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
2017-02-03 11:08:16 C 10 11 55.83 +01 55 09.8 V G45
2017-02-03 11:09:55 C 10 11 55.75 +01 55 10.6 V G45
2017-02-03 11:50:47 C 10 11 53.71 +01 55 14.7 V G45
2017-02-03 11:52:51 C 10 11 53.62 +01 55 14.4 V G45
2017-02-03 12:26:09 C 10 11 51.95 +01 55 18.0 V G45
2017-02-03 12:26:18 C 10 11 51.94 +01 55 17.8 V G45
2017-02-03 12:56:00 C 10 11 50.46 +01 55 20.1 V G45
2017-02-03 12:56:08 C 10 11 50.44 +01 55 20.3 V G45
2017-02-05 03:59:56 C 10 09 54.21 +01 59 29.4 V G45
2017-02-05 08:49:48 C 10 09 39.21 +02 00 01.3 V G45
2017-02-05 08:53:15 C 10 09 39.02 +02 00 01.1 V G45
2017-02-05 09:27:25 C 10 09 37.24 +02 00 05.2 V G45
2017-02-05 09:28:14 C 10 09 37.19 +02 00 05.1 V G45
2017-02-05 10:08:30 C 10 09 35.08 +02 00 09.8 V G45
2017-02-05 10:55:15 C 10 09 32.67 +02 00 14.9 V G45
2017-02-16 15:05:14 C 09 54 48.89 +02 40 47.0 q D29
2017-02-16 15:35:22 C 09 54 47.13 +02 40 52.9 q D29
2017-02-19 03:29:30 C 09 51 17.56 +02 52 23.7 V G45
2017-02-19 04:06:06 C 09 51 15.42 +02 52 31.0 V G45
2017-02-19 04:06:16 C 09 51 15.37 +02 52 30.3 V G45
2017-02-19 04:51:06 C 09 51 12.71 +02 52 39.2 V G45
2017-02-19 04:52:02 C 09 51 12.62 +02 52 39.5 V G45
2017-02-19 05:46:52 C 09 51 09.35 +02 52 50.5 V G45
2017-02-19 05:51:09 C 09 51 09.04 +02 52 51.5 V G45
2017-02-21 02:37:12 C 09 48 31.27 +03 01 56.4 V G45
2017-02-21 03:05:41 C 09 48 29.58 +03 02 02.3 V G45
2017-02-21 05:15:14 C 09 48 21.83 +03 02 29.7 V G45
2017-02-21 06:10:15 C 09 48 18.49 +03 02 40.8 V G45
2017-02-21 07:14:23 C 09 48 14.63 +03 02 54.1 V G45
2017-02-21 07:18:22 C 09 48 14.42 +03 02 54.8 V G45
2017-02-21 10:08:09 C 09 48 04.18 +03 03 30.9 V G45
2017-02-21 11:04:22 C 09 48 00.76 +03 03 41.8 V G45
2017-02-21 11:06:35 C 09 48 00.73 +03 03 42.2 V G45
2017-02-22 03:09:41 C 09 47 04.47 +03 07 04.5 R G45
2017-02-22 03:16:36 C 09 47 04.09 +03 07 06.2 R G45
2017-02-22 03:23:23 C 09 47 03.68 +03 07 07.5 R G45
2017-02-22 03:30:20 C 09 47 03.27 +03 07 08.9 R G45
2017-02-22 03:38:42 C 09 47 02.77 +03 07 10.6 R G45
2017-02-22 05:57:04 C 09 46 54.45 +03 07 40.3 q G96
2017-02-22 06:03:15 C 09 46 54.07 +03 07 41.4 q G96
2017-02-22 06:09:29 C 09 46 53.70 +03 07 43.0 q G96
2017-02-22 06:15:39 C 09 46 53.34 +03 07 44.1 q G96
2017-02-24 05:15:50 C 09 44 07.26 +03 17 52.3 R G45
2017-02-24 05:23:15 C 09 44 06.84 +03 17 53.9 R G45
2017-02-24 05:30:59 C 09 44 06.36 +03 17 55.2 R G45
2017-02-24 05:38:22 C 09 44 05.94 +03 17 56.9 R G45
2017-02-24 05:45:39 C 09 44 05.48 +03 17 59.2 R G45
2017-02-24 06:25:17 C 09 44 03.18 +03 18 08.0 q 703
2017-02-24 06:34:25 C 09 44 02.57 +03 18 10.0 q 703
2017-02-24 06:43:34 C 09 44 02.04 +03 18 11.8 q 703
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)