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
2020-11-02 01:07:09 C 02 42 21.50 +36 57 13.2 V J27
2020-11-02 01:12:23 C 02 42 21.02 +36 57 09.2 V J27
2020-11-02 01:15:33 C 02 42 20.74 +36 57 06.7 V J27
2020-11-02 03:57:23 C 02 42 07.68 +36 54 59.5 V V93
2020-11-02 04:25:44 C 02 42 05.14 +36 54 37.7 V V93
2020-11-02 05:00:14 C 02 42 02.10 +36 54 11.5 V V93
2020-11-03 02:07:10 C 02 40 16.19 +36 37 33.7 V W34
2020-11-03 02:23:21 C 02 40 14.82 +36 37 21.1 V W34
2020-11-03 02:40:51 C 02 40 13.33 +36 37 07.6 V W34
2020-11-03 04:52:22 C 02 40 02.02 +36 35 23.7 V V93
2020-11-03 05:59:47 C 02 39 56.25 +36 34 30.3 V V93
2020-11-03 06:51:10 C 02 39 51.81 +36 33 49.0 V V93
2020-11-04 11:41:43 C 02 37 30.85 +36 10 53.3 V T08
2020-11-04 11:45:45 C 02 37 30.57 +36 10 50.0 V T08
2020-11-04 11:59:19 C 02 37 29.39 +36 10 38.3 V T08
2020-11-04 12:17:46 C 02 37 27.83 +36 10 23.4 V T08
2020-11-06 02:04:36 C 02 34 31.76 +35 39 46.7 V V93
2020-11-06 02:47:39 C 02 34 28.38 +35 39 12.5 V V93
2020-11-06 03:28:07 C 02 34 25.18 +35 38 40.6 V V93
2020-11-06 16:53:58 C 02 33 23.49 +35 27 46.8 q D29
2020-11-06 17:14:20 C 02 33 21.89 +35 27 30.2 q D29
2020-11-06 17:34:41 C 02 33 20.30 +35 27 13.2 q D29
2020-11-07 03:16:46 C 02 32 37.88 +35 19 16.5 V V93
2020-11-07 04:11:59 C 02 32 33.62 +35 18 32.2 V V93
2020-11-07 05:05:32 C 02 32 29.48 +35 17 48.8 V V93
2020-11-07 22:01:51 C 02 31 15.37 +35 03 56.8 V 160
2020-11-07 22:04:47 C 02 31 15.15 +35 03 54.3 V 160
2020-11-07 22:07:41 C 02 31 14.94 +35 03 51.8 V 160
2020-11-07 23:24:38 C 02 31 09.16 +35 02 48.5 V 130
2020-11-07 23:27:30 C 02 31 08.93 +35 02 46.2 V 130
2020-11-07 23:30:23 C 02 31 08.75 +35 02 43.8 V 130
2020-11-07 23:32:32 C 02 31 08.57 +35 02 42.1 V 130
2020-11-09 11:21:20 C 02 28 37.616 +34 33 23.85 U F51
2020-11-09 11:37:12 C 02 28 36.474 +34 33 10.56 U F51
2020-11-09 11:53:06 C 02 28 35.331 +34 32 57.35 U F51
2020-11-09 12:09:00 C 02 28 34.201 +34 32 43.99 U F51
2020-11-10 07:05:47 C 02 27 17.89 +34 17 12.8 V 703
2020-11-10 07:28:38 C 02 27 16.62 +34 16 50.1 V 703
2020-11-10 12:08:28 C 02 26 57.79 +34 13 01.5 V T05
2020-11-10 12:13:48 C 02 26 57.41 +34 12 57.2 V T05
2020-11-10 12:21:10 C 02 26 56.91 +34 12 50.8 V T05
2020-11-10 12:42:45 C 02 26 55.44 +34 12 32.9 V T05
2020-11-10 17:27:23 C 02 26 37.04 +34 08 37.6 q D29
2020-11-10 17:45:11 C 02 26 35.83 +34 08 22.7 q D29
2020-11-10 18:03:00 C 02 26 34.62 +34 08 07.7 q D29
2020-11-10 21:23:34 C 02 26 22.26 +34 05 22.7 q K73
2020-11-10 21:32:47 C 02 26 21.63 +34 05 14.9 q K73
2020-11-10 21:40:56 C 02 26 21.16 +34 05 07.9 V 160
2020-11-10 21:43:52 C 02 26 20.96 +34 05 05.6 V 160
2020-11-10 21:46:50 C 02 26 20.79 +34 05 03.0 V 160
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)