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
2004-09-06 20:53:21 C 20 33 37.10 +78 49 00.1 d 118
2004-09-06 20:54:54 C 20 33 39.55 +78 48 55.5 d 118
2004-09-06 23:58:44 C 20 38 29.88 +78 39 27.9 15.0 i 057
2004-09-07 00:00:12 C 20 38 32.23 +78 39 23.4 15.0 i 057
2004-09-07 00:01:33 C 20 38 34.39 +78 39 19.4 15.0 i 057
2004-09-07 00:03:43 C 20 38 37.71 +78 39 11.4 i 057
2004-09-07 00:08:45 C 20 38 45.74 +78 38 56.2 15.2 i 057
2004-09-07 00:10:02 C 20 38 47.64 +78 38 52.2 15.2 i 057
2004-09-07 00:11:12 C 20 38 49.65 +78 38 48.1 15.3 i 057
2004-09-07 00:12:28 C 20 38 51.44 +78 38 43.9 15.4 i 057
2004-09-07 00:13:45 C 20 38 53.52 +78 38 40.1 15.3 i 057
2004-09-07 00:15:27 C 20 38 56.22 +78 38 34.2 15.3 i 057
2004-09-07 19:59:14 C 21 07 39.50 +77 34 03.2 o 084
2004-09-07 20:14:39 C 21 08 03.43 +77 33 21.4 c 434
2004-09-07 20:16:01 C 21 08 05.04 +77 33 16.7 c 434
2004-09-07 20:17:22 C 21 08 06.71 +77 33 12.4 c 434
2004-09-07 20:19:03 C 21 08 08.67 +77 33 06.6 c 434
2004-09-07 20:20:24 C 21 08 10.40 +77 33 01.8 c 434
2004-09-07 20:21:46 C 21 08 12.19 +77 32 57.1 c 434
2004-09-07 20:23:08 C 21 08 13.80 +77 32 52.4 c 434
2004-09-07 20:40:29 C 21 08 35.44 +77 31 51.4 c A48
2004-09-07 20:42:06 C 21 08 37.38 +77 31 45.9 c A48
2004-09-07 20:43:42 C 21 08 39.35 +77 31 40.4 c A48
2004-09-07 23:10:45 C 21 11 36.12 +77 22 56.2 d 118
2004-09-07 23:15:19 C 21 11 41.59 +77 22 39.7 d 118
2004-09-07 23:18:21 C 21 11 45.26 +77 22 28.6 d 118
2004-09-07 23:21:23 C 21 11 48.93 +77 22 17.6 d 118
2004-09-07 23:24:25 C 21 11 52.59 +77 22 06.6 d 118
2004-09-08 07:44:05 C 21 21 42.66 +76 52 16.7 c H41
2004-09-08 07:46:28 C 21 21 45.43 +76 52 08.0 c H41
2004-09-08 07:47:13 C 21 21 46.34 +76 52 04.7 c H41
2004-09-08 07:48:57 C 21 21 48.28 +76 51 58.8 c H41
2004-09-08 07:50:01 C 21 21 49.27 +76 51 54.1 c H41
2004-09-08 07:51:05 C 21 21 50.48 +76 51 50.5 c H41
2004-09-08 07:52:20 C 21 21 51.86 +76 51 45.8 c H41
2004-09-08 13:12:51 C 21 27 55.81 +76 32 28.0 r 379
2004-09-08 13:19:28 C 21 28 02.38 +76 32 02.8 r 379
2004-09-08 13:22:46 C 21 28 05.68 +76 31 51.2 r 379
2004-09-08 13:32:36 C 21 28 15.67 +76 31 13.7 r 379
2004-09-08 13:34:53 C 21 28 17.79 +76 31 05.3 r 379
2004-09-08 13:39:30 C 21 28 22.58 +76 30 48.4 r 379
2004-09-08 18:33:36 C 21 33 36.45 +76 12 09.5 d 048
2004-09-08 18:34:36 C 21 33 37.38 +76 12 06.1 d 048
2004-09-08 18:35:36 C 21 33 38.33 +76 12 02.3 d 048
2004-09-08 18:36:36 C 21 33 39.37 +76 11 58.6 d 048
2004-09-08 18:37:36 C 21 33 40.32 +76 11 55.2 d 048
2004-09-08 18:38:36 C 21 33 41.22 +76 11 51.3 d 048
2004-09-08 18:40:45 C 21 33 44.56 +76 11 44.6 c A30
2004-09-08 18:43:28 C 21 33 47.21 +76 11 34.6 c A30
2004-09-08 18:46:10 C 21 33 49.81 +76 11 25.0 c A30
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)