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
2014-01-27 06:07:33 C 08 29 43.56 +14 50 19.9 q 703
2014-01-27 06:14:51 C 08 29 43.20 +14 50 21.3 q 703
2014-01-27 06:22:07 C 08 29 42.82 +14 50 22.8 q 703
2014-02-08 06:15:43 C 08 14 20.95 +15 23 42.9 q G96
2014-02-08 06:25:26 C 08 14 20.44 +15 23 43.9 q G96
2014-02-08 06:35:09 C 08 14 19.93 +15 23 45.1 q G96
2014-02-08 06:44:54 C 08 14 19.44 +15 23 46.6 q G96
2014-02-26 09:29:36 C 07 55 19.030 +16 05 24.72 L F51
2014-02-26 09:48:23 C 07 55 18.362 +16 05 26.17 L F51
2014-02-26 10:07:05 C 07 55 17.685 +16 05 27.56 L F51
2014-02-26 10:25:51 C 07 55 17.024 +16 05 28.85 L F51
2015-12-13 08:46:26 C 05 54 03.995 +29 09 24.30 L F51
2015-12-13 09:02:34 C 05 54 02.863 +29 09 22.61 L F51
2017-01-03 14:52:57 C 10 34 33.634 +02 06 16.64 L F51
2017-01-03 15:09:23 C 10 34 33.434 +02 06 14.71 L F51
2017-01-03 15:25:44 C 10 34 33.232 +02 06 12.76 L F51
2017-01-03 15:42:07 C 10 34 33.028 +02 06 10.73 L F51
2017-01-31 08:15:40 C 10 15 29.05 +01 48 37.4 q 703
2017-01-31 08:29:49 C 10 15 28.41 +01 48 38.3 q 703
2017-01-31 08:37:10 C 10 15 28.08 +01 48 38.6 q 703
2017-02-01 06:08:05 C 10 14 28.51 +01 50 20.3 V G45
2017-02-01 06:08:15 C 10 14 28.44 +01 50 20.2 V G45
2017-02-01 07:06:55 C 10 14 25.68 +01 50 25.8 V G45
2017-02-01 08:00:06 C 10 14 23.10 +01 50 30.2 V G45
2017-02-01 10:04:02 C 10 14 17.11 +01 50 40.6 V G45
2017-02-01 10:54:35 C 10 14 14.69 +01 50 44.8 V G45
2017-02-01 11:40:34 C 10 14 12.46 +01 50 48.7 V G45
2017-02-01 12:20:07 C 10 14 10.64 +01 50 52.3 V G45
2017-02-01 12:20:58 C 10 14 10.52 +01 50 52.4 V G45
2017-02-01 12:53:10 C 10 14 09.03 +01 50 55.0 V G45
2017-02-02 05:31:45 C 10 13 22.20 +01 52 22.2 V G45
2017-02-02 05:33:31 C 10 13 22.10 +01 52 21.7 V G45
2017-02-02 06:38:07 C 10 13 18.91 +01 52 28.5 V G45
2017-02-02 07:37:18 C 10 13 16.01 +01 52 33.3 V G45
2017-02-02 08:33:50 C 10 13 13.24 +01 52 38.2 V G45
2017-02-02 09:26:39 C 10 13 10.64 +01 52 43.3 V G45
2017-02-02 10:23:08 C 10 13 07.87 +01 52 48.6 V G45
2017-02-02 11:15:06 C 10 13 05.31 +01 52 53.1 V G45
2017-02-02 11:57:08 C 10 13 03.26 +01 52 57.2 V G45
2017-02-02 11:59:02 C 10 13 03.15 +01 52 58.3 V G45
2017-02-03 06:23:39 C 10 12 10.07 +01 54 42.3 V G45
2017-02-03 07:20:29 C 10 12 07.23 +01 54 47.6 V G45
2017-02-03 08:14:45 C 10 12 04.52 +01 54 52.9 V G45
2017-02-03 09:09:23 C 10 12 01.77 +01 54 58.5 V G45
2017-02-03 10:15:54 C 10 11 58.45 +01 55 05.0 V G45
2017-02-03 10:16:50 C 10 11 58.39 +01 55 04.8 V G45
2017-02-03 10:25:52 C 10 11 57.95 +01 55 06.0 q G96
2017-02-03 10:32:05 C 10 11 57.65 +01 55 06.6 q G96
2017-02-03 10:38:13 C 10 11 57.35 +01 55 06.9 q G96
2017-02-03 10:44:24 C 10 11 57.04 +01 55 08.0 q G96
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)