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
2004-10-03 18:28:10 C 23 41 58.72 +45 53 41.2 r 118
2004-10-03 18:29:51 C 23 41 58.81 +45 53 37.8 r 118
2004-10-03 18:31:33 C 23 41 58.88 +45 53 34.2 r 118
2004-10-03 18:33:14 C 23 41 58.96 +45 53 30.8 r 118
2004-10-03 18:52:35 C 23 41 59.75 +45 52 49.7 r 557
2004-10-03 19:22:09 C 23 42 00.94 +45 51 48.5 r 557
2004-10-03 19:52:09 C 23 42 02.13 +45 50 46.3 r 557
2004-10-03 20:52:14 C 23 42 04.46 +45 48 41.1 r 557
2004-10-03 22:31:09 C 23 42 08.25 +45 45 12.9 r 557
2004-10-03 23:00:42 C 23 42 09.36 +45 44 10.5 r 557
2004-10-03 23:30:15 C 23 42 10.52 +45 43 07.5 r 557
2004-10-03 23:59:49 C 23 42 11.67 +45 42 04.4 r 557
2004-10-04 00:45:31 C 23 42 13.49 +45 40 26.6 r 557
2004-10-04 01:15:05 C 23 42 14.68 +45 39 23.2 r 557
2004-10-04 01:47:20 C 23 42 16.03 +45 38 13.8 r 557
2004-10-04 10:44:55 C 23 42 40.19 +45 19 37.2 c G90
2004-10-04 10:49:27 C 23 42 40.39 +45 19 27.3 c G90
2004-10-04 10:53:59 C 23 42 40.58 +45 19 17.6 c G90
2004-10-04 18:49:34 C 23 43 05.96 +45 02 52.0 r 557
2004-10-04 19:14:54 C 23 43 06.94 +45 02 00.9 r 557
2004-10-04 21:00:48 C 23 43 10.91 +44 58 25.9 r 557
2004-10-04 22:18:31 C 23 43 13.75 +44 55 46.1 r 557
2004-10-04 22:48:58 C 23 43 14.86 +44 54 43.4 r 557
2004-10-04 23:11:08 C 23 43 15.68 +44 53 57.3 r 557
2004-10-05 00:11:23 C 23 43 17.94 +44 51 52.2 r 557
2004-10-05 00:50:52 C 23 43 19.45 +44 50 29.6 r 557
2004-10-05 01:13:30 C 23 43 20.34 +44 49 42.1 r 557
2004-10-05 02:04:02 C 23 43 22.37 +44 47 56.1 r 557
2004-10-05 02:32:00 C 23 43 23.53 +44 46 57.3 r 557
2004-10-05 03:04:22 C 23 43 24.91 +44 45 49.2 r 557
2004-10-05 03:48:27 C 23 43 26.84 +44 44 16.4 r 557
2004-10-05 05:46:05 C 23 43 34.28 +44 40 40.5 c G90
2004-10-05 05:50:34 C 23 43 34.43 +44 40 31.4 c G90
2004-10-05 05:55:06 C 23 43 34.58 +44 40 22.2 c G90
2004-10-05 18:45:57 C 23 44 09.63 +44 14 07.8 c A35
2004-10-05 18:47:06 C 23 44 09.68 +44 14 05.5 c A35
2004-10-05 18:49:24 C 23 44 09.77 +44 14 00.8 c A35
2004-10-05 18:52:07 C 23 44 09.83 +44 13 55.8 r 557
2004-10-05 19:20:49 C 23 44 10.90 +44 12 59.3 r 557
2004-10-05 20:00:55 C 23 44 12.36 +44 11 40.1 r 557
2004-10-05 20:34:22 C 23 44 13.56 +44 10 33.7 r 557
2004-10-05 21:03:02 C 23 44 14.58 +44 09 36.6 r 557
2004-10-05 22:29:27 C 23 44 17.62 +44 06 43.4 r 557
2004-10-05 23:31:49 C 23 44 19.85 +44 04 37.2 r 557
2004-10-06 00:03:15 C 23 44 20.99 +44 03 33.3 r 557
2004-10-06 00:40:57 C 23 44 22.38 +44 02 16.5 r 557
2004-10-06 01:15:42 C 23 44 23.69 +44 01 05.4 r 557
2004-10-06 01:41:23 C 23 44 24.69 +44 00 12.9 r 557
2004-10-06 02:20:31 C 23 44 26.25 +43 58 52.6 r 557
2004-10-06 05:13:30 C 23 44 35.21 +43 53 24.9 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)