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
2012-08-20 02:54:34 C 04 14 24.83 +50 08 03.6 u 160
2012-08-20 19:44:30 C 04 12 38.12 +50 09 45.0 r 168
2012-08-20 21:09:06 C 04 12 29.25 +50 10 00.1 r 168
2012-08-20 22:27:46 C 04 12 20.82 +50 10 13.9 r 168
2012-08-28 01:50:00 C 03 56 26.09 +50 23 39.9 c A24
2012-08-28 01:51:02 C 03 56 26.00 +50 23 40.1 c A24
2012-08-28 02:56:01 C 03 56 19.95 +50 23 45.8 c A24
2012-08-28 02:57:04 C 03 56 19.86 +50 23 45.8 c A24
2012-08-29 01:19:27 C 03 54 26.84 +50 24 33.3 c A24
2012-08-29 01:20:29 C 03 54 26.76 +50 24 33.4 c A24
2012-08-29 02:25:46 C 03 54 20.79 +50 24 38.8 c A24
2012-08-29 02:26:48 C 03 54 20.70 +50 24 39.0 c A24
2012-09-20 22:12:25 C 03 04 21.86 +49 13 23.5 r 168
2012-09-20 22:17:11 C 03 04 21.34 +49 13 21.8 r 168
2012-09-20 23:24:50 C 03 04 13.71 +49 12 56.8 r 168
2012-09-20 23:29:40 C 03 04 13.17 +49 12 54.9 r 168
2012-09-30 11:12:06 c 02 39 00.505 +47 15 48.14 L F51
2012-09-30 11:31:12 c 02 38 58.188 +47 15 35.89 L F51
2012-10-01 11:55:27 c 02 36 13.281 +46 59 05.68 L F51
2012-10-01 12:13:47 c 02 36 11.057 +46 58 53.08 L F51
2012-10-02 22:35:36 C 02 32 21.01 +46 34 09.5 u A13
2012-10-02 22:59:17 C 02 32 18.22 +46 33 51.8 u A13
2012-10-06 02:15:04 C 02 23 57.73 +45 35 05.2 u I56
2012-10-06 02:17:06 C 02 23 57.52 +45 35 03.4 u I56
2012-10-06 02:19:07 C 02 23 57.27 +45 35 01.5 u I56
2012-10-07 23:50:36 C 02 19 03.51 +44 56 11.7 u G40
2012-10-07 23:52:53 C 02 19 03.19 +44 56 10.0 w G40
2012-10-08 00:18:31 C 02 19 00.33 +44 55 48.1 u G40
2012-10-08 00:19:35 C 02 19 00.23 +44 55 47.1 u G40
2012-10-08 00:20:57 C 02 19 00.06 +44 55 46.2 w G40
2012-10-08 00:48:44 C 02 18 56.92 +44 55 22.4 u G40
2012-10-08 00:49:48 C 02 18 56.79 +44 55 21.3 u G40
2012-10-08 00:51:01 C 02 18 56.64 +44 55 20.3 w G40
2012-10-09 11:17:21 c 02 15 17.564 +44 24 27.79 L F51
2012-10-09 11:52:31 c 02 15 13.604 +44 23 55.50 L F51
2012-10-09 12:11:19 c 02 15 11.491 +44 23 38.10 L F51
2012-10-10 07:12:32 C 02 13 13.66 +44 05 55.7 17.0 c 704
2012-10-10 07:32:02 C 02 13 11.34 +44 05 38.1 18.2 c 704
2012-10-10 07:51:34 C 02 13 09.30 +44 05 19.8 17.1 c 704
2012-10-10 08:11:11 C 02 13 07.17 +44 05 00.8 16.5 c 704
2012-10-10 08:30:55 C 02 13 05.04 +44 04 42.4 16.8 c 704
2012-10-13 17:32:54 C 02 05 00.33 +42 45 32.5 o 071
2012-10-13 17:35:07 C 02 05 00.11 +42 45 30.4 o 071
2012-10-13 17:37:18 C 02 04 59.91 +42 45 28.2 o 071
2012-10-13 17:39:28 C 02 04 59.67 +42 45 26.1 o 071
2012-10-13 17:41:40 C 02 04 59.48 +42 45 24.1 o 071
2012-10-15 06:43:47 C 02 01 27.90 +42 07 41.3 16.8 c 704
2012-10-15 07:03:26 C 02 01 25.94 +42 07 21.1 17.0 c 704
2012-10-15 07:23:13 C 02 01 24.00 +42 07 00.1 17.1 c 704
2012-10-15 07:42:55 C 02 01 22.04 +42 06 39.9 16.8 c 704
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)