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
2004-10-14 06:04:29 C 23 52 07.63 +38 04 34.8 c H41
2004-10-14 06:05:54 C 23 52 07.68 +38 04 32.6 c H41
2004-10-14 06:07:08 C 23 52 07.72 +38 04 30.2 c H41
2004-10-14 06:09:00 C 23 52 07.77 +38 04 27.3 c H41
2004-10-14 06:10:09 C 23 52 07.80 +38 04 25.1 c H41
2004-10-14 14:43:54 C 23 52 26.86 +37 50 27.8 m 379
2004-10-14 14:52:30 C 23 52 27.07 +37 50 13.2 m 379
2004-10-14 14:56:49 C 23 52 27.23 +37 50 06.3 m 379
2004-10-14 14:58:57 C 23 52 27.25 +37 50 02.8 m 379
2004-10-15 13:43:06 C 23 53 18.03 +37 13 35.1 m 355
2004-10-15 13:46:19 C 23 53 18.18 +37 13 30.1 m 355
2004-10-15 13:50:06 C 23 53 18.30 +37 13 23.3 m 355
2004-10-15 18:28:35 C 23 53 29.42 +37 05 52.6 o 084
2004-10-15 18:53:25 C 23 53 31.11 +37 05 17.7 r J87
2004-10-15 18:59:09 C 23 53 31.31 +37 05 08.9 r J87
2004-10-15 19:04:53 C 23 53 31.51 +37 05 00.1 r J87
2004-10-15 19:10:37 C 23 53 31.67 +37 04 51.1 r J87
2004-10-17 04:51:58 C 23 54 44.98 +36 12 47.3 15.8 c 704
2004-10-17 05:33:16 C 23 54 46.26 +36 11 44.1 16.0 c 704
2004-10-17 06:09:38 C 23 54 47.26 +36 10 49.1 15.8 c 704
2004-10-17 12:59:35 C 23 55 02.73 +36 00 28.0 r 379
2004-10-17 13:03:52 C 23 55 02.84 +36 00 21.5 r 379
2004-10-17 13:06:02 C 23 55 02.95 +36 00 18.2 r 379
2004-10-17 13:08:11 C 23 55 02.98 +36 00 15.3 r 379
2004-10-17 13:12:29 C 23 55 03.12 +36 00 08.8 r 379
2004-10-17 13:16:46 C 23 55 03.24 +36 00 01.8 r 379
2004-10-17 13:34:18 C 23 55 03.72 +35 59 34.9 m 355
2004-10-17 13:39:19 C 23 55 03.85 +35 59 27.0 m 355
2004-10-17 13:44:26 C 23 55 04.01 +35 59 19.9 m 355
2004-10-17 13:49:31 C 23 55 04.17 +35 59 12.0 m 355
2004-10-17 19:53:17 C 23 55 18.36 +35 49 59.0 r 557
2004-10-17 20:53:06 C 23 55 20.24 +35 48 30.4 r 557
2004-10-17 21:28:22 C 23 55 21.34 +35 47 37.5 r 557
2004-10-17 22:00:14 C 23 55 22.34 +35 46 49.7 r 557
2004-10-17 22:32:06 C 23 55 23.34 +35 46 02.0 r 557
2004-10-17 22:54:23 C 23 55 24.04 +35 45 28.5 r 557
2004-10-17 23:51:45 C 23 55 25.90 +35 44 01.3 r 557
2004-10-18 11:46:01 C 23 55 53.56 +35 26 30.6 r 379
2004-10-18 11:48:10 C 23 55 53.65 +35 26 27.4 r 379
2004-10-18 17:32:47 C 23 56 06.80 +35 17 53.2 r 557
2004-10-18 18:33:16 C 23 56 08.81 +35 16 26.2 r 557
2004-10-18 19:33:14 C 23 56 10.74 +35 14 59.7 r 557
2004-10-18 21:31:34 C 23 56 14.49 +35 12 07.9 r 557
2004-10-18 23:51:45 C 23 56 19.00 +35 08 41.7 r 557
2004-10-19 00:53:49 C 23 56 21.07 +35 07 09.9 r 557
2004-10-19 02:30:39 C 23 56 24.47 +35 04 46.0 r 557
2004-10-19 03:02:30 C 23 56 25.64 +35 03 58.7 r 557
2004-10-19 04:19:48 C 23 56 29.69 +35 02 21.1 r H41
2004-10-19 04:21:31 C 23 56 29.74 +35 02 18.4 r H41
2004-10-19 04:22:47 C 23 56 29.79 +35 02 16.5 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)