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
2004-09-13 22:20:30 C 22 45 38.54 +68 15 32.7 o 160
2004-09-14 06:18:48 C 22 48 08.02 +67 46 05.7 c H41
2004-09-14 06:20:37 C 22 48 08.57 +67 45 59.6 c H41
2004-09-14 06:23:53 C 22 48 09.47 +67 45 47.6 c H41
2004-09-14 06:25:18 C 22 48 09.89 +67 45 42.3 c H41
2004-09-14 06:26:53 C 22 48 10.30 +67 45 36.5 c H41
2004-09-14 06:28:01 C 22 48 10.61 +67 45 32.3 c H41
2004-09-14 11:28:57 C 22 49 48.22 +67 26 58.3 o 379
2004-09-14 11:30:26 C 22 49 48.67 +67 26 52.5 o 379
2004-09-14 11:31:55 C 22 49 48.95 +67 26 47.7 o 379
2004-09-14 11:37:51 C 22 49 50.59 +67 26 26.1 o 379
2004-09-14 11:39:20 C 22 49 51.03 +67 26 21.3 o 379
2004-09-14 11:43:47 C 22 49 52.15 +67 26 05.0 o 379
2004-09-14 20:20:38 C 22 52 18.82 +66 54 36.0 14.6 i 057
2004-09-14 20:24:01 C 22 52 19.68 +66 54 23.9 14.6 i 057
2004-09-14 20:25:16 C 22 52 20.01 +66 54 19.3 14.7 i 057
2004-09-14 20:27:55 C 22 52 20.69 +66 54 09.7 14.5 i 057
2004-09-14 20:29:11 C 22 52 20.99 +66 54 05.4 14.5 i 057
2004-09-14 20:31:31 C 22 52 21.60 +66 53 57.2 14.6 i 057
2004-09-14 20:32:57 C 22 52 21.92 +66 53 52.0 14.8 i 057
2004-09-14 21:01:43 C 22 52 28.00 +66 51 56.5 o 084
2004-09-15 05:09:57 C 22 54 40.15 +66 22 54.5 c H41
2004-09-15 05:10:56 C 22 54 40.36 +66 22 51.1 c H41
2004-09-15 05:12:12 C 22 54 40.65 +66 22 46.5 c H41
2004-09-15 05:13:20 C 22 54 40.96 +66 22 42.6 c H41
2004-09-15 05:14:26 C 22 54 41.18 +66 22 38.5 c H41
2004-09-15 05:15:26 C 22 54 41.40 +66 22 35.0 c H41
2004-09-15 05:16:28 C 22 54 41.65 +66 22 31.2 c H41
2004-09-15 20:46:21 C 22 58 35.26 +65 27 02.6 c A32
2004-09-15 20:48:00 C 22 58 35.59 +65 26 57.2 c A32
2004-09-15 20:49:37 C 22 58 35.93 +65 26 51.5 c A32
2004-09-15 20:51:13 C 22 58 36.28 +65 26 45.9 c A32
2004-09-16 05:13:32 C 23 00 31.31 +64 57 35.4 c 918
2004-09-16 05:23:35 C 23 00 33.40 +64 56 59.1 c 918
2004-09-16 05:33:06 C 23 00 35.16 +64 56 27.6 c 918
2004-09-16 05:46:21 C 23 00 37.86 +64 55 41.7 c 918
2004-09-16 05:57:03 C 23 00 39.98 +64 55 04.5 c 918
2004-09-16 06:08:09 C 23 00 42.19 +64 54 25.9 c 918
2004-09-16 06:19:18 C 23 00 44.40 +64 53 47.0 c 918
2004-09-16 06:29:55 C 23 00 46.50 +64 53 10.0 c 918
2004-09-16 06:41:06 C 23 00 48.71 +64 52 30.8 c 918
2004-09-16 06:52:20 C 23 00 50.94 +64 51 51.4 c 918
2004-09-16 07:03:32 C 23 00 53.15 +64 51 12.0 c 918
2004-09-16 07:06:56 C 23 00 52.66 +64 51 04.9 c H41
2004-09-16 07:08:12 C 23 00 52.91 +64 51 00.6 c H41
2004-09-16 07:09:38 C 23 00 53.20 +64 50 55.4 c H41
2004-09-16 07:10:55 C 23 00 53.43 +64 50 50.8 c H41
2004-09-16 07:11:56 C 23 00 53.64 +64 50 47.3 c H41
2004-09-16 07:12:58 C 23 00 53.87 +64 50 43.7 c H41
2004-09-16 07:14:14 C 23 00 55.28 +64 50 34.3 c 918
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)