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
2004-10-19 04:23:53 C 23 56 29.84 +35 02 15.1 r H41
2004-10-19 04:25:09 C 23 56 29.86 +35 02 13.1 r H41
2004-10-19 18:10:09 C 23 57 01.25 +34 42 21.1 r 557
2004-10-19 19:04:17 C 23 57 03.02 +34 41 05.3 r 557
2004-10-19 20:14:16 C 23 57 05.29 +34 39 26.7 r 557
2004-10-19 20:39:46 C 23 57 06.09 +34 38 50.6 r 557
2004-10-19 21:46:50 C 23 57 08.24 +34 37 15.4 r 557
2004-10-19 22:12:19 C 23 57 09.05 +34 36 38.9 r 557
2004-10-19 23:44:00 C 23 57 12.03 +34 34 27.4 r 557
2004-10-20 00:09:29 C 23 57 12.88 +34 33 50.7 r 557
2004-10-20 01:16:12 C 23 57 15.16 +34 32 14.4 r 557
2004-10-20 01:42:15 C 23 57 16.08 +34 31 36.7 r 557
2004-10-20 02:55:27 C 23 57 18.71 +34 29 50.7 r 557
2004-10-20 05:26:45 C 23 57 25.07 +34 26 30.7 r H41
2004-10-20 05:28:33 C 23 57 25.11 +34 26 28.4 r H41
2004-10-20 05:30:34 C 23 57 25.16 +34 26 24.6 r H41
2004-10-20 05:35:27 C 23 57 25.32 +34 26 18.4 r H41
2004-10-20 05:37:58 C 23 57 25.40 +34 26 15.2 r H41
2004-10-22 13:39:45 C 23 59 31.22 +33 09 49.8 r 379
2004-10-22 13:41:55 C 23 59 31.30 +33 09 47.4 r 379
2004-10-22 13:50:31 C 23 59 31.59 +33 09 35.8 r 379
2004-10-22 13:52:39 C 23 59 31.64 +33 09 33.4 r 379
2004-10-22 17:43:40 C 23 59 41.55 +33 04 20.8 r 557
2004-10-22 18:33:38 C 23 59 43.28 +33 03 16.1 c 113
2004-10-22 18:35:14 C 23 59 43.33 +33 03 14.1 c 113
2004-10-22 18:36:50 C 23 59 43.39 +33 03 12.0 c 113
2004-10-22 18:38:25 C 23 59 43.44 +33 03 10.1 c 113
2004-10-22 18:40:00 C 23 59 43.49 +33 03 07.9 c 113
2004-10-22 18:44:10 C 23 59 43.61 +33 03 02.6 r 557
2004-10-22 19:12:51 C 23 59 44.57 +33 02 25.3 r 557
2004-10-22 19:24:06 C 23 59 45.12 +33 02 11.5 r A16
2004-10-22 19:25:45 C 23 59 45.18 +33 02 09.0 r A16
2004-10-22 19:27:24 C 23 59 45.24 +33 02 06.9 r A16
2004-10-22 19:31:15 C 23 59 45.35 +33 02 01.7 r A16
2004-10-22 19:44:43 C 23 59 45.63 +33 01 43.8 r 557
2004-10-22 20:24:58 C 23 59 46.96 +33 00 51.3 r 557
2004-10-22 20:54:17 C 23 59 47.93 +33 00 12.9 r 557
2004-10-22 21:26:33 C 23 59 48.99 +32 59 30.6 r 557
2004-10-22 22:34:33 C 23 59 51.24 +32 58 01.0 r 557
2004-10-22 22:53:40 C 23 59 51.89 +32 57 35.5 r 557
2004-10-22 23:55:24 C 23 59 54.05 +32 56 17.9 r A06
2004-10-23 00:05:01 C 23 59 54.37 +32 56 04.5 r A06
2004-10-23 11:58:44 C 00 00 22.33 +32 40 42.6 r 379
2004-10-23 12:00:53 C 00 00 22.41 +32 40 40.1 r 379
2004-10-23 12:07:20 C 00 00 22.64 +32 40 31.4 r 379
2004-10-23 12:15:57 C 00 00 22.90 +32 40 20.9 r 379
2004-10-23 18:04:24 C 00 00 36.87 +32 32 45.8 r A16
2004-10-23 18:10:22 C 00 00 37.09 +32 32 38.4 r A16
2004-10-23 18:16:52 C 00 00 37.36 +32 32 30.9 r A16
2004-10-23 18:24:27 C 00 00 37.59 +32 32 20.9 r A16
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)