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
2012-12-10 22:17:11 C 01 31 03.56 +23 19 32.4 c A24
2012-12-10 22:18:13 C 01 31 03.59 +23 19 32.0 c A24
2012-12-10 22:19:15 C 01 31 03.60 +23 19 31.6 c A24
2012-12-10 22:20:17 C 01 31 03.58 +23 19 31.6 c A24
2012-12-10 23:21:33 C 01 31 05.27 +23 19 09.0 c A24
2012-12-10 23:23:38 C 01 31 05.36 +23 19 08.7 c A24
2012-12-10 23:24:40 C 01 31 05.39 +23 19 08.1 c A24
2012-12-11 21:16:06 C 01 31 44.71 +23 11 27.2 c A24
2012-12-11 21:17:09 C 01 31 44.71 +23 11 27.0 c A24
2012-12-11 21:18:11 C 01 31 44.76 +23 11 26.5 c A24
2012-12-11 21:19:13 C 01 31 44.77 +23 11 25.9 c A24
2012-12-11 22:51:35 C 01 31 47.46 +23 10 53.5 c A24
2012-12-11 22:52:37 C 01 31 47.48 +23 10 53.1 c A24
2012-12-11 22:53:39 C 01 31 47.52 +23 10 53.0 c A24
2012-12-11 22:54:41 C 01 31 47.53 +23 10 52.2 c A24
2012-12-29 06:40:43 C 01 47 39.820 +21 35 25.94 L F51
2012-12-29 06:58:52 C 01 47 40.612 +21 35 23.63 L F51
2013-01-06 05:14:34 C 01 56 38.50 +21 17 22.8 r 703
2013-01-06 05:26:20 C 01 56 39.01 +21 17 23.1 r 703
2013-01-06 05:38:17 C 01 56 39.55 +21 17 20.6 r 703
2013-01-06 05:50:15 C 01 56 40.09 +21 17 21.0 r 703
2013-01-10 03:11:38 C 02 01 22.49 +21 13 00.7 19.3 c 704
2013-01-10 03:30:19 C 02 01 23.41 +21 13 00.6 19.4 c 704
2013-01-10 03:49:37 C 02 01 24.39 +21 12 58.1 19.6 c 704
2013-01-15 05:49:45 C 02 07 49.00 +21 11 07.3 t 290
2013-01-15 05:52:45 C 02 07 49.18 +21 11 06.9 t 290
2013-01-15 05:55:44 C 02 07 49.34 +21 11 07.3 t 290
2013-12-24 10:22:35 C 09 06 18.54 +13 44 18.2 q G96
2013-12-24 10:33:19 C 09 06 18.18 +13 44 18.6 q G96
2013-12-24 10:44:02 C 09 06 17.86 +13 44 18.5 q G96
2013-12-24 10:54:46 C 09 06 17.51 +13 44 19.6 q G96
2013-12-25 11:01:26 C 09 05 34.25 +13 44 54.1 o 691
2013-12-25 11:26:59 C 09 05 33.43 +13 44 55.1 o 691
2013-12-25 11:52:35 C 09 05 32.65 +13 44 55.3 o 691
2013-12-27 03:05:50 C 09 04 18.73 +13 46 06.9 20.9 u J43
2013-12-27 03:24:34 C 09 04 18.09 +13 46 07.4 20.4 u J43
2013-12-27 03:43:15 C 09 04 17.47 +13 46 07.8 21.3 u J43
2013-12-27 04:01:56 C 09 04 16.86 +13 46 08.8 20.9 u J43
2014-01-02 09:58:52 C 08 58 53.47 +13 53 14.3 o 691
2014-01-02 10:24:24 C 08 58 52.44 +13 53 16.2 o 691
2014-01-02 10:49:56 C 08 58 51.39 +13 53 17.6 o 691
2014-01-05 10:16:58 C 08 55 56.410 +13 58 00.26 L F51
2014-01-05 10:38:47 C 08 55 55.469 +13 58 01.78 L F51
2014-01-05 11:00:36 C 08 55 54.514 +13 58 03.03 L F51
2014-01-05 11:22:25 C 08 55 53.574 +13 58 04.90 L F51
2014-01-09 07:34:39 C 08 51 49.23 +14 05 15.4 o 691
2014-01-09 08:00:10 C 08 51 48.04 +14 05 18.2 o 691
2014-01-09 08:25:41 C 08 51 46.86 +14 05 20.2 o 691
2014-01-25 07:27:46 C 08 32 15.809 +14 44 54.67 L F51
2014-01-25 08:00:31 C 08 32 14.012 +14 44 58.61 L F51
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)