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
2004-09-18 20:14:16 C 23 12 21.37 +61 26 15.6 o 240
2004-09-18 20:15:20 C 23 12 21.52 +61 26 12.2 o 240
2004-09-18 20:16:23 C 23 12 21.66 +61 26 08.8 o 240
2004-09-18 20:18:31 C 23 12 21.96 +61 26 02.1 o 240
2004-09-18 20:19:35 C 23 12 22.11 +61 25 58.8 o 240
2004-09-18 20:21:42 C 23 12 22.42 +61 25 52.1 o 240
2004-09-18 20:22:47 C 23 12 22.58 +61 25 48.9 o 240
2004-09-18 20:24:55 C 23 12 22.88 +61 25 42.1 o 240
2004-09-18 20:25:58 C 23 12 23.02 +61 25 38.8 o 240
2004-09-18 21:34:01 C 23 12 32.47 +61 22 07.7 o 160
2004-09-18 21:34:55 C 23 12 32.59 +61 22 04.6 o 160
2004-09-18 21:35:46 C 23 12 32.71 +61 22 02.0 o 160
2004-09-18 21:36:12 C 23 12 32.74 +61 22 00.4 o 160
2004-09-18 21:36:38 C 23 12 32.84 +61 21 59.2 o 160
2004-09-18 21:37:06 C 23 12 32.87 +61 21 57.9 o 160
2004-09-18 21:38:26 C 23 12 33.03 +61 21 53.7 o 160
2004-09-18 21:38:50 C 23 12 33.13 +61 21 52.1 o 160
2004-09-18 21:39:16 C 23 12 33.17 +61 21 50.7 o 160
2004-09-18 21:39:41 C 23 12 33.27 +61 21 49.3 o 160
2004-09-18 21:41:06 C 23 12 33.37 +61 21 45.3 o 160
2004-09-18 21:41:30 C 23 12 33.50 +61 21 43.5 o 160
2004-09-18 21:41:57 C 23 12 33.54 +61 21 42.5 o 160
2004-09-18 23:10:08 C 23 12 45.49 +61 16 56.1 c 215
2004-09-18 23:10:43 C 23 12 45.53 +61 16 54.9 c 215
2004-09-18 23:11:06 C 23 12 45.59 +61 16 53.6 c 215
2004-09-19 07:03:41 C 23 13 55.60 +60 51 54.4 c H41
2004-09-19 07:04:48 C 23 13 55.74 +60 51 50.8 c H41
2004-09-19 07:06:01 C 23 13 55.87 +60 51 46.9 c H41
2004-09-19 07:07:06 C 23 13 56.03 +60 51 43.4 c H41
2004-09-19 07:08:08 C 23 13 56.16 +60 51 40.1 c H41
2004-09-19 18:11:15 C 23 15 35.96 +60 16 29.5 o 084
2004-09-19 19:57:47 C 23 15 51.29 +60 11 03.6 c 163
2004-09-19 19:58:37 C 23 15 51.41 +60 11 01.0 c 163
2004-09-19 19:59:31 C 23 15 51.47 +60 10 58.6 c 163
2004-09-19 20:00:12 C 23 15 51.63 +60 10 56.4 c 163
2004-09-19 20:00:45 C 23 15 51.65 +60 10 54.6 c 163
2004-09-20 00:41:25 C 23 16 31.25 +59 56 20.7 o 928
2004-09-20 00:46:40 C 23 16 31.87 +59 56 05.3 o 928
2004-09-20 00:57:17 C 23 16 33.18 +59 55 33.1 o 928
2004-09-20 04:08:05 C 23 16 58.87 +59 45 50.9 d G72
2004-09-20 04:09:44 C 23 16 59.07 +59 45 46.3 d G72
2004-09-20 04:11:21 C 23 16 59.26 +59 45 41.5 d G72
2004-09-20 04:12:57 C 23 16 59.45 +59 45 36.6 d G72
2004-09-20 04:14:34 C 23 16 59.64 +59 45 31.8 d G72
2004-09-20 04:16:13 C 23 16 59.83 +59 45 27.0 d G72
2004-09-20 04:17:49 C 23 17 00.02 +59 45 22.2 d G72
2004-09-20 04:19:26 C 23 17 00.22 +59 45 17.3 d G72
2004-09-20 04:21:05 C 23 17 00.40 +59 45 12.4 d G72
2004-09-20 04:22:42 C 23 17 00.60 +59 45 07.5 d G72
2004-09-20 04:24:18 C 23 17 00.78 +59 45 03.0 d G72
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)