:23:13 C 23 03 36.56 +64 08 24.6 o 151
2004-09-16 19:23:39 C 23 03 36.64 +64 08 23.0 o 151
2004-09-16 19:24:11 C 23 03 36.75 +64 08 21.3 o 151
2004-09-16 19:24:43 C 23 03 36.83 +64 08 19.6 o 151
2004-09-16 19:25:14 C 23 03 36.94 +64 08 17.9 o 151
2004-09-16 19:25:50 C 23 03 37.06 +64 08 16.0 o 151
2004-09-16 19:36:02 C 23 03 38.40 +64 07 44.3 d 118
2004-09-16 19:53:04 C 23 03 41.57 +64 06 47.5 d 118
2004-09-17 06:12:47 C 23 05 41.11 +63 31 54.6 c H41
2004-09-17 06:17:19 C 23 05 41.84 +63 31 39.0 c H41
2004-09-17 06:18:42 C 23 05 42.05 +63 31 34.3 c H41
2004-09-17 06:19:47 C 23 05 42.26 +63 31 30.6 c H41
2004-09-17 06:21:26 C 23 05 42.51 +63 31 25.0 c H41
2004-09-17 06:23:23 C 23 05 42.84 +63 31 18.3 c H41
2004-09-17 18:42:22 C 23 08 05.47 +62 49 40.7 d 118
2004-09-17 18:45:49 C 23 08 06.07 +62 49 29.5 d 118
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2012-07-11 16:45:00 57252.5688 0.04 Hz 2380 -1 -1
2012-07-12 18:51:00 123271564.2 0.5 us 2380 -1 -1
2012-07-15 17:30:00 120183628 3 us 8560 -14 -14
2012-07-20 16:20:00 122765707.19 1 us 2380 -1 -1
2020-06-21 14:38:00 121746239 5 us 2380 -1 -1
2020-06-23 14:44:00 131938814.32 5 us 2380 -1 -1
2020-06-24 14:47:00 137365693.2 5 us 2380 -1 -1
2020-06-27 14:26:00 154599961.39 1 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)