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
2007-12-30 03:09:50 C 05 12 17.37 +28 23 53.6 o 691
2007-12-30 03:44:24 C 05 12 15.45 +28 23 45.9 o 691
2008-01-01 03:17:06 C 05 09 41.06 +28 13 32.7 o 691
2008-01-01 03:36:06 C 05 09 40.00 +28 13 29.2 o 691
2008-01-03 03:10:44 C 05 07 13.32 +28 03 11.0 o 691
2008-01-03 03:33:35 C 05 07 12.15 +28 03 06.3 o 691
2008-01-03 03:56:26 C 05 07 10.98 +28 03 01.3 o 691
2008-01-11 01:51:16 C 04 58 50.56 +27 22 10.9 o 691
2008-01-11 02:10:14 C 04 58 49.81 +27 22 06.8 o 691
2008-01-11 02:29:14 C 04 58 49.08 +27 22 03.0 o 691
2008-01-14 02:21:29 C 04 56 16.87 +27 07 08.5 o 691
2008-01-14 02:33:15 C 04 56 16.46 +27 07 05.9 o 691
2008-01-14 02:45:00 C 04 56 16.10 +27 07 02.8 o 691
2008-02-12 04:40:09 C 04 48 34.81 +25 17 27.9 r G96
2008-02-12 04:53:00 C 04 48 34.88 +25 17 26.9 r G96
2008-02-12 05:05:51 C 04 48 35.02 +25 17 24.9 r G96
2008-02-12 05:18:48 C 04 48 35.13 +25 17 24.1 r G96
2009-02-02 08:14:55 C 10 01 32.16 +03 25 35.3 r 703
2009-02-02 08:22:50 C 10 01 31.72 +03 25 37.1 r 703
2009-02-02 08:30:40 C 10 01 31.26 +03 25 38.4 r 703
2009-02-02 08:38:29 C 10 01 30.86 +03 25 39.1 r 703
2009-02-18 06:40:08 C 09 40 29.34 +04 26 16.0 19.6 c 704
2009-02-18 06:57:16 C 09 40 28.40 +04 26 18.9 19.8 c 704
2009-02-18 07:15:10 C 09 40 27.33 +04 26 20.9 19.8 c 704
2009-02-18 07:37:25 C 09 40 26.04 +04 26 26.1 19.3 c 704
2009-02-26 05:55:56 C 09 29 28.89 +05 06 25.5 r 703
2009-02-26 06:07:31 C 09 29 28.17 +05 06 28.1 r 703
2009-02-26 06:18:57 C 09 29 27.60 +05 06 30.0 r 703
2009-02-26 06:30:29 C 09 29 26.95 +05 06 32.3 r 703
2009-03-19 04:30:44 C 09 05 21.19 +06 54 42.1 20.0 c 704
2009-03-19 04:47:25 C 09 05 20.52 +06 54 47.7 20.3 c 704
2009-03-19 05:04:12 C 09 05 19.87 +06 54 51.8 20.1 c 704
2009-03-19 05:21:02 C 09 05 19.24 +06 54 53.8 20.1 c 704
2010-12-01 10:51:25 C 07 56 49.15 +22 14 53.4 o 691
2010-12-01 11:17:00 C 07 56 48.37 +22 14 53.7 o 691
2010-12-01 11:42:32 C 07 56 47.64 +22 14 54.2 o 691
2010-12-09 09:24:02 C 07 50 31.68 +22 20 13.4 o 691
2010-12-09 09:49:39 C 07 50 30.64 +22 20 14.3 o 691
2010-12-09 10:54:39 C 07 50 28.17 +22 20 16.6 o 691
2010-12-13 09:48:50 C 07 46 38.11 +22 23 51.8 o 691
2010-12-13 10:14:28 C 07 46 36.99 +22 23 52.8 o 691
2010-12-13 10:40:07 C 07 46 35.84 +22 23 54.0 o 691
2011-01-02 04:48:26 C 07 22 13.26 +22 43 01.8 r G96
2011-01-02 05:02:37 C 07 22 12.46 +22 43 01.5 r G96
2011-01-02 05:16:43 C 07 22 11.67 +22 43 01.8 r G96
2011-01-02 05:30:54 C 07 22 10.77 +22 43 03.4 r G96
2011-01-08 08:26:15 C 07 13 41.29 +22 46 57.0 o 691
2011-01-08 08:51:49 C 07 13 39.77 +22 46 58.0 o 691
2011-12-04 14:22:32 C 11 53 49.694 -06 07 02.56 L F51
2011-12-04 14:29:11 C 11 53 50.038 -06 07 05.92 L F51
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)