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
2017-02-24 06:52:43 C 09 44 01.43 +03 18 13.5 q 703
2017-02-26 03:54:02 C 09 41 23.39 +03 28 14.2 R G45
2017-02-26 04:00:59 C 09 41 22.97 +03 28 15.2 R G45
2017-02-26 04:08:08 C 09 41 22.53 +03 28 17.5 R G45
2017-02-26 04:15:40 C 09 41 22.07 +03 28 18.9 R G45
2017-02-26 04:22:36 C 09 41 21.63 +03 28 20.6 R G45
2017-02-26 13:38:41 C 09 40 49.19 +03 30 25.9 q D29
2017-02-26 14:07:57 C 09 40 47.47 +03 30 33.2 q D29
2017-02-26 14:37:14 C 09 40 45.70 +03 30 39.1 q D29
2017-02-27 08:36:38 C 09 39 42.977 +03 34 45.86 L F51
2017-02-27 08:52:54 C 09 39 42.011 +03 34 49.54 L F51
2017-02-27 09:09:12 C 09 39 41.037 +03 34 53.25 L F51
2017-03-02 05:11:16 C 09 35 46.68 +03 50 36.9 R G45
2017-03-02 05:18:44 C 09 35 46.25 +03 50 38.5 R G45
2017-03-02 05:33:42 C 09 35 45.37 +03 50 42.3 R G45
2017-03-02 05:40:54 C 09 35 44.95 +03 50 43.7 R G45
2017-03-02 05:47:33 C 09 35 44.65 +03 50 45.7 q 703
2017-03-02 05:48:34 C 09 35 44.51 +03 50 45.8 R G45
2017-03-02 05:54:55 C 09 35 44.23 +03 50 48.4 q 703
2017-03-02 06:02:15 C 09 35 43.78 +03 50 49.2 q 703
2017-03-02 06:09:35 C 09 35 43.22 +03 50 50.5 q 703
2017-03-02 14:16:22 C 09 35 15.82 +03 52 44.8 q D29
2017-03-02 14:41:36 C 09 35 14.33 +03 52 50.7 q D29
2017-03-04 07:59:17 C 09 32 55.613 +04 02 36.06 L F51
2017-03-04 08:18:41 C 09 32 54.503 +04 02 40.74 L F51
2017-03-04 08:38:07 C 09 32 53.397 +04 02 45.28 L F51
2017-03-27 13:15:44 C 09 08 35.37 +06 06 55.0 q D29
2017-03-27 13:37:22 C 09 08 34.71 +06 06 58.5 q D29
2017-03-27 13:59:00 C 09 08 34.01 +06 07 03.7 q D29
2017-03-31 07:16:29 C 09 06 15.401 +06 23 12.01 L F51
2017-03-31 07:34:23 C 09 06 14.959 +06 23 15.08 L F51
2017-03-31 07:52:17 C 09 06 14.517 +06 23 18.17 L F51
2018-12-12 14:38:30 C 07 56 17.782 +21 36 12.41 U F51
2018-12-12 14:54:23 C 07 56 17.135 +21 36 13.02 U F51
2018-12-12 15:09:47 C 07 56 16.526 +21 36 13.50 U F51
2018-12-12 15:25:10 C 07 56 15.909 +21 36 14.05 U F51
2018-12-14 13:28:39 C 07 54 24.921 +21 38 05.75 U F51
2018-12-14 13:48:18 C 07 54 24.080 +21 38 06.46 U F51
2018-12-14 14:08:25 C 07 54 23.221 +21 38 07.32 U F51
2018-12-14 14:28:14 C 07 54 22.390 +21 38 08.12 U F51
2018-12-31 08:48:09 C 07 34 34.69 +21 56 57.7 V G96
2018-12-31 08:55:38 C 07 34 34.26 +21 56 57.9 V G96
2018-12-31 09:08:07 C 07 34 33.57 +21 56 58.4 V G96
2018-12-31 09:15:35 C 07 34 33.11 +21 56 58.9 V G96
2019-01-03 12:50:43 C 07 30 19.332 +22 00 18.14 U F51
2019-01-03 13:08:23 C 07 30 18.312 +22 00 18.80 U F51
2019-01-03 13:26:02 C 07 30 17.301 +22 00 19.56 U F51
2019-01-08 07:13:10 C 07 23 48.30 +22 04 41.1 V G96
2019-01-08 07:20:29 C 07 23 47.86 +22 04 41.8 V G96
2019-01-08 07:27:47 C 07 23 47.44 +22 04 41.8 V G96
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)