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
2004-09-17 18:47:32 C 23 08 06.36 +62 49 24.0 d 118
2004-09-17 20:39:33 C 23 08 24.56 +62 43 18.7 d 048
2004-09-17 20:41:33 C 23 08 24.92 +62 43 11.9 d 048
2004-09-17 20:43:33 C 23 08 25.24 +62 43 05.6 d 048
2004-09-17 20:45:33 C 23 08 25.59 +62 42 59.5 d 048
2004-09-17 20:45:45 C 23 08 25.80 +62 42 57.1 o A39
2004-09-17 20:47:32 C 23 08 25.87 +62 42 52.3 d 048
2004-09-17 20:51:18 C 23 08 26.68 +62 42 39.0 o A39
2004-09-17 20:57:18 C 23 08 27.63 +62 42 19.4 o A39
2004-09-17 21:10:46 C 23 08 30.33 +62 41 37.3 o A16
2004-09-17 21:12:55 C 23 08 30.65 +62 41 30.6 o A16
2004-09-17 21:14:59 C 23 08 31.00 +62 41 23.9 o A16
2004-09-17 21:17:05 C 23 08 31.35 +62 41 16.8 o A16
2004-09-17 21:18:59 C 23 08 31.63 +62 41 10.7 o A16
2004-09-18 01:20:46 C 23 09 09.14 +62 27 43.7 o A39
2004-09-18 01:27:24 C 23 09 10.21 +62 27 21.3 o A39
2004-09-18 07:14:54 C 23 10 10.10 +62 08 36.6 c H41
2004-09-18 07:16:15 C 23 10 10.29 +62 08 32.2 c H41
2004-09-18 07:18:07 C 23 10 10.53 +62 08 25.7 c H41
2004-09-18 07:19:24 C 23 10 10.71 +62 08 21.5 c H41
2004-09-18 07:20:36 C 23 10 10.91 +62 08 17.5 c H41
2004-09-18 07:21:42 C 23 10 11.07 +62 08 13.8 c H41
2004-09-18 12:05:06 C 23 11 03.18 +61 52 49.2 m 355
2004-09-18 12:10:31 C 23 11 03.97 +61 52 31.8 m 355
2004-09-18 12:15:31 C 23 11 04.66 +61 52 15.4 m 355
2004-09-18 12:18:29 C 23 11 05.07 +61 52 06.3 m 355
2004-09-18 18:41:04 C 23 12 07.97 +61 31 07.9 o 151
2004-09-18 18:42:09 C 23 12 08.13 +61 31 04.5 o 151
2004-09-18 18:43:23 C 23 12 08.33 +61 31 00.6 o 151
2004-09-18 18:43:52 C 23 12 08.38 +61 30 59.3 o 151
2004-09-18 18:44:22 C 23 12 08.47 +61 30 57.6 o 151
2004-09-18 18:44:54 C 23 12 08.53 +61 30 55.9 o 151
2004-09-18 18:45:58 C 23 12 08.68 +61 30 52.6 o 151
2004-09-18 18:46:27 C 23 12 08.78 +61 30 51.2 o 151
2004-09-18 18:46:56 C 23 12 08.83 +61 30 49.6 o 151
2004-09-18 18:47:26 C 23 12 08.92 +61 30 48.0 o 151
2004-09-18 18:49:50 C 23 12 09.27 +61 30 40.5 o 151
2004-09-18 18:50:15 C 23 12 09.34 +61 30 39.0 o 151
2004-09-18 18:50:47 C 23 12 09.43 +61 30 37.3 o 151
2004-09-18 18:51:14 C 23 12 09.51 +61 30 35.8 o 151
2004-09-18 19:21:12 C 23 12 13.31 +61 29 04.5 d 118
2004-09-18 19:24:35 C 23 12 13.80 +61 28 54.0 d 118
2004-09-18 19:27:58 C 23 12 14.28 +61 28 43.4 d 118
2004-09-18 19:31:20 C 23 12 14.78 +61 28 32.9 d 118
2004-09-18 19:34:43 C 23 12 15.27 +61 28 22.2 d 118
2004-09-18 19:48:33 C 23 12 18.10 +61 27 29.8 o J94
2004-09-18 19:50:00 C 23 12 18.29 +61 27 24.7 o J94
2004-09-18 19:51:57 C 23 12 18.50 +61 27 19.2 o J94
2004-09-18 20:08:57 C 23 12 20.62 +61 26 32.2 o 240
2004-09-18 20:10:01 C 23 12 20.77 +61 26 28.9 o 240
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)