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
2020-10-16 11:14:19 C 03 20 22.46 +41 10 33.7 V T08
2020-10-16 11:16:59 C 03 20 22.16 +41 10 32.6 V T08
2020-10-16 11:21:38 C 03 20 21.70 +41 10 30.5 V T08
2020-10-16 11:28:55 C 03 20 20.93 +41 10 27.4 V T08
2020-10-18 06:01:40 C 03 16 08.38 +40 50 38.3 o W92
2020-10-18 06:09:38 C 03 16 07.55 +40 50 33.8 o W92
2020-10-18 12:06:36 C 03 15 32.08 +40 47 27.6 V T05
2020-10-18 12:11:55 C 03 15 31.54 +40 47 25.3 V T05
2020-10-18 12:58:14 C 03 15 26.64 +40 47 01.4 V T05
2020-10-19 07:08:06 C 03 13 39.05 +40 37 42.0 V 703
2020-10-19 07:15:50 C 03 13 38.28 +40 37 38.2 V 703
2020-10-19 07:23:32 C 03 13 37.47 +40 37 34.0 V 703
2020-10-19 07:31:14 C 03 13 36.61 +40 37 30.3 V 703
2020-10-20 10:05:01 C 03 10 58.07 +40 23 21.4 V T08
2020-10-20 10:09:41 C 03 10 57.58 +40 23 19.0 V T08
2020-10-20 10:17:40 C 03 10 56.76 +40 23 14.7 V T08
2020-10-20 10:30:55 C 03 10 55.37 +40 23 07.5 V T08
2020-10-22 07:13:49 C 03 06 28.72 +39 57 30.8 V G96
2020-10-22 07:21:21 C 03 06 27.95 +39 57 26.5 V G96
2020-10-22 07:28:51 C 03 06 27.17 +39 57 22.1 V G96
2020-10-22 07:36:21 C 03 06 26.38 +39 57 17.7 V G96
2020-10-22 09:44:50 C 03 06 13.95 +39 56 03.4 V T05
2020-10-22 09:52:06 C 03 06 13.17 +39 55 59.2 V T05
2020-10-22 09:55:30 C 03 06 12.84 +39 55 57.2 V T05
2020-10-22 10:11:28 C 03 06 11.18 +39 55 47.9 V T05
2020-10-23 06:23:27 C 03 04 11.57 +39 43 29.1 V 703
2020-10-23 06:31:01 C 03 04 10.76 +39 43 24.9 V 703
2020-10-23 06:38:36 C 03 04 10.02 +39 43 20.5 V 703
2020-10-23 06:46:10 C 03 04 09.21 +39 43 16.0 V 703
2020-10-23 22:42:35 C 03 02 34.67 +39 33 18.8 o L52
2020-10-24 02:00:54 C 03 02 14.59 +39 31 07.9 o L52
2020-10-24 11:17:45 C 03 01 20.79 +39 25 22.3 V T08
2020-10-24 11:21:50 C 03 01 20.37 +39 25 19.6 V T08
2020-10-24 11:31:14 C 03 01 19.40 +39 25 13.6 V T08
2020-10-24 11:45:55 C 03 01 17.89 +39 25 04.1 V T08
2020-10-25 11:55:07 C 02 58 56.926 +39 09 16.94 U F52
2020-10-25 12:10:01 C 02 58 55.415 +39 09 06.91 U F52
2020-10-25 12:24:54 C 02 58 53.904 +39 08 56.88 U F52
2020-10-25 12:39:47 C 02 58 52.393 +39 08 46.78 U F52
2020-10-26 10:54:33 C 02 56 44.44 +38 53 48.5 V T05
2020-10-26 10:59:11 C 02 56 43.98 +38 53 45.5 V T05
2020-10-26 11:06:39 C 02 56 43.22 +38 53 40.3 V T05
2020-10-26 11:25:29 C 02 56 41.34 +38 53 27.4 V T05
2020-10-28 05:52:35 C 02 52 40.95 +38 23 42.6 V 703
2020-10-28 06:00:13 C 02 52 40.27 +38 23 37.9 V 703
2020-10-28 06:07:50 C 02 52 39.51 +38 23 32.0 V 703
2020-10-28 06:15:28 C 02 52 38.75 +38 23 27.1 V 703
2020-11-01 01:00:10 C 02 44 26.15 +37 15 55.3 V J27
2020-11-01 01:08:36 C 02 44 25.39 +37 15 48.7 V J27
2020-11-01 01:12:25 C 02 44 25.02 +37 15 45.7 V J27
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)