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
2004-11-04 05:14:02 C 00 11 35.03 +27 32 18.1 16.7 c 644
2004-11-04 11:33:42 C 00 11 51.33 +27 26 28.3 m 355
2004-11-04 11:36:50 C 00 11 51.42 +27 26 25.5 m 355
2004-11-04 11:39:50 C 00 11 51.48 +27 26 22.3 m 355
2004-11-04 11:42:48 C 00 11 51.66 +27 26 19.7 m 355
2004-11-04 20:26:02 C 00 12 13.77 +27 18 23.9 r A30
2004-11-04 20:30:58 C 00 12 13.92 +27 18 18.8 r A30
2004-11-04 20:36:32 C 00 12 14.13 +27 18 14.0 r A30
2004-11-04 20:40:30 C 00 12 14.28 +27 18 10.4 r A30
2004-11-06 07:00:58 C 00 13 41.67 +26 47 56.6 r H41
2004-11-06 07:05:33 C 00 13 41.86 +26 47 52.7 r H41
2004-11-06 07:09:08 C 00 13 42.01 +26 47 49.5 r H41
2004-11-06 07:10:57 C 00 13 42.08 +26 47 48.1 r H41
2004-11-06 07:25:26 C 00 13 42.64 +26 47 36.1 r H41
2004-11-07 17:36:35 C 00 15 13.12 +26 18 48.4 r 185
2004-11-07 17:43:56 C 00 15 13.40 +26 18 42.2 r 185
2004-11-07 17:52:34 C 00 15 13.74 +26 18 35.4 r 185
2004-11-08 11:34:50 C 00 16 00.03 +26 04 17.3 300
2004-11-08 11:42:29 C 00 16 00.36 +26 04 11.2 300
2004-11-08 11:45:59 C 00 16 00.45 +26 04 08.3 300
2004-11-08 11:49:55 C 00 16 00.65 +26 04 05.1 300
2004-11-08 17:44:32 C 00 16 16.73 +25 59 17.3 r A16
2004-11-08 17:55:58 C 00 16 17.18 +25 59 08.4 r A16
2004-11-08 18:07:18 C 00 16 17.69 +25 58 59.8 r A16
2004-11-08 18:20:05 C 00 16 18.20 +25 58 49.6 r A16
2004-11-08 18:32:50 C 00 16 18.74 +25 58 39.5 r A16
2004-11-08 19:18:46 C 00 16 20.56 +25 58 04.1 c 434
2004-11-08 19:23:15 C 00 16 20.74 +25 58 01.3 c 434
2004-11-08 19:49:17 C 00 16 21.82 +25 57 40.2 d 565
2004-11-08 19:54:55 C 00 16 22.03 +25 57 35.9 d 565
2004-11-08 20:00:16 C 00 16 22.27 +25 57 31.3 d 565
2004-11-08 20:05:38 C 00 16 22.48 +25 57 27.2 d 565
2004-11-08 20:11:34 C 00 16 22.75 +25 57 22.5 d 565
2004-11-09 04:32:45 C 00 16 44.87 +25 50 50.4 d 703
2004-11-09 04:46:41 C 00 16 45.42 +25 50 39.4 d 703
2004-11-09 05:00:27 C 00 16 45.99 +25 50 28.7 d 703
2004-11-09 05:14:10 C 00 16 46.54 +25 50 17.7 d 703
2004-11-09 05:58:11 C 00 16 48.08 +25 49 41.6 r H41
2004-11-09 06:04:00 C 00 16 48.33 +25 49 36.2 r H41
2004-11-09 06:08:16 C 00 16 48.50 +25 49 33.5 r H41
2004-11-09 06:10:08 C 00 16 48.58 +25 49 31.6 r H41
2004-11-09 06:12:38 C 00 16 48.74 +25 49 30.0 r H41
2004-11-10 04:51:13 C 00 17 49.82 +25 32 06.2 17.1 c 704
2004-11-10 05:10:19 C 00 17 50.61 +25 31 51.4 17.3 c 704
2004-11-10 05:28:44 C 00 17 51.37 +25 31 37.2 17.2 c 704
2004-11-10 05:48:47 C 00 17 52.20 +25 31 21.8 17.3 c 704
2004-11-10 06:20:51 C 00 17 53.49 +25 30 57.6 17.6 c 704
2004-11-13 19:29:19 C 00 21 47.83 +24 30 13.6 r A16
2004-11-13 19:41:57 C 00 21 48.38 +24 30 05.3 r A16
2004-11-13 19:54:30 C 00 21 48.92 +24 29 56.8 r A16
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)