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
2004-10-11 00:26:03 C 23 49 12.44 +40 16 46.0 r 557
2004-10-11 01:11:52 C 23 49 13.98 +40 15 23.1 r 557
2004-10-11 02:31:45 C 23 49 16.81 +40 12 58.1 r 557
2004-10-11 02:50:53 C 23 49 17.52 +40 12 23.3 r 557
2004-10-11 03:52:56 C 23 49 19.87 +40 10 30.5 r 557
2004-10-11 05:14:53 C 23 49 24.24 +40 08 20.9 r 750
2004-10-11 05:17:26 C 23 49 24.31 +40 08 16.4 r 750
2004-10-11 05:21:53 C 23 49 24.46 +40 08 08.6 r 750
2004-10-11 17:34:59 C 23 49 53.95 +39 46 36.0 r 557
2004-10-11 18:19:39 C 23 49 55.47 +39 45 20.0 r 557
2004-10-11 19:14:49 C 23 49 57.27 +39 43 45.7 r 557
2004-10-11 19:46:43 C 23 49 58.29 +39 42 51.0 r 557
2004-10-11 20:07:08 C 23 49 58.53 +39 42 12.1 o 084
2004-10-11 20:27:41 C 23 49 59.66 +39 41 38.5 c A32
2004-10-11 20:34:09 C 23 49 59.87 +39 41 27.5 c A32
2004-10-11 20:37:45 C 23 49 59.90 +39 41 23.1 r 557
2004-10-11 20:40:37 C 23 50 00.07 +39 41 16.4 c A32
2004-10-11 20:47:06 C 23 50 00.28 +39 41 05.0 c A32
2004-10-11 20:55:12 C 23 50 00.54 +39 40 51.0 c A32
2004-10-11 21:00:06 C 23 50 00.60 +39 40 44.6 r 557
2004-10-11 21:54:31 C 23 50 02.31 +39 39 10.2 r 557
2004-10-11 22:39:12 C 23 50 03.70 +39 37 52.2 r 557
2004-10-11 23:42:25 C 23 50 05.71 +39 36 01.4 r 557
2004-10-12 00:17:29 C 23 50 06.86 +39 34 59.5 r 557
2004-10-12 01:33:05 C 23 50 09.41 +39 32 46.0 r 557
2004-10-12 02:50:38 C 23 50 12.17 +39 30 28.6 r 557
2004-10-12 03:22:32 C 23 50 13.36 +39 29 31.9 r 557
2004-10-12 06:06:00 C 23 50 20.74 +39 25 08.9 15.6 c 704
2004-10-12 06:21:57 C 23 50 21.22 +39 24 41.4 15.7 c 704
2004-10-12 06:37:54 C 23 50 21.70 +39 24 13.7 16.0 c 704
2004-10-12 06:53:51 C 23 50 22.18 +39 23 46.0 16.0 c 704
2004-10-12 07:09:49 C 23 50 22.64 +39 23 18.2 16.1 c 704
2004-10-12 17:33:19 C 23 50 48.06 +39 05 20.9 r 557
2004-10-12 17:52:28 C 23 50 48.70 +39 04 49.1 r 557
2004-10-12 18:17:59 C 23 50 49.55 +39 04 06.6 r 557
2004-10-12 19:09:02 C 23 50 51.21 +39 02 41.5 r 557
2004-10-12 20:18:00 C 23 50 53.92 +39 00 47.9 c J81
2004-10-12 20:20:56 C 23 50 53.48 +39 00 40.9 r 557
2004-10-12 20:27:40 C 23 50 54.21 +39 00 31.6 c J81
2004-10-12 21:03:37 C 23 50 55.30 +38 59 31.2 c J81
2004-10-12 21:06:40 C 23 50 54.90 +38 59 23.8 r 557
2004-10-12 21:21:40 C 23 50 55.87 +38 59 01.6 c J81
2004-10-12 23:45:35 C 23 51 02.07 +38 54 55.1 r 928
2004-10-12 23:48:17 C 23 51 02.16 +38 54 50.6 r 928
2004-10-12 23:57:23 C 23 51 02.46 +38 54 35.5 r 928
2004-10-13 19:46:25 C 23 51 46.14 +38 21 27.2 r A30
2004-10-13 19:47:07 C 23 51 46.15 +38 21 26.2 r A30
2004-10-13 19:48:57 C 23 51 46.22 +38 21 23.2 r A30
2004-10-13 19:50:34 C 23 51 46.27 +38 21 20.4 r A30
2004-10-14 06:01:47 C 23 52 07.53 +38 04 39.1 c 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)