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
2020-11-23 02:20:47 C 02 12 00.41 +30 15 12.9 V V93
2020-11-23 03:37:05 C 02 11 57.63 +30 14 18.1 V V93
2020-11-23 20:34:37 C 02 11 24.53 +30 02 02.7 V 160
2020-11-23 20:38:06 C 02 11 24.38 +30 02 00.4 V 160
2020-11-23 20:41:33 C 02 11 24.30 +30 01 57.8 V 160
2020-11-24 04:29:24 C 02 11 09.75 +29 56 25.2 V 703
2020-11-24 04:37:18 C 02 11 09.46 +29 56 20.4 V 703
2020-11-24 04:45:18 C 02 11 09.19 +29 56 13.4 V 703
2020-11-24 04:53:38 C 02 11 08.97 +29 56 08.2 V 703
2020-11-29 01:21:42 C 02 08 13.31 +28 36 55.9 V V93
2020-11-29 02:47:16 C 02 08 11.45 +28 36 01.0 V V93
2020-11-29 04:09:00 C 02 08 09.63 +28 35 08.5 V V93
2020-11-29 20:56:11 C 02 07 50.82 +28 24 25.7 V 160
2020-11-29 20:59:36 C 02 07 50.78 +28 24 23.0 V 160
2020-11-29 21:03:03 C 02 07 50.74 +28 24 21.7 V 160
2020-11-30 20:36:59 C 02 07 27.02 +28 09 36.2 V 160
2020-11-30 20:40:27 C 02 07 26.88 +28 09 32.9 V 160
2020-11-30 20:43:56 C 02 07 26.80 +28 09 30.5 V 160
2020-12-02 07:10:20 C 02 06 56.97 +27 48 37.3 V 703
2020-12-02 07:18:11 C 02 06 56.82 +27 48 31.9 V 703
2020-12-02 07:26:02 C 02 06 56.67 +27 48 28.5 V 703
2020-12-02 07:33:53 C 02 06 56.57 +27 48 22.9 V 703
2020-12-02 10:11:27 C 02 06 54.62 +27 46 51.7 V T08
2020-12-02 10:16:06 C 02 06 54.53 +27 46 48.9 V T08
2020-12-02 10:20:44 C 02 06 54.51 +27 46 45.5 V T08
2020-12-02 10:26:04 C 02 06 54.43 +27 46 42.4 V T08
2020-12-02 10:26:43 C 02 06 54.43 +27 46 41.6 V T08
2020-12-02 10:38:40 C 02 06 54.23 +27 46 34.5 V T08
2020-12-02 10:42:39 C 02 06 54.19 +27 46 32.3 V T08
2020-12-02 10:53:18 C 02 06 54.01 +27 46 25.6 V T08
2020-12-03 07:28:32 C 02 06 39.77 +27 34 18.1 V G96
2020-12-03 07:35:56 C 02 06 39.65 +27 34 13.9 V G96
2020-12-03 07:43:20 C 02 06 39.57 +27 34 09.2 V G96
2020-12-03 07:50:45 C 02 06 39.48 +27 34 05.2 V G96
2020-12-04 10:04:43 C 02 06 24.36 +27 19 05.7 V T05
2020-12-04 10:10:40 C 02 06 24.30 +27 19 02.5 V T05
2020-12-04 10:19:53 C 02 06 24.21 +27 18 57.5 V T05
2020-12-04 10:34:27 C 02 06 24.08 +27 18 48.7 V T05
2020-12-05 05:33:10 C 02 06 15.54 +27 08 12.4 V 703
2020-12-05 05:40:49 C 02 06 15.43 +27 08 07.8 V 703
2020-12-05 05:48:27 C 02 06 15.40 +27 08 04.1 V 703
2020-12-05 05:56:03 C 02 06 15.31 +27 08 00.5 V 703
2020-12-07 05:25:09 C 02 06 01.320 +26 42 32.19 U F51
2020-12-07 05:44:26 C 02 06 01.213 +26 42 22.27 U F51
2020-12-07 06:02:59 C 02 06 01.110 +26 42 12.68 U F51
2020-12-07 06:03:55 C 02 06 01.101 +26 42 12.25 U F51
2020-12-07 06:22:17 C 02 06 00.999 +26 42 02.76 U F51
2020-12-07 06:23:14 C 02 06 00.991 +26 42 02.28 U F51
2020-12-08 07:23:52 C 02 05 57.47 +26 29 12.7 V T05
2020-12-08 07:28:30 C 02 05 57.46 +26 29 10.2 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)