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
2004-04-28 06:25:49 C 10 51 51.53 -17 31 32.4 17.7 c 608
2004-04-28 06:41:12 C 10 51 50.57 -17 31 24.2 17.6 c 608
2004-05-01 20:38:49 C 10 47 16.05 -16 44 50.3 17.6 r 130
2004-05-01 20:50:27 C 10 47 15.48 -16 44 43.7 17.7 r 130
2004-05-04 02:51:48 C 10 44 46.48 -16 15 28.4 r H41
2004-05-04 03:01:03 C 10 44 46.12 -16 15 24.3 r H41
2004-05-04 03:04:13 C 10 44 45.85 -16 15 21.9 r H41
2004-05-04 03:07:36 C 10 44 45.62 -16 15 19.0 r H41
2004-05-04 10:48:00 C 10 44 25.74 -16 10 55.7 r E25
2004-05-04 10:56:49 C 10 44 25.48 -16 10 50.1 r E25
2004-05-04 11:08:06 C 10 44 24.66 -16 10 42.1 r E25
2004-05-05 02:27:11 C 10 43 47.06 -16 02 44.4 r H41
2004-05-05 02:30:51 C 10 43 46.94 -16 02 43.3 r H41
2004-05-05 02:32:35 C 10 43 46.87 -16 02 41.6 r H41
2004-05-05 02:34:21 C 10 43 46.70 -16 02 40.4 r H41
2004-05-05 02:36:08 C 10 43 46.64 -16 02 40.2 r H41
2004-05-05 10:48:32 C 10 43 26.65 -15 58 00.7 r E25
2004-05-05 10:53:35 C 10 43 26.41 -15 57 58.3 r E25
2004-05-05 11:54:41 C 10 43 23.72 -15 57 25.8 r E25
2004-05-10 09:16:24 C 10 39 28.11 -14 55 37.8 r 428
2004-05-10 09:19:10 C 10 39 28.03 -14 55 36.5 r 428
2004-05-10 09:22:07 C 10 39 27.94 -14 55 34.9 r 428
2004-05-13 22:54:01 C 10 37 31.18 -14 12 27.2 c 807
2004-05-13 23:04:05 C 10 37 30.98 -14 12 21.8 c 807
2004-05-15 03:41:51 C 10 37 01.57 -13 58 41.2 17.5 c 704
2004-05-15 03:55:59 C 10 37 01.17 -13 58 34.3 18.2 c 704
2004-05-15 04:10:25 C 10 37 00.98 -13 58 26.7 17.8 c 704
2004-05-15 04:24:30 C 10 37 00.65 -13 58 19.3 17.9 c 704
2004-05-15 04:38:41 C 10 37 00.47 -13 58 13.4 18.0 c 704
2004-05-15 20:52:33 C 10 36 46.60 -13 50 26.5 r 170
2004-05-15 20:56:54 C 10 36 46.52 -13 50 24.4 r 170
2004-05-16 02:57:40 C 10 36 41.80 -13 47 31.1 r H41
2004-05-16 02:59:32 C 10 36 41.77 -13 47 29.3 r H41
2004-05-16 03:01:27 C 10 36 41.74 -13 47 29.2 r H41
2004-05-16 03:03:11 C 10 36 41.72 -13 47 28.7 r H41
2004-05-16 03:04:58 C 10 36 41.72 -13 47 27.6 r H41
2004-05-17 02:40:18 C 10 36 25.12 -13 36 19.8 r H41
2004-05-17 02:42:29 C 10 36 25.24 -13 36 18.3 r H41
2004-05-17 02:44:34 C 10 36 25.08 -13 36 18.0 r H41
2004-05-17 20:04:03 C 10 36 15.26 -13 28 15.8 r 151
2004-05-17 20:14:15 C 10 36 15.19 -13 28 11.5 r 151
2004-05-17 20:16:47 C 10 36 15.18 -13 28 09.9 r 151
2004-05-18 20:24:16 C 10 36 04.36 -13 17 06.6 c 434
2004-05-18 20:27:53 C 10 36 04.30 -13 17 04.5 c 434
2004-05-18 20:30:46 C 10 36 04.31 -13 17 03.8 c 434
2004-05-19 02:40:51 C 10 36 02.20 -13 14 13.9 r H41
2004-05-19 02:45:33 C 10 36 02.13 -13 14 12.0 r H41
2004-05-19 02:47:51 C 10 36 02.07 -13 14 11.3 r H41
2004-05-19 02:50:04 C 10 36 02.10 -13 14 10.1 r H41
2004-05-19 02:52:14 C 10 36 02.07 -13 14 09.5 r H41
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)