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
2004-09-27 20:43:18 C 23 34 08.07 +51 17 04.9 o 160
2004-09-27 20:43:38 C 23 34 08.11 +51 17 03.9 o 160
2004-09-27 20:43:59 C 23 34 08.11 +51 17 03.0 o 160
2004-09-28 07:51:03 C 23 34 48.22 +50 49 52.2 c H41
2004-09-28 07:52:12 C 23 34 48.27 +50 49 49.5 c H41
2004-09-28 07:53:38 C 23 34 48.38 +50 49 45.9 c H41
2004-09-28 07:54:36 C 23 34 48.40 +50 49 43.4 c H41
2004-09-28 07:55:35 C 23 34 48.48 +50 49 41.2 c H41
2004-09-28 22:36:10 C 23 35 45.60 +50 14 14.9 r A13
2004-09-28 22:37:05 C 23 35 45.65 +50 14 12.7 r A13
2004-09-28 22:37:57 C 23 35 45.69 +50 14 10.4 r A13
2004-09-28 22:39:43 C 23 35 45.78 +50 14 06.3 r A13
2004-09-28 22:41:22 C 23 35 45.88 +50 14 02.3 r A13
2004-09-29 03:48:38 C 23 36 05.59 +50 01 49.8 r 750
2004-09-29 03:54:04 C 23 36 05.85 +50 01 37.1 r 750
2004-09-29 04:02:10 C 23 36 06.25 +50 01 18.1 r 750
2004-09-29 04:11:47 C 23 36 06.72 +50 00 55.4 r 750
2004-09-29 04:17:24 C 23 36 07.01 +50 00 42.2 r 750
2004-09-29 04:21:08 C 23 36 07.19 +50 00 33.3 r 750
2004-09-29 19:38:41 C 23 37 02.57 +49 24 26.2 r A30
2004-09-29 19:41:39 C 23 37 02.71 +49 24 19.5 r A30
2004-09-29 19:43:40 C 23 37 03.64 +49 24 17.1 r A30
2004-09-29 19:46:39 C 23 37 03.20 +49 24 09.3 r A30
2004-09-30 05:43:21 C 23 37 35.19 +49 01 11.6 c H41
2004-09-30 05:44:34 C 23 37 35.26 +49 01 08.7 c H41
2004-09-30 05:45:44 C 23 37 35.29 +49 01 06.1 c H41
2004-09-30 05:46:42 C 23 37 35.33 +49 01 03.8 c H41
2004-09-30 05:47:46 C 23 37 35.39 +49 01 01.4 c H41
2004-09-30 11:48:38 C 23 37 57.54 +48 47 07.6 m 379
2004-09-30 11:51:56 C 23 37 57.73 +48 46 59.7 m 379
2004-09-30 11:53:34 C 23 37 57.79 +48 46 56.4 m 379
2004-09-30 11:55:14 C 23 37 57.85 +48 46 52.4 m 379
2004-09-30 11:56:53 C 23 37 57.94 +48 46 48.7 m 379
2004-09-30 13:04:46 C 23 38 00.89 +48 44 15.0 m 379
2004-09-30 13:11:21 C 23 38 01.17 +48 44 00.1 m 379
2004-09-30 13:13:01 C 23 38 01.26 +48 43 56.3 m 379
2004-09-30 13:14:39 C 23 38 01.29 +48 43 52.8 m 379
2004-10-01 11:25:45 C 23 39 14.49 +47 53 33.6 o 379
2004-10-01 11:27:23 C 23 39 14.52 +47 53 29.7 o 379
2004-10-01 11:29:03 C 23 39 14.62 +47 53 26.1 o 379
2004-10-01 11:30:41 C 23 39 14.70 +47 53 22.6 o 379
2004-10-01 11:37:18 C 23 39 14.97 +47 53 08.0 o 379
2004-10-01 11:38:56 C 23 39 15.01 +47 53 04.3 o 379
2004-10-01 11:40:36 C 23 39 15.13 +47 53 00.8 o 379
2004-10-01 11:43:54 C 23 39 15.24 +47 52 53.6 o 379
2004-10-01 19:53:02 C 23 39 39.78 +47 34 31.4 o 084
2004-10-02 01:35:25 C 23 39 58.32 +47 22 02.4 r 928
2004-10-02 01:38:35 C 23 39 58.45 +47 21 55.6 r 928
2004-10-02 01:41:20 C 23 39 58.57 +47 21 49.6 r 928
2004-10-02 01:49:11 C 23 39 58.92 +47 21 32.5 r 928
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)