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
2020-08-29 07:05:47 C 04 07 04.28 +40 15 01.8 V U55
2020-08-29 07:12:47 C 04 07 04.41 +40 15 04.2 V U55
2020-08-29 07:21:04 C 04 07 04.61 +40 15 07.5 V U55
2020-08-29 14:04:43 C 04 07 14.15 +40 17 45.9 V T08
2020-08-29 14:18:51 C 04 07 14.40 +40 17 51.5 V T08
2020-08-29 14:24:10 C 04 07 14.50 +40 17 53.2 V T08
2020-08-29 14:50:23 C 04 07 14.97 +40 18 02.9 V T08
2020-08-29 19:17:52 S 04 07 20.08 +40 19 28.1 L C51
2020-08-29 22:26:11 S 04 07 24.46 +40 20 33.6 L C51
2020-08-30 01:34:30 S 04 07 28.829 +40 21 39.17 L C51
2020-08-30 04:42:49 S 04 07 33.16 +40 22 44.6 L C51
2020-08-30 06:16:53 S 04 07 35.29 +40 23 17.0 L C51
2020-08-30 06:17:04 S 04 07 35.28 +40 23 17.1 L C51
2020-08-30 07:51:08 S 04 07 37.41 +40 23 49.6 L C51
2020-08-30 09:25:24 S 04 07 39.52 +40 24 22.3 L C51
2020-08-30 10:59:27 S 04 07 41.62 +40 24 54.6 L C51
2020-08-30 12:33:42 S 04 07 43.66 +40 25 26.7 L C51
2020-08-30 18:50:20 S 04 07 51.92 +40 27 36.0 L C51
2020-08-30 21:58:39 S 04 07 55.930 +40 28 40.76 L C51
2020-08-31 01:06:58 S 04 07 59.93 +40 29 44.2 L C51
2020-08-31 13:56:46 C 04 08 17.16 +40 34 11.1 V T05
2020-08-31 14:01:24 C 04 08 17.22 +40 34 12.8 V T05
2020-08-31 14:02:03 C 04 08 17.23 +40 34 13.0 V T05
2020-08-31 14:08:04 C 04 08 17.31 +40 34 15.2 V T05
2020-08-31 14:10:43 C 04 08 17.36 +40 34 16.2 V T05
2020-08-31 14:22:24 C 04 08 17.51 +40 34 20.2 V T05
2020-08-31 14:29:00 C 04 08 17.62 +40 34 22.7 V T05
2020-08-31 14:38:58 C 04 08 17.74 +40 34 26.0 V T05
2020-09-02 13:57:40 C 04 09 07.92 +40 49 52.6 V T08
2020-09-02 14:02:21 C 04 09 07.99 +40 49 54.1 V T08
2020-09-02 14:31:02 C 04 09 08.24 +40 50 03.9 V T08
2020-09-02 14:54:25 C 04 09 08.46 +40 50 11.4 V T08
2020-09-04 10:37:31 C 04 09 43.37 +41 03 40.4 V G96
2020-09-04 10:44:29 C 04 09 43.41 +41 03 42.5 V G96
2020-09-04 10:51:27 C 04 09 43.46 +41 03 44.8 V G96
2020-09-04 10:58:25 C 04 09 43.50 +41 03 47.1 V G96
2020-09-06 14:43:51 C 04 10 09.05 +41 19 01.7 V T08
2020-09-06 14:52:16 C 04 10 09.05 +41 19 04.3 V T08
2020-09-06 15:07:01 C 04 10 09.01 +41 19 08.6 V T08
2020-09-06 15:10:36 C 04 10 09.02 +41 19 09.6 V T08
2020-09-08 14:19:02 C 04 10 17.69 +41 32 06.6 V T05
2020-09-08 14:25:39 C 04 10 17.66 +41 32 08.3 V T05
2020-09-08 14:49:13 C 04 10 17.54 +41 32 15.0 V T05
2020-09-08 15:02:34 C 04 10 17.45 +41 32 18.4 V T05
2020-09-10 13:57:25 C 04 10 10.94 +41 44 20.7 V T08
2020-09-10 14:05:21 C 04 10 10.87 +41 44 22.7 V T08
2020-09-10 14:24:38 C 04 10 10.64 +41 44 27.9 V T08
2020-09-10 14:42:04 C 04 10 10.44 +41 44 32.2 V T08
2020-09-12 13:57:40 C 04 09 47.75 +41 55 44.2 V T05
2020-09-12 14:00:59 C 04 09 47.70 +41 55 45.0 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)