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
2004-10-06 05:14:42 C 23 44 35.23 +43 53 22.6 r H41
2004-10-06 05:16:24 C 23 44 35.30 +43 53 19.2 r H41
2004-10-06 05:17:26 C 23 44 35.35 +43 53 16.9 r H41
2004-10-06 05:18:36 C 23 44 35.38 +43 53 14.4 r H41
2004-10-06 12:14:12 C 23 44 54.17 +43 39 30.1 o 379
2004-10-06 12:15:52 C 23 44 54.20 +43 39 26.7 o 379
2004-10-06 12:22:27 C 23 44 54.41 +43 39 13.7 o 379
2004-10-06 12:24:07 C 23 44 54.44 +43 39 10.5 o 379
2004-10-06 12:25:45 C 23 44 54.53 +43 39 07.2 o 379
2004-10-06 12:29:04 C 23 44 54.62 +43 39 01.0 o 379
2004-10-06 17:51:05 C 23 45 09.15 +43 28 13.7 r 118
2004-10-06 18:05:30 C 23 45 09.68 +43 27 46.0 r 118
2004-10-06 19:47:42 C 23 45 13.35 +43 24 29.4 r 118
2004-10-06 19:54:31 C 23 45 13.59 +43 24 16.2 r 118
2004-10-07 11:24:26 C 23 45 52.75 +42 54 13.2 m 379
2004-10-07 11:26:06 C 23 45 52.82 +42 54 10.0 m 379
2004-10-07 11:31:03 C 23 45 52.94 +42 54 00.9 m 379
2004-10-07 11:32:41 C 23 45 52.97 +42 53 57.8 m 379
2004-10-07 11:39:17 C 23 45 53.24 +42 53 44.9 m 379
2004-10-07 11:40:56 C 23 45 53.30 +42 53 42.1 m 379
2004-10-07 11:42:36 C 23 45 53.34 +42 53 39.1 m 379
2004-10-07 11:44:14 C 23 45 53.40 +42 53 35.6 m 379
2004-10-07 18:52:24 C 23 46 11.39 +42 39 39.9 c J92
2004-10-07 18:52:56 C 23 46 11.42 +42 39 38.9 c J92
2004-10-07 18:53:28 C 23 46 11.42 +42 39 37.9 c J92
2004-10-07 18:54:01 C 23 46 11.45 +42 39 36.9 c J92
2004-10-07 18:54:33 C 23 46 11.46 +42 39 35.8 c J92
2004-10-07 18:55:07 C 23 46 11.48 +42 39 34.8 c J92
2004-10-07 18:55:40 C 23 46 11.50 +42 39 33.9 c J92
2004-10-07 18:56:12 C 23 46 11.53 +42 39 32.7 c J92
2004-10-07 18:56:45 C 23 46 11.56 +42 39 31.8 c J92
2004-10-07 18:57:16 C 23 46 11.56 +42 39 30.8 c J92
2004-10-07 18:57:49 C 23 46 11.60 +42 39 29.8 c J92
2004-10-07 18:58:21 C 23 46 11.61 +42 39 28.6 c J92
2004-10-07 18:58:54 C 23 46 11.62 +42 39 27.5 c J92
2004-10-07 19:03:14 C 23 46 11.79 +42 39 19.6 c J92
2004-10-07 21:14:48 C 23 46 15.53 +42 35 09.2 o 084
2004-10-09 19:13:07 C 23 48 06.72 +41 09 19.8 r 557
2004-10-09 19:16:18 C 23 48 06.82 +41 09 14.2 r 557
2004-10-09 19:19:29 C 23 48 06.94 +41 09 08.5 r 557
2004-10-09 19:22:41 C 23 48 07.04 +41 09 02.7 r 557
2004-10-10 18:07:13 C 23 49 00.22 +40 27 58.5 r 557
2004-10-10 18:46:17 C 23 49 01.53 +40 26 50.3 r 557
2004-10-10 20:23:15 C 23 49 04.67 +40 23 59.9 r 557
2004-10-10 20:52:49 C 23 49 05.61 +40 23 07.6 r 557
2004-10-10 21:22:43 C 23 49 06.55 +40 22 14.5 r 557
2004-10-10 22:09:14 C 23 49 08.02 +40 20 51.8 r 557
2004-10-10 22:34:45 C 23 49 08.82 +40 20 06.2 r 557
2004-10-10 23:05:00 C 23 49 09.79 +40 19 12.0 r 557
2004-10-10 23:51:08 C 23 49 11.28 +40 17 48.9 r 557
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)