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
2004-03-16 22:30:49 C 12 11 03.98 -21 54 17.8 c 246
2004-03-16 22:31:54 C 12 11 03.89 -21 54 17.8 c 246
2004-03-16 22:33:08 C 12 11 03.81 -21 54 18.6 c 246
2004-03-16 22:34:14 C 12 11 03.71 -21 54 18.5 c 246
2004-03-16 22:35:11 C 12 11 03.69 -21 54 18.8 c 246
2004-03-16 22:37:42 C 12 11 03.50 -21 54 19.7 c 246
2004-03-17 07:39:27 C 12 10 28.37 -21 55 26.6 18.2 c 704
2004-03-17 07:55:50 C 12 10 27.36 -21 55 29.2 18.4 c 704
2004-03-17 08:12:07 C 12 10 26.16 -21 55 30.8 18.4 c 704
2004-03-17 08:28:20 C 12 10 25.07 -21 55 33.0 18.2 c 704
2004-03-17 08:44:36 C 12 10 23.97 -21 55 34.8 18.2 c 704
2004-03-18 06:41:54 C 12 08 57.44 -21 58 07.5 17.6 c 704
2004-03-18 06:42:49 C 12 08 57.37 -21 58 07.5 17.6 c 704
2004-03-18 06:57:59 C 12 08 56.33 -21 58 09.4 17.7 c 704
2004-03-18 06:58:55 C 12 08 56.25 -21 58 09.4 17.6 c 704
2004-03-18 07:14:44 C 12 08 55.16 -21 58 11.2 17.7 c 704
2004-03-18 07:15:36 C 12 08 55.09 -21 58 10.7 17.7 c 704
2004-03-18 07:31:43 C 12 08 53.97 -21 58 13.0 17.9 c 704
2004-03-18 07:32:33 C 12 08 53.91 -21 58 12.8 17.9 c 704
2004-03-18 07:48:21 C 12 08 52.82 -21 58 14.8 17.8 c 704
2004-03-18 07:49:14 C 12 08 52.75 -21 58 14.7 17.9 c 704
2004-03-20 04:33:48 C 12 05 48.73 -22 02 17.3 17.9 d H72
2004-03-20 04:38:28 C 12 05 48.49 -22 02 18.0 17.6 d H72
2004-03-20 04:43:08 C 12 05 48.12 -22 02 18.2 17.5 d H72
2004-03-20 04:47:48 C 12 05 47.69 -22 02 17.7 17.8 d H72
2004-03-21 07:28:54 C 12 03 52.94 -22 04 04.0 16.7 d H72
2004-03-21 07:33:35 C 12 03 52.57 -22 04 02.7 17.8 d H72
2004-03-21 07:38:15 C 12 03 52.37 -22 04 01.1 17.4 d H72
2004-03-26 06:50:43 C 11 54 47.35 -22 04 44.4 17.8 c 704
2004-03-26 07:06:36 C 11 54 46.03 -22 04 43.7 18.3 c 704
2004-03-26 07:22:11 C 11 54 44.73 -22 04 42.9 18.6 c 704
2004-03-26 07:37:40 C 11 54 43.46 -22 04 42.2 18.0 c 704
2004-03-26 07:53:06 C 11 54 42.15 -22 04 41.4 18.2 c 704
2004-03-28 06:18:44 C 11 50 56.73 -22 01 44.4 c 670
2004-03-28 07:31:08 C 11 50 50.59 -22 01 37.8 c 670
2004-03-28 20:24:01 C 11 49 47.06 -22 00 28.8 c 046
2004-03-28 20:25:39 C 11 49 46.95 -22 00 28.6 c 046
2004-03-28 20:26:45 C 11 49 46.84 -22 00 28.7 c 046
2004-03-28 20:27:55 C 11 49 46.74 -22 00 29.4 c 046
2004-03-28 20:29:02 C 11 49 46.67 -22 00 29.2 c 046
2004-04-08 10:02:28 C 11 27 57.88 -21 08 12.6 r D85
2004-04-08 10:04:07 C 11 27 57.67 -21 08 12.9 r D85
2004-04-08 10:10:31 C 11 27 57.20 -21 08 10.5 r D85
2004-04-09 04:59:30 C 11 26 18.41 -21 02 26.5 r H41
2004-04-09 05:02:31 C 11 26 18.13 -21 02 25.9 r H41
2004-04-09 05:06:16 C 11 26 17.81 -21 02 24.1 r H41
2004-04-09 05:08:41 C 11 26 17.60 -21 02 22.8 r H41
2004-04-09 13:02:26 C 11 25 36.69 -20 59 46.5 m 300
2004-04-09 13:04:24 C 11 25 36.55 -20 59 45.5 m 300
2004-04-09 13:10:33 C 11 25 36.02 -20 59 44.4 m 300
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)