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
2004-09-08 18:49:58 C 21 33 53.55 +76 11 11.2 c A30
2004-09-08 18:51:34 C 21 33 55.08 +76 11 05.3 c A30
2004-09-08 19:06:29 C 21 34 08.14 +76 10 11.3 d 118
2004-09-08 19:09:33 C 21 34 10.98 +76 10 00.4 d 118
2004-09-08 19:12:38 C 21 34 14.02 +76 09 48.9 d 118
2004-09-08 19:15:41 C 21 34 16.93 +76 09 37.6 d 118
2004-09-08 19:18:45 C 21 34 19.84 +76 09 26.5 d 118
2004-09-08 21:20:33 C 21 36 12.52 +76 01 39.7 o 084
2004-09-09 03:02:57 C 21 41 30.44 +75 39 39.6 c A32
2004-09-09 03:04:33 C 21 41 31.93 +75 39 33.2 c A32
2004-09-09 03:09:25 C 21 41 36.33 +75 39 14.2 c A32
2004-09-09 03:11:01 C 21 41 37.83 +75 39 07.6 c A32
2004-09-09 07:03:27 C 21 45 08.71 +75 24 56.2 c H41
2004-09-09 07:05:25 C 21 45 10.34 +75 24 48.3 c H41
2004-09-09 07:06:54 C 21 45 11.64 +75 24 42.4 c H41
2004-09-09 07:08:00 C 21 45 12.43 +75 24 37.9 c H41
2004-09-09 07:08:57 C 21 45 13.27 +75 24 34.3 c H41
2004-09-09 07:09:58 C 21 45 14.16 +75 24 30.1 c H41
2004-09-09 07:11:01 C 21 45 15.02 +75 24 26.2 c H41
2004-09-09 13:24:38 C 21 50 41.26 +75 00 36.4 m 379
2004-09-09 13:26:17 C 21 50 42.57 +75 00 30.4 m 379
2004-09-09 13:27:57 C 21 50 43.87 +75 00 24.0 m 379
2004-09-09 13:29:35 C 21 50 45.00 +75 00 17.1 m 379
2004-09-09 19:05:34 C 21 55 17.33 +74 38 09.3 o 084
2004-09-10 02:38:00 C 22 00 45.39 +74 08 32.8 c A32
2004-09-10 02:41:15 C 22 00 47.71 +74 08 19.6 c A32
2004-09-10 02:44:30 C 22 00 50.00 +74 08 06.5 c A32
2004-09-10 02:47:43 C 22 00 52.31 +74 07 53.3 c A32
2004-09-10 07:05:28 C 22 03 55.68 +73 51 38.0 c H41
2004-09-10 07:06:53 C 22 03 56.62 +73 51 32.4 c H41
2004-09-10 07:10:15 C 22 03 58.85 +73 51 19.2 c H41
2004-09-10 07:11:10 C 22 03 59.46 +73 51 15.1 c H41
2004-09-10 07:13:26 C 22 04 00.95 +73 51 06.4 c H41
2004-09-10 07:14:52 C 22 04 01.78 +73 51 00.5 c H41
2004-09-10 07:15:57 C 22 04 02.56 +73 50 56.5 c H41
2004-09-10 07:17:06 C 22 04 03.24 +73 50 51.3 c H41
2004-09-10 18:47:05 C 22 11 42.64 +73 05 32.2 o 084
2004-09-10 21:02:32 C 22 13 03.97 +72 57 00.7 589
2004-09-10 21:06:52 C 22 13 06.39 +72 56 43.9 589
2004-09-10 21:10:18 C 22 13 08.33 +72 56 30.4 589
2004-09-10 21:11:59 C 22 13 08.87 +72 56 18.2 c 046
2004-09-10 21:14:06 C 22 13 10.07 +72 56 09.9 c 046
2004-09-10 21:14:15 C 22 13 10.31 +72 56 07.4 o A39
2004-09-10 21:14:57 C 22 13 10.55 +72 56 06.6 c 046
2004-09-10 21:16:54 C 22 13 11.63 +72 55 59.2 c 046
2004-09-10 22:41:33 C 22 13 59.42 +72 50 25.4 o A39
2004-09-10 22:52:30 C 22 14 05.52 +72 49 42.4 o A39
2004-09-10 23:00:55 C 22 14 10.20 +72 49 09.2 o A39
2004-09-11 06:45:39 C 22 18 33.30 +72 19 01.7 c H41
2004-09-11 06:46:48 C 22 18 33.87 +72 18 57.1 c H41
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)