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
2004-09-26 05:45:03 C 23 31 22.51 +52 55 22.4 c H41
2004-09-26 05:47:40 C 23 31 22.73 +52 55 15.1 c H41
2004-09-26 05:48:38 C 23 31 22.77 +52 55 13.2 c H41
2004-09-26 05:51:34 C 23 31 22.95 +52 55 05.5 c H41
2004-09-26 05:53:30 C 23 31 23.05 +52 55 00.7 c H41
2004-09-26 05:54:47 C 23 31 23.13 +52 54 57.3 c H41
2004-09-26 19:30:37 C 23 32 25.16 +52 19 59.1 c A48
2004-09-26 19:40:47 C 23 32 25.78 +52 19 33.8 c A48
2004-09-26 19:50:57 C 23 32 26.40 +52 19 08.9 c A48
2004-09-27 02:41:53 C 23 32 55.30 +52 01 52.3 r 750
2004-09-27 02:47:24 C 23 32 55.62 +52 01 38.8 r 750
2004-09-27 02:50:11 C 23 32 55.76 +52 01 32.0 r 750
2004-09-27 02:53:00 C 23 32 55.95 +52 01 25.1 r 750
2004-09-27 02:58:31 C 23 32 56.27 +52 01 11.6 r 750
2004-09-27 03:04:02 C 23 32 56.60 +52 00 57.9 r 750
2004-09-27 03:09:35 C 23 32 56.93 +52 00 44.4 r 750
2004-09-27 03:15:06 C 23 32 57.25 +52 00 30.7 r 750
2004-09-27 03:20:37 C 23 32 57.57 +52 00 17.2 r 750
2004-09-27 03:26:08 C 23 32 57.90 +52 00 03.5 r 750
2004-09-27 03:31:40 C 23 32 58.22 +51 59 49.8 r 750
2004-09-27 03:37:11 C 23 32 58.54 +51 59 36.2 r 750
2004-09-27 03:48:14 C 23 32 59.17 +51 59 08.7 r 750
2004-09-27 03:53:46 C 23 32 59.49 +51 58 55.0 r 750
2004-09-27 03:59:17 C 23 32 59.80 +51 58 41.5 r 750
2004-09-27 04:04:48 C 23 33 00.13 +51 58 27.7 r 750
2004-09-27 04:10:24 C 23 33 00.45 +51 58 13.7 r 750
2004-09-27 04:16:01 C 23 33 00.76 +51 57 59.9 r 750
2004-09-27 04:38:24 C 23 33 02.04 +51 57 04.1 r 750
2004-09-27 07:01:28 C 23 33 10.03 +51 51 09.6 c H41
2004-09-27 07:02:32 C 23 33 10.08 +51 51 07.0 c H41
2004-09-27 07:03:53 C 23 33 10.15 +51 51 03.7 c H41
2004-09-27 07:05:07 C 23 33 10.21 +51 51 00.5 c H41
2004-09-27 07:06:08 C 23 33 10.29 +51 50 57.9 c H41
2004-09-27 20:37:06 C 23 34 07.72 +51 17 19.6 o 160
2004-09-27 20:37:27 C 23 34 07.74 +51 17 18.7 o 160
2004-09-27 20:37:48 C 23 34 07.76 +51 17 17.9 o 160
2004-09-27 20:38:10 C 23 34 07.78 +51 17 17.2 o 160
2004-09-27 20:38:30 C 23 34 07.81 +51 17 16.3 o 160
2004-09-27 20:38:52 C 23 34 07.82 +51 17 15.4 o 160
2004-09-27 20:39:12 C 23 34 07.85 +51 17 14.5 o 160
2004-09-27 20:39:33 C 23 34 07.85 +51 17 13.7 o 160
2004-09-27 20:39:54 C 23 34 07.89 +51 17 13.1 o 160
2004-09-27 20:40:16 C 23 34 07.89 +51 17 12.1 o 160
2004-09-27 20:40:54 C 23 34 07.92 +51 17 10.5 o 160
2004-09-27 20:41:14 C 23 34 07.96 +51 17 09.7 o 160
2004-09-27 20:41:35 C 23 34 07.98 +51 17 08.7 o 160
2004-09-27 20:41:55 C 23 34 08.00 +51 17 07.9 o 160
2004-09-27 20:42:16 C 23 34 08.03 +51 17 07.2 o 160
2004-09-27 20:42:36 C 23 34 08.02 +51 17 06.3 o 160
2004-09-27 20:42:57 C 23 34 08.04 +51 17 05.7 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)