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
2004-09-20 21:33:15 C 23 19 10.20 +58 52 43.4 o 160
2004-09-20 21:33:35 C 23 19 10.28 +58 52 42.2 o 160
2004-09-21 03:40:56 C 23 19 54.32 +58 34 20.9 z 294
2004-09-21 04:01:49 C 23 19 56.40 +58 33 19.0 z 294
2004-09-21 04:24:47 C 23 19 58.74 +58 32 10.0 z 294
2004-09-21 05:41:34 C 23 20 08.82 +58 28 25.7 14.8 o H06
2004-09-21 05:44:06 C 23 20 09.06 +58 28 18.4 14.8 o H06
2004-09-21 05:46:32 C 23 20 09.30 +58 28 11.2 14.8 o H06
2004-09-21 05:50:09 C 23 20 09.64 +58 28 00.5 14.8 o H06
2004-09-21 06:38:10 C 23 20 13.42 +58 25 34.2 c H41
2004-09-21 06:39:11 C 23 20 13.51 +58 25 31.1 c H41
2004-09-21 06:40:17 C 23 20 13.62 +58 25 27.9 c H41
2004-09-21 06:41:15 C 23 20 13.73 +58 25 25.0 c H41
2004-09-21 06:42:13 C 23 20 13.81 +58 25 22.2 c H41
2004-09-21 06:43:17 C 23 20 13.90 +58 25 18.9 c H41
2004-09-21 06:44:22 C 23 20 14.01 +58 25 15.5 c H41
2004-09-21 19:31:11 C 23 21 46.09 +57 47 13.0 c A30
2004-09-21 19:34:55 C 23 21 46.43 +57 47 01.7 c A30
2004-09-21 19:38:03 C 23 21 46.77 +57 46 53.2 c A30
2004-09-21 19:42:27 C 23 21 47.20 +57 46 40.3 c A30
2004-09-21 20:30:08 C 23 21 53.09 +57 44 21.6 c 938
2004-09-21 20:30:59 C 23 21 53.24 +57 44 18.9 c 938
2004-09-21 20:31:50 C 23 21 53.29 +57 44 16.7 c 938
2004-09-21 20:34:48 C 23 21 53.59 +57 44 08.5 c 938
2004-09-21 20:35:38 C 23 21 53.68 +57 44 06.0 c 938
2004-09-21 20:36:29 C 23 21 53.79 +57 44 03.5 c 938
2004-09-21 21:43:26 C 23 22 00.23 +57 40 53.1 c 938
2004-09-21 21:45:27 C 23 22 00.41 +57 40 47.2 c 938
2004-09-21 21:47:28 C 23 22 00.60 +57 40 41.3 c 938
2004-09-22 02:53:39 C 23 22 33.26 +57 25 49.7 z 294
2004-09-22 03:04:16 C 23 22 34.10 +57 25 19.4 z 294
2004-09-22 06:26:15 C 23 22 53.62 +57 15 38.1 c H41
2004-09-22 06:27:10 C 23 22 53.68 +57 15 35.2 c H41
2004-09-22 06:28:41 C 23 22 53.85 +57 15 30.9 c H41
2004-09-22 06:29:51 C 23 22 53.94 +57 15 27.5 c H41
2004-09-22 06:30:54 C 23 22 54.03 +57 15 24.3 c H41
2004-09-22 06:31:59 C 23 22 54.12 +57 15 21.3 c H41
2004-09-22 11:23:43 C 23 23 28.83 +57 01 13.9 o 379
2004-09-22 11:25:22 C 23 23 28.98 +57 01 09.3 o 379
2004-09-22 11:27:02 C 23 23 29.09 +57 01 04.8 o 379
2004-09-22 11:30:20 C 23 23 29.44 +57 00 54.9 o 379
2004-09-22 11:33:38 C 23 23 29.68 +57 00 46.1 o 379
2004-09-22 11:38:35 C 23 23 30.12 +57 00 32.4 o 379
2004-09-22 19:35:03 C 23 24 18.93 +56 37 41.1 o 160
2004-09-22 19:35:24 C 23 24 18.94 +56 37 40.1 o 160
2004-09-22 19:35:45 C 23 24 18.97 +56 37 39.0 o 160
2004-09-22 19:36:05 C 23 24 18.99 +56 37 37.8 o 160
2004-09-22 19:36:26 C 23 24 19.05 +56 37 37.2 o 160
2004-09-22 19:36:46 C 23 24 19.05 +56 37 36.0 o 160
2004-09-22 19:37:07 C 23 24 19.10 +56 37 35.2 o 160
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)