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
2004-04-09 13:12:31 C 11 25 35.89 -20 59 42.9 m 300
2004-04-12 11:03:59 C 11 19 36.58 -20 34 24.1 r 428
2004-04-12 11:06:29 C 11 19 36.38 -20 34 23.2 r 428
2004-04-12 11:08:59 C 11 19 36.14 -20 34 22.1 r 428
2004-04-12 11:11:32 C 11 19 35.91 -20 34 21.2 r 428
2004-04-16 02:52:23 C 11 12 19.73 -19 58 14.8 17.2 d H72
2004-04-16 02:56:55 C 11 12 19.30 -19 58 11.4 17.5 d H72
2004-04-16 03:01:27 C 11 12 18.98 -19 58 09.1 17.6 d H72
2004-04-16 03:05:58 C 11 12 18.56 -19 58 08.6 d H72
2004-04-16 04:07:33 C 11 12 13.50 -19 57 42.9 r H41
2004-04-16 04:09:59 C 11 12 13.30 -19 57 41.3 r H41
2004-04-16 04:12:06 C 11 12 13.19 -19 57 40.5 r H41
2004-04-16 04:14:20 C 11 12 12.98 -19 57 39.6 r H41
2004-04-17 04:31:56 C 11 10 16.39 -19 46 44.1 17.5 c 704
2004-04-17 04:47:32 C 11 10 15.11 -19 46 36.6 17.9 c 704
2004-04-17 05:02:54 C 11 10 13.83 -19 46 30.1 18.2 c 704
2004-04-17 05:18:23 C 11 10 12.56 -19 46 22.9 18.2 c 704
2004-04-17 05:33:45 C 11 10 11.27 -19 46 15.8 18.0 c 704
2004-04-18 02:20:55 C 11 08 33.59 -19 36 38.0 16.6 d H72
2004-04-18 02:25:12 C 11 08 33.26 -19 36 35.9 17.1 d H72
2004-04-18 02:29:28 C 11 08 32.94 -19 36 33.7 17.8 d H72
2004-04-18 02:33:44 C 11 08 32.55 -19 36 32.0 17.3 d H72
2004-04-18 04:39:17 C 11 08 22.38 -19 35 35.0 r H41
2004-04-18 04:46:01 C 11 08 21.89 -19 35 31.3 r H41
2004-04-18 04:48:42 C 11 08 21.52 -19 35 29.2 r H41
2004-04-18 04:50:55 C 11 08 21.41 -19 35 28.9 r H41
2004-04-20 10:15:47 C 11 04 18.42 -19 09 31.4 r 428
2004-04-20 10:18:12 C 11 04 18.22 -19 09 30.0 r 428
2004-04-20 10:20:36 C 11 04 18.04 -19 09 28.8 r 428
2004-04-20 10:23:00 C 11 04 17.85 -19 09 27.6 r 428
2004-04-21 11:52:35 C 11 02 25.97 -18 56 59.5 r 379
2004-04-21 11:55:44 C 11 02 25.81 -18 56 58.6 r 379
2004-04-23 09:44:53 C 10 59 12.04 -18 33 29.4 t 608
2004-04-23 10:00:04 C 10 59 10.96 -18 33 21.4 t 608
2004-04-23 10:15:10 C 10 59 09.89 -18 33 13.5 t 608
2004-04-23 21:00:32 C 10 58 26.87 -18 27 42.3 r J87
2004-04-23 21:10:04 C 10 58 26.17 -18 27 37.3 r J87
2004-04-23 21:18:39 C 10 58 25.58 -18 27 32.9 r J87
2004-04-25 03:24:02 C 10 56 26.58 -18 11 44.5 16.7 c 704
2004-04-25 03:38:19 C 10 56 25.61 -18 11 36.2 17.1 c 704
2004-04-25 03:52:31 C 10 56 24.65 -18 11 29.4 17.0 c 704
2004-04-25 19:45:25 C 10 55 23.89 -18 03 05.4 o 151
2004-04-25 19:49:55 C 10 55 23.58 -18 03 02.8 o 151
2004-04-25 19:50:58 C 10 55 23.54 -18 03 02.1 o 151
2004-04-25 19:52:06 C 10 55 23.47 -18 03 01.8 o 151
2004-04-27 04:16:57 C 10 53 23.27 -17 45 40.0 r H41
2004-04-27 04:24:03 C 10 53 22.85 -17 45 35.8 r H41
2004-04-27 04:26:13 C 10 53 22.67 -17 45 34.2 r H41
2004-04-27 04:28:32 C 10 53 22.51 -17 45 33.2 r H41
2004-04-28 06:10:39 C 10 51 52.46 -17 31 40.6 17.6 c 608
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)