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
2022-01-24 07:46:58 C 08 43 29.526 +13 39 26.49 U F52
2022-01-24 08:01:35 C 08 43 28.724 +13 39 28.12 U F52
2022-01-24 08:16:09 C 08 43 27.939 +13 39 29.94 U F52
2022-01-24 08:30:49 C 08 43 27.141 +13 39 31.78 U F52
2022-01-26 06:45:43 C 08 40 57.82 +13 45 06.6 V G96
2022-01-26 06:56:37 C 08 40 57.23 +13 45 08.0 V G96
2022-01-26 07:04:47 C 08 40 56.77 +13 45 09.0 V G96
2022-01-26 07:12:57 C 08 40 56.31 +13 45 10.0 V G96
2022-01-30 07:48:26 C 08 35 41.756 +13 57 11.12 U F52
2022-01-30 08:04:53 C 08 35 40.843 +13 57 13.31 U F52
2022-01-30 08:21:23 C 08 35 39.924 +13 57 15.43 U F52
2022-01-30 08:37:53 C 08 35 39.007 +13 57 17.60 U F52
2022-02-01 06:14:49 C 08 33 10.03 +14 03 02.3 V G96
2022-02-01 06:23:22 C 08 33 09.55 +14 03 03.5 V G96
2022-02-01 06:31:55 C 08 33 09.07 +14 03 04.5 V G96
2022-02-01 06:40:25 C 08 33 08.60 +14 03 05.6 V G96
2022-02-05 06:16:02 C 08 27 59.04 +14 15 11.7 V G96
2022-02-05 06:24:07 C 08 27 58.60 +14 15 13.1 V G96
2022-02-05 06:32:12 C 08 27 58.17 +14 15 13.7 V G96
2022-02-05 06:40:15 C 08 27 57.72 +14 15 14.8 V G96
2022-02-06 07:58:07 C 08 26 36.982 +14 18 27.04 U F52
2022-02-06 08:25:36 C 08 26 35.495 +14 18 30.56 U F52
2022-02-06 08:39:29 C 08 26 34.734 +14 18 32.34 U F52
2022-02-27 05:54:27 C 08 03 34.208 +15 14 20.79 U F52
2022-02-27 06:10:52 C 08 03 33.604 +15 14 22.32 U F52
2022-02-27 06:27:22 C 08 03 32.989 +15 14 23.86 U F52
2022-02-27 06:43:47 C 08 03 32.366 +15 14 25.40 U F52
2022-03-01 05:39:08 C 08 01 54.090 +15 18 34.11 U F52
2022-03-01 05:57:21 C 08 01 53.446 +15 18 35.76 U F52
2022-03-01 06:15:54 C 08 01 52.806 +15 18 37.35 U F52
2022-03-01 06:34:18 C 08 01 52.170 +15 18 38.96 U F52
2023-11-12 12:39:53 C 06 47 59.360 +28 44 42.96 X F52
2023-11-12 12:51:13 C 06 47 59.000 +28 44 43.36 X F52
2023-11-12 13:02:35 C 06 47 58.627 +28 44 43.56 X F52
2023-11-12 13:14:01 C 06 47 58.247 +28 44 43.92 X F52
2023-11-23 06:57:59 C 06 37 46.538 +28 48 14.69 V G96
2023-11-23 07:05:26 C 06 37 46.139 +28 48 15.16 V G96
2023-11-23 07:12:52 C 06 37 45.790 +28 48 15.08 V G96
2023-11-23 07:20:19 C 06 37 45.430 +28 48 15.26 V G96
2023-12-03 11:24:05 C 06 24 28.811 +28 45 31.90 V G96
2023-12-03 11:38:55 C 06 24 27.896 +28 45 31.28 V G96
2023-12-03 11:46:19 C 06 24 27.454 +28 45 31.07 V G96
2023-12-14 07:39:30 C 06 07 48.929 +28 31 16.10 V G96
2023-12-14 07:47:08 C 06 07 48.414 +28 31 15.20 V G96
2023-12-14 07:54:44 C 06 07 47.892 +28 31 14.59 V G96
2024-01-03 07:33:53 C 05 37 21.004 +27 31 14.92 V G96
2024-01-03 07:42:08 C 05 37 20.532 +27 31 14.52 V G96
2024-01-03 07:50:22 C 05 37 20.068 +27 31 12.47 V G96
2024-01-03 07:58:37 C 05 37 19.614 +27 31 11.10 V G96
2024-11-18 22:15:37 C 10 28 30.756 +05 10 47.18 O18
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)