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
2012-10-15 08:02:30 C 02 01 20.09 +42 06 19.4 16.8 c 704
2012-10-20 10:20:14 C 01 50 47.93 +39 55 18.0 u D95
2012-10-20 10:25:30 C 01 50 47.46 +39 55 12.0 u D95
2012-10-20 10:27:36 C 01 50 47.36 +39 55 09.8 u D95
2012-10-25 06:56:49 C 01 42 19.65 +37 46 28.0 r 703
2012-10-25 07:09:02 C 01 42 18.75 +37 46 14.4 r 703
2012-10-25 07:20:47 C 01 42 17.96 +37 46 01.2 r 703
2012-10-25 07:32:34 C 01 42 17.06 +37 45 47.9 r 703
2012-11-03 07:41:16 c 01 30 57.797 +33 51 51.04 L F51
2012-11-03 07:57:37 c 01 30 57.070 +33 51 34.24 L F51
2012-11-05 09:00:38 C 01 29 06.86 +33 01 11.7 r 703
2012-11-05 09:09:35 C 01 29 06.50 +33 01 02.7 r 703
2012-11-05 09:18:30 C 01 29 06.18 +33 00 53.4 r 703
2012-11-05 09:27:19 C 01 29 05.85 +33 00 44.3 r 703
2012-11-12 04:52:59 C 01 24 53.92 +30 24 41.5 r 703
2012-11-12 05:03:17 C 01 24 53.71 +30 24 32.4 r 703
2012-11-12 05:13:31 C 01 24 53.49 +30 24 23.5 r 703
2012-11-12 05:23:42 C 01 24 53.28 +30 24 13.8 r 703
2012-11-17 02:47:20 C 01 23 28.89 +28 44 43.8 r 703
2012-11-17 02:56:03 C 01 23 28.78 +28 44 37.0 r 703
2012-11-17 03:04:50 C 01 23 28.68 +28 44 30.0 r 703
2012-11-17 03:13:38 C 01 23 28.57 +28 44 22.9 r 703
2012-11-20 03:33:33 C 01 23 12.51 +27 48 48.4 r 703
2012-11-20 03:41:36 C 01 23 12.51 +27 48 42.9 r 703
2012-11-20 03:49:44 C 01 23 12.44 +27 48 36.8 r 703
2012-11-20 03:57:50 C 01 23 12.44 +27 48 31.3 r 703
2012-12-01 01:23:25 C 01 25 29.76 +25 03 52.0 u H21
2012-12-01 01:30:01 C 01 25 29.86 +25 03 48.7 u H21
2012-12-01 01:36:38 C 01 25 29.97 +25 03 45.2 u H21
2012-12-01 01:44:08 C 01 25 30.06 +25 03 41.2 u H21
2012-12-03 22:27:02 C 01 26 48.72 +24 29 19.9 c A24
2012-12-03 22:28:05 C 01 26 48.77 +24 29 19.6 c A24
2012-12-03 22:30:10 C 01 26 48.81 +24 29 19.4 c A24
2012-12-04 22:30:48 C 01 27 20.10 +24 18 08.5 c A24
2012-12-04 22:31:50 C 01 27 20.09 +24 18 07.7 c A24
2012-12-04 22:32:53 C 01 27 20.11 +24 18 07.9 c A24
2012-12-04 22:33:55 C 01 27 20.12 +24 18 07.1 c A24
2012-12-05 23:05:02 C 01 27 53.89 +24 07 07.3 c A24
2012-12-05 23:06:04 C 01 27 53.91 +24 07 07.2 c A24
2012-12-05 23:07:06 C 01 27 53.82 +24 07 05.8 c A24
2012-12-05 23:08:08 C 01 27 53.89 +24 07 05.6 c A24
2012-12-09 20:00:39 C 01 30 18.49 +23 29 14.8 c A24
2012-12-09 20:02:43 C 01 30 18.55 +23 29 14.0 c A24
2012-12-09 20:51:57 C 01 30 19.88 +23 28 55.3 c A24
2012-12-09 21:44:27 C 01 30 21.21 +23 28 35.2 c A24
2012-12-09 22:32:58 C 01 30 22.52 +23 28 17.0 c A24
2012-12-09 22:35:03 C 01 30 22.62 +23 28 15.9 c A24
2012-12-09 22:55:12 C 01 30 23.20 +23 28 07.8 c A24
2012-12-09 23:38:05 C 01 30 24.29 +23 27 51.6 c A24
2012-12-09 23:40:10 C 01 30 24.35 +23 27 50.6 c A24
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)