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
2020-08-08 11:49:40 C 03 47 11.02 +36 28 17.9 V T08
2020-08-08 12:20:40 C 03 47 12.48 +36 28 37.5 V T08
2020-08-08 12:29:58 C 03 47 12.87 +36 28 43.2 V T08
2020-08-09 10:38:47 C 03 48 17.27 +36 41 15.1 V G96
2020-08-09 10:45:40 C 03 48 17.58 +36 41 19.2 V G96
2020-08-09 10:52:34 C 03 48 17.87 +36 41 23.2 V G96
2020-08-09 10:59:28 C 03 48 18.18 +36 41 27.3 V G96
2020-08-10 03:06:18 C 03 49 04.89 +36 50 20.9 V 160
2020-08-10 03:09:19 C 03 49 05.02 +36 50 22.8 V 160
2020-08-10 03:12:23 C 03 49 05.14 +36 50 25.1 V 160
2020-08-11 13:47:43 C 03 50 45.43 +37 09 15.2 V T05
2020-08-11 14:02:19 C 03 50 46.06 +37 09 23.4 V T05
2020-08-11 14:17:11 C 03 50 46.69 +37 09 31.9 V T05
2020-08-11 14:29:07 C 03 50 47.19 +37 09 38.7 V T05
2020-08-13 14:28:05 C 03 53 03.11 +37 34 35.4 V T08
2020-08-13 14:42:31 C 03 53 03.70 +37 34 43.2 V T08
2020-08-13 14:51:55 C 03 53 04.08 +37 34 48.2 V T08
2020-08-13 14:58:25 C 03 53 04.36 +37 34 51.6 V T08
2020-08-17 14:03:46 C 03 57 20.71 +38 20 58.2 V T08
2020-08-17 14:11:44 C 03 57 21.00 +38 21 02.2 V T08
2020-08-17 14:31:32 C 03 57 21.73 +38 21 11.8 V T08
2020-08-17 14:49:45 C 03 57 22.41 +38 21 20.7 V T08
2020-08-19 14:01:34 C 03 59 20.92 +38 42 42.4 V T05
2020-08-19 14:16:10 C 03 59 21.45 +38 42 49.1 V T05
2020-08-19 14:22:00 C 03 59 21.65 +38 42 52.2 V T05
2020-08-21 02:28:26 C 04 00 47.32 +38 58 27.2 V 160
2020-08-21 02:31:24 C 04 00 47.43 +38 58 28.5 V 160
2020-08-21 02:34:24 C 04 00 47.52 +38 58 29.9 V 160
2020-08-21 14:27:02 C 04 01 14.67 +39 03 41.5 V T08
2020-08-21 14:31:40 C 04 01 14.84 +39 03 43.6 V T08
2020-08-21 14:48:24 C 04 01 15.38 +39 03 51.1 V T08
2020-08-21 15:01:38 C 04 01 15.79 +39 03 56.8 V T08
2020-08-22 02:38:40 C 04 01 42.10 +39 08 41.2 V 160
2020-08-22 02:41:44 C 04 01 42.18 +39 08 42.5 V 160
2020-08-22 02:44:51 C 04 01 42.27 +39 08 43.9 V 160
2020-08-23 02:33:43 C 04 02 34.20 +39 18 34.8 V 160
2020-08-23 02:36:39 C 04 02 34.30 +39 18 36.1 V 160
2020-08-23 02:39:34 C 04 02 34.39 +39 18 37.2 V 160
2020-08-25 13:16:27 C 04 04 32.73 +39 42 01.7 V T08
2020-08-25 13:23:04 C 04 04 32.92 +39 42 04.6 V T08
2020-08-25 13:31:42 C 04 04 33.14 +39 42 08.0 V T08
2020-08-25 13:49:41 C 04 04 33.64 +39 42 15.6 V T08
2020-08-27 10:49:30 C 04 05 54.02 +39 59 12.6 V 703
2020-08-27 10:57:41 C 04 05 54.20 +39 59 15.7 V 703
2020-08-27 11:05:53 C 04 05 54.39 +39 59 19.2 V 703
2020-08-27 11:14:08 C 04 05 54.57 +39 59 22.0 V 703
2020-08-27 13:44:23 C 04 05 59.02 +40 00 20.3 V T05
2020-08-27 13:59:30 C 04 05 59.36 +40 00 26.5 V T05
2020-08-27 14:04:09 C 04 05 59.46 +40 00 28.4 V T05
2020-08-27 14:12:46 C 04 05 59.64 +40 00 31.6 V T05
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)