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
2020-09-12 14:04:59 C 04 09 47.64 +41 55 46.1 V T05
2020-09-12 14:12:54 C 04 09 47.51 +41 55 47.8 V T05
2020-09-14 13:22:10 C 04 09 08.36 +42 06 00.5 V T08
2020-09-14 13:26:48 C 04 09 08.27 +42 06 01.4 V T08
2020-09-14 13:34:07 C 04 09 08.08 +42 06 03.1 V T08
2020-09-14 13:51:08 C 04 09 07.70 +42 06 06.8 V T08
2020-09-14 15:22:41 C 04 09 05.56 +42 06 26.2 V T08
2020-09-20 00:21:57 C 04 05 48.38 +42 28 29.7 o L52
2020-09-20 00:43:25 C 04 05 47.63 +42 28 33.1 o L52
2020-09-21 01:20:07 C 04 04 54.73 +42 31 42.5 o L52
2020-09-21 01:31:05 C 04 04 54.28 +42 31 44.1 o L52
2020-09-26 11:27:45 C 03 58 56.48 +42 41 59.3 V T08
2020-09-26 11:35:05 C 03 58 56.04 +42 41 59.7 V T08
2020-09-26 11:47:47 C 03 58 55.29 +42 42 00.4 V T08
2020-09-26 12:06:13 C 03 58 54.18 +42 42 01.4 V T08
2020-09-28 13:03:11 C 03 56 04.38 +42 42 39.8 V T05
2020-09-28 13:07:10 C 03 56 04.10 +42 42 39.8 V T05
2020-09-28 13:12:27 C 03 56 03.76 +42 42 39.8 V T05
2020-09-28 13:23:42 C 03 56 03.00 +42 42 39.7 V T05
2020-09-28 15:17:08 C 03 55 55.41 +42 42 38.2 V T05
2020-09-30 06:47:34 C 03 53 26.40 +42 41 32.6 V G96
2020-09-30 06:55:05 C 03 53 25.89 +42 41 32.5 V G96
2020-09-30 07:02:35 C 03 53 25.36 +42 41 32.4 V G96
2020-09-30 07:10:06 C 03 53 24.84 +42 41 32.4 V G96
2020-09-30 12:44:48 C 03 53 01.99 +42 41 24.2 V T08
2020-09-30 13:17:42 C 03 52 59.60 +42 41 23.2 V T08
2020-09-30 13:21:01 C 03 52 59.36 +42 41 22.9 V T08
2020-09-30 13:25:01 C 03 52 59.09 +42 41 22.7 V T08
2020-10-04 11:27:26 C 03 46 12.26 +42 32 54.4 V T08
2020-10-04 11:31:28 C 03 46 11.94 +42 32 54.2 V T08
2020-10-04 11:35:26 C 03 46 11.59 +42 32 53.7 V T08
2020-10-04 11:45:31 C 03 46 10.75 +42 32 52.5 V T08
2020-10-06 15:07:23 C 03 42 02.62 +42 24 38.9 V T05
2020-10-06 15:12:05 C 03 42 02.20 +42 24 37.6 V T05
2020-10-06 15:16:11 C 03 42 01.84 +42 24 36.8 V T05
2020-10-06 15:20:51 C 03 42 01.44 +42 24 35.8 V T05
2020-10-08 12:04:09 C 03 38 14.81 +42 15 16.3 V T08
2020-10-08 12:05:28 C 03 38 14.72 +42 15 15.4 V T08
2020-10-08 12:50:23 C 03 38 10.54 +42 15 05.3 V T08
2020-10-10 13:12:05 C 03 33 52.39 +42 02 30.3 V T05
2020-10-10 14:01:19 C 03 33 47.66 +42 02 15.9 V T05
2020-10-10 14:42:12 C 03 33 43.74 +42 02 03.4 V T05
2020-10-10 14:46:17 C 03 33 43.35 +42 02 02.1 V T05
2020-10-14 11:29:53 C 03 25 01.68 +41 30 32.9 V T05
2020-10-14 11:35:13 C 03 25 01.14 +41 30 31.1 V T05
2020-10-14 11:39:11 C 03 25 00.74 +41 30 29.2 V T05
2020-10-16 07:10:17 C 03 20 46.71 +41 12 18.0 V 703
2020-10-16 07:17:46 C 03 20 45.95 +41 12 14.7 V 703
2020-10-16 07:25:15 C 03 20 45.18 +41 12 11.5 V 703
2020-10-16 07:32:45 C 03 20 44.40 +41 12 08.3 V 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)