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
2004-09-20 04:25:56 C 23 17 00.97 +59 44 57.8 d G72
2004-09-20 04:27:33 C 23 17 01.16 +59 44 53.2 d G72
2004-09-20 04:29:09 C 23 17 01.35 +59 44 48.2 d G72
2004-09-20 04:30:46 C 23 17 01.53 +59 44 43.5 d G72
2004-09-20 06:35:01 C 23 17 12.16 +59 38 17.7 o 932
2004-09-20 06:39:00 C 23 17 12.64 +59 38 05.1 o 932
2004-09-20 06:43:00 C 23 17 13.09 +59 37 52.5 o 932
2004-09-20 06:45:00 C 23 17 13.33 +59 37 46.3 o 932
2004-09-20 06:46:15 C 23 17 14.70 +59 37 51.5 c H41
2004-09-20 06:47:19 C 23 17 14.80 +59 37 48.2 c H41
2004-09-20 06:48:17 C 23 17 14.91 +59 37 45.2 c H41
2004-09-20 06:49:16 C 23 17 15.02 +59 37 42.0 c H41
2004-09-20 06:50:18 C 23 17 15.15 +59 37 38.9 c H41
2004-09-20 18:20:50 C 23 18 47.32 +59 02 08.5 o 084
2004-09-20 19:58:47 C 23 18 59.51 +58 57 25.4 15.0 i 057
2004-09-20 20:01:39 C 23 18 59.82 +58 57 16.9 15.5 i 057
2004-09-20 20:03:27 C 23 19 00.00 +58 57 11.5 15.5 i 057
2004-09-20 20:05:59 C 23 19 00.28 +58 57 04.2 15.5 i 057
2004-09-20 20:07:11 C 23 19 00.41 +58 57 00.6 15.6 i 057
2004-09-20 20:10:20 C 23 19 00.77 +58 56 51.3 15.7 i 057
2004-09-20 20:11:22 C 23 19 00.85 +58 56 48.3 15.5 i 057
2004-09-20 20:12:23 C 23 19 00.96 +58 56 45.0 15.6 i 057
2004-09-20 20:13:24 C 23 19 01.10 +58 56 42.1 15.6 i 057
2004-09-20 20:15:40 C 23 19 01.32 +58 56 35.3 15.4 i 057
2004-09-20 21:15:34 C 23 19 08.31 +58 53 35.7 o 160
2004-09-20 21:15:56 C 23 19 08.37 +58 53 34.8 o 160
2004-09-20 21:16:16 C 23 19 08.42 +58 53 34.1 o 160
2004-09-20 21:16:37 C 23 19 08.45 +58 53 32.7 o 160
2004-09-20 21:16:57 C 23 19 08.45 +58 53 31.7 o 160
2004-09-20 21:17:20 C 23 19 08.51 +58 53 30.5 o 160
2004-09-20 21:17:41 C 23 19 08.57 +58 53 29.5 o 160
2004-09-20 21:18:24 C 23 19 08.62 +58 53 27.3 o 160
2004-09-20 21:19:15 C 23 19 08.71 +58 53 24.9 o 160
2004-09-20 21:19:35 C 23 19 08.75 +58 53 23.7 o 160
2004-09-20 21:19:58 C 23 19 08.76 +58 53 22.7 o 160
2004-09-20 21:20:19 C 23 19 08.81 +58 53 21.6 o 160
2004-09-20 21:20:39 C 23 19 08.89 +58 53 20.4 o 160
2004-09-20 21:21:00 C 23 19 08.89 +58 53 19.6 o 160
2004-09-20 21:21:20 C 23 19 08.93 +58 53 18.8 o 160
2004-09-20 21:21:41 C 23 19 09.00 +58 53 17.7 o 160
2004-09-20 21:22:01 C 23 19 09.03 +58 53 16.7 o 160
2004-09-20 21:22:22 C 23 19 09.08 +58 53 15.6 o 160
2004-09-20 21:30:29 C 23 19 09.92 +58 52 51.4 o 160
2004-09-20 21:30:51 C 23 19 09.91 +58 52 50.1 o 160
2004-09-20 21:31:11 C 23 19 09.99 +58 52 49.3 o 160
2004-09-20 21:31:32 C 23 19 09.96 +58 52 48.4 o 160
2004-09-20 21:31:53 C 23 19 10.09 +58 52 47.5 o 160
2004-09-20 21:32:13 C 23 19 10.11 +58 52 46.2 o 160
2004-09-20 21:32:34 C 23 19 10.13 +58 52 45.3 o 160
2004-09-20 21:32:55 C 23 19 10.15 +58 52 44.1 o 160
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)