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
2004-10-23 18:32:02 C 00 00 37.85 +32 32 11.5 r A16
2004-10-23 19:45:29 C 00 00 40.56 +32 30 40.2 r J87
2004-10-23 19:56:57 C 00 00 40.90 +32 30 25.4 r J87
2004-10-23 20:08:26 C 00 00 41.30 +32 30 11.4 r J87
2004-10-24 04:48:16 C 00 01 00.52 +32 19 15.0 16.6 c 704
2004-10-24 04:48:25 C 00 01 00.52 +32 19 14.6 16.3 c 704
2004-10-24 05:05:10 C 00 01 01.12 +32 18 53.9 16.5 c 704
2004-10-24 05:05:18 C 00 01 01.10 +32 18 53.5 16.9 c 704
2004-10-24 05:22:04 C 00 01 01.63 +32 18 32.4 16.7 c 704
2004-10-24 05:22:12 C 00 01 01.62 +32 18 31.7 16.6 c 704
2004-10-24 05:39:14 C 00 01 02.17 +32 18 10.3 16.7 c 704
2004-10-24 05:39:21 C 00 01 02.16 +32 18 09.9 16.6 c 704
2004-10-24 05:56:11 C 00 01 02.73 +32 17 48.9 16.7 c 704
2004-10-24 05:56:19 C 00 01 02.71 +32 17 48.2 16.6 c 704
2004-10-24 17:36:04 C 00 01 30.66 +32 03 03.3 o 151
2004-10-24 17:41:28 C 00 01 30.83 +32 02 56.7 o 151
2004-10-24 17:43:41 C 00 01 30.91 +32 02 54.2 o 151
2004-10-24 17:45:10 C 00 01 30.94 +32 02 51.9 o 151
2004-10-24 17:46:11 C 00 01 30.99 +32 02 50.9 o 151
2004-10-24 17:47:21 C 00 01 31.04 +32 02 49.4 o 151
2004-10-24 17:47:54 C 00 01 31.06 +32 02 48.8 o 151
2004-10-24 17:50:07 C 00 01 31.12 +32 02 46.0 o 151
2004-10-24 17:50:34 C 00 01 31.13 +32 02 46.0 o 151
2004-10-24 17:50:40 C 00 01 31.15 +32 02 45.1 r A16
2004-10-24 17:51:06 C 00 01 31.14 +32 02 45.2 o 151
2004-10-24 17:58:21 C 00 01 31.48 +32 02 35.9 r A16
2004-10-24 18:05:55 C 00 01 31.72 +32 02 26.5 r A16
2004-10-24 18:13:28 C 00 01 31.96 +32 02 17.5 r A16
2004-10-24 18:21:03 C 00 01 32.24 +32 02 07.9 r A16
2004-10-25 17:10:44 C 00 02 24.51 +31 34 02.8 o 084
2004-10-28 18:15:02 C 00 05 15.59 +30 09 10.1 o 084
2004-10-30 18:13:24 C 00 07 10.98 +29 17 22.1 r 185
2004-10-30 18:18:17 C 00 07 11.17 +29 17 17.0 r 185
2004-10-30 18:20:15 C 00 07 11.25 +29 17 15.1 r 185
2004-10-30 18:27:37 C 00 07 11.51 +29 17 07.3 r 185
2004-10-30 18:42:39 C 00 07 12.04 +29 16 52.0 r 185
2004-10-30 18:46:54 C 00 07 11.86 +29 16 45.6 o 084
2004-10-30 18:50:36 C 00 07 12.34 +29 16 43.8 r 185
2004-11-01 21:49:19 C 00 09 16.17 +28 24 51.0 o 084
2004-11-02 17:20:57 C 00 10 05.37 +28 05 51.6 o 084
2004-11-03 14:03:42 C 00 10 56.37 +27 46 18.7 m 355
2004-11-03 14:10:19 C 00 10 56.63 +27 46 12.1 m 355
2004-11-03 14:13:23 C 00 10 56.72 +27 46 09.7 m 355
2004-11-03 14:16:54 C 00 10 56.89 +27 46 06.3 m 355
2004-11-03 17:40:29 C 00 11 06.59 +27 42 52.5 c 104
2004-11-03 17:44:28 C 00 11 06.74 +27 42 49.6 c 104
2004-11-03 17:50:13 C 00 11 06.96 +27 42 44.4 c 104
2004-11-03 17:54:52 C 00 11 07.15 +27 42 40.2 c 104
2004-11-04 04:13:07 C 00 11 32.82 +27 33 12.2 16.5 c 644
2004-11-04 04:44:25 C 00 11 33.91 +27 32 45.3 16.6 c 644
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)