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
2005-12-06 10:36:28 C 09 07 39.179 +14 39 52.34 e 645
2005-12-06 10:41:28 C 09 07 39.125 +14 39 52.00 21.99 e 645
2006-01-08 09:16:15 C 08 44 21.01 +14 58 06.8 r G96
2006-01-08 09:26:20 C 08 44 20.65 +14 58 07.7 r G96
2006-01-08 09:36:25 C 08 44 20.11 +14 58 08.1 r G96
2006-01-08 09:46:31 C 08 44 19.64 +14 58 09.1 r G96
2006-01-09 07:00:53 C 08 43 19.77 +14 59 58.9 d 291
2006-01-09 07:07:08 C 08 43 19.45 +14 59 59.4 d 291
2006-01-09 07:12:56 C 08 43 19.17 +14 59 59.9 d 291
2006-01-09 09:30:18 C 08 43 12.46 +15 00 11.4 r G96
2006-01-09 09:37:41 C 08 43 12.10 +15 00 12.4 r G96
2006-01-09 09:45:00 C 08 43 11.71 +15 00 13.1 r G96
2006-01-09 09:52:20 C 08 43 11.31 +15 00 14.2 r G96
2006-01-10 08:28:24 C 08 42 06.44 +15 02 13.3 r G96
2006-01-10 08:37:58 C 08 42 05.97 +15 02 13.8 r G96
2006-01-10 08:47:31 C 08 42 05.54 +15 02 14.7 r G96
2006-01-10 08:57:06 C 08 42 05.04 +15 02 15.5 r G96
2006-01-10 09:24:16 C 08 42 03.70 +15 02 18.4 r G96
2006-01-10 09:35:28 C 08 42 03.16 +15 02 19.4 r G96
2006-01-10 09:46:48 C 08 42 02.59 +15 02 19.9 r G96
2006-01-10 09:58:02 C 08 42 02.01 +15 02 21.2 r G96
2006-01-30 06:20:25 C 08 16 53.24 +15 51 54.9 c 711
2006-01-30 06:35:58 C 08 16 52.46 +15 51 56.1 c 711
2006-01-30 06:51:40 C 08 16 51.55 +15 51 58.2 c 711
2006-01-31 07:03:51 C 08 15 33.37 +15 54 34.3 r G96
2006-01-31 07:14:43 C 08 15 32.76 +15 54 35.6 r G96
2006-01-31 07:25:33 C 08 15 32.18 +15 54 36.9 r G96
2006-01-31 09:06:07 C 08 15 26.64 +15 54 47.9 r G96
2006-01-31 09:10:15 C 08 15 26.42 +15 54 48.3 r G96
2006-01-31 09:14:24 C 08 15 26.24 +15 54 48.5 r G96
2006-01-31 09:18:31 C 08 15 25.99 +15 54 49.0 r G96
2006-03-03 04:43:53 C 07 43 55.81 +16 56 47.4 r G96
2006-03-03 05:00:12 C 07 43 55.38 +16 56 48.3 r G96
2006-03-03 05:16:40 C 07 43 54.91 +16 56 48.9 r G96
2006-03-03 05:33:05 C 07 43 54.44 +16 56 49.7 r G96
2007-12-13 06:17:55 C 05 38 13.43 +29 40 12.3 19.9 c 704
2007-12-13 06:36:35 C 05 38 12.13 +29 40 09.3 20.0 c 704
2007-12-13 06:55:16 C 05 38 10.72 +29 40 07.9 20.1 c 704
2007-12-13 07:32:40 C 05 38 08.12 +29 40 00.5 20.1 c 704
2007-12-15 06:17:26 C 05 34 53.76 +29 32 41.3 19.2 c 704
2007-12-15 06:35:52 C 05 34 52.45 +29 32 38.7 19.9 c 704
2007-12-15 06:54:19 C 05 34 51.13 +29 32 35.6 19.6 c 704
2007-12-15 07:12:49 C 05 34 49.80 +29 32 33.0 19.6 c 704
2007-12-15 07:31:17 C 05 34 48.62 +29 32 29.9 19.9 c 704
2007-12-18 04:36:14 C 05 30 05.85 +29 20 47.0 o 691
2007-12-18 05:01:40 C 05 30 04.07 +29 20 42.2 o 691
2007-12-28 05:38:36 C 05 14 52.07 +28 33 33.4 o 691
2007-12-28 06:08:54 C 05 14 50.30 +28 33 26.7 o 691
2007-12-28 06:39:12 C 05 14 48.44 +28 33 21.3 o 691
2007-12-30 02:39:33 C 05 12 19.15 +28 23 59.3 o 691
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)