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
2004-09-22 19:37:28 C 23 24 19.16 +56 37 34.4 o 160
2004-09-22 19:37:48 C 23 24 19.17 +56 37 33.8 o 160
2004-09-22 19:38:09 C 23 24 19.19 +56 37 32.4 o 160
2004-09-23 02:30:59 C 23 24 59.31 +56 18 08.8 z 294
2004-09-23 02:49:10 C 23 25 00.51 +56 17 16.9 z 294
2004-09-23 19:38:38 C 23 26 37.51 +55 30 04.8 c J92
2004-09-23 19:40:36 C 23 26 37.65 +55 29 59.6 c J92
2004-09-23 19:42:30 C 23 26 37.81 +55 29 54.4 c J92
2004-09-23 19:44:24 C 23 26 37.98 +55 29 49.3 c J92
2004-09-23 19:46:18 C 23 26 38.13 +55 29 44.2 c J92
2004-09-23 19:47:41 C 23 26 38.31 +55 29 39.6 o J94
2004-09-23 19:50:06 C 23 26 38.45 +55 29 34.1 c J92
2004-09-23 19:53:55 C 23 26 38.78 +55 29 23.9 c J92
2004-09-23 19:55:49 C 23 26 38.93 +55 29 18.7 c J92
2004-09-23 19:57:30 C 23 26 39.16 +55 29 13.4 o J94
2004-09-23 19:57:43 C 23 26 39.08 +55 29 13.6 c J92
2004-09-23 19:59:37 C 23 26 39.23 +55 29 08.4 c J92
2004-09-23 20:07:48 C 23 26 39.91 +55 28 46.4 c J92
2004-09-23 20:09:43 C 23 26 40.07 +55 28 41.3 c J92
2004-09-23 20:10:30 C 23 26 40.23 +55 28 38.2 o J94
2004-09-23 20:11:38 C 23 26 40.24 +55 28 36.1 c J92
2004-09-23 20:13:33 C 23 26 40.40 +55 28 30.9 c J92
2004-09-23 20:30:50 C 23 26 41.79 +55 27 44.4 c J92
2004-09-23 20:32:47 C 23 26 41.96 +55 27 39.1 c J92
2004-09-23 20:34:42 C 23 26 42.13 +55 27 33.9 c J92
2004-09-23 20:36:50 C 23 26 42.29 +55 27 28.2 c J92
2004-09-23 20:38:36 C 23 26 42.43 +55 27 23.4 c J92
2004-09-23 20:40:33 C 23 26 42.59 +55 27 18.1 c J92
2004-09-23 20:42:30 C 23 26 42.75 +55 27 12.9 c J92
2004-09-23 20:44:26 C 23 26 42.90 +55 27 07.7 c J92
2004-09-24 19:57:46 C 23 28 45.01 +54 23 54.0 c J92
2004-09-24 19:59:39 C 23 28 45.13 +54 23 49.1 c J92
2004-09-24 20:01:33 C 23 28 45.27 +54 23 44.2 c J92
2004-09-24 20:03:27 C 23 28 45.40 +54 23 39.4 c J92
2004-09-24 20:05:20 C 23 28 45.55 +54 23 34.4 c J92
2004-09-24 20:07:14 C 23 28 45.69 +54 23 29.4 c J92
2004-09-24 20:09:06 C 23 28 45.84 +54 23 24.5 c J92
2004-09-24 20:11:00 C 23 28 45.97 +54 23 19.6 c J92
2004-09-24 20:12:55 C 23 28 46.12 +54 23 14.4 c J92
2004-09-24 20:14:49 C 23 28 46.28 +54 23 09.5 c J92
2004-09-24 20:16:42 C 23 28 46.40 +54 23 04.4 c J92
2004-09-24 20:18:36 C 23 28 46.53 +54 22 59.6 c J92
2004-09-24 20:20:30 C 23 28 46.66 +54 22 54.6 c J92
2004-09-24 20:22:24 C 23 28 46.81 +54 22 49.5 c J92
2004-09-24 20:24:19 C 23 28 46.94 +54 22 44.8 c J92
2004-09-24 20:26:13 C 23 28 47.12 +54 22 39.5 c J92
2004-09-24 20:28:07 C 23 28 47.26 +54 22 34.5 c J92
2004-09-24 20:46:59 C 23 28 48.65 +54 21 45.0 c J92
2004-09-24 20:48:53 C 23 28 48.78 +54 21 40.2 c J92
2004-09-24 22:27:44 C 23 28 54.53 +54 17 12.7 o 084
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)