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
2004-08-27 20:17:19 C 13 54 47.07 +66 02 29.5 o 240
2004-08-27 20:18:23 C 13 54 47.63 +66 02 37.0 o 240
2004-08-27 20:19:26 C 13 54 48.23 +66 02 44.6 o 240
2004-08-28 21:18:31 C 14 10 12.91 +69 01 49.1 c A32
2004-08-28 21:20:08 C 14 10 14.02 +69 01 59.7 c A32
2004-08-28 21:23:22 C 14 10 16.30 +69 02 21.1 c A32
2004-08-28 21:24:59 C 14 10 17.41 +69 02 33.5 c A32
2004-08-31 19:12:00 C 15 20 45.87 +76 17 29.3 o 198
2004-08-31 19:14:13 C 15 20 49.00 +76 17 40.4 o 198
2004-08-31 19:16:17 C 15 20 51.90 +76 17 50.8 o 198
2004-08-31 19:16:26 C 15 20 52.09 +76 17 51.6 o 198
2004-08-31 19:20:33 C 15 20 57.86 +76 18 12.3 o 198
2004-09-01 20:55:33 C 16 03 16.20 +78 16 59.8 c A32
2004-09-01 21:02:00 C 16 03 28.27 +78 17 25.0 c A32
2004-09-01 21:05:15 C 16 03 34.30 +78 17 37.6 c A32
2004-09-01 21:06:52 C 16 03 37.28 +78 17 43.7 c A32
2004-09-01 21:11:43 C 16 03 46.33 +78 18 02.6 c A32
2004-09-01 21:36:25 C 16 04 30.36 +78 19 42.3 c A48
2004-09-01 21:38:34 C 16 04 34.32 +78 19 50.2 c A48
2004-09-01 21:40:44 C 16 04 38.41 +78 19 58.2 c A48
2004-09-02 20:58:50 C 16 53 46.01 +79 37 57.9 c A32
2004-09-02 21:02:04 C 16 53 53.38 +79 38 05.8 c A32
2004-09-02 21:05:17 C 16 54 00.66 +79 38 13.9 c A32
2004-09-02 21:08:30 C 16 54 07.99 +79 38 22.0 c A32
2004-09-02 21:11:45 C 16 54 15.41 +79 38 29.8 c A32
2004-09-04 23:48:02 C 19 00 10.78 +80 20 59.6 d 048
2004-09-04 23:49:02 C 19 00 13.21 +80 20 58.2 d 048
2004-09-04 23:50:02 C 19 00 15.67 +80 20 57.4 d 048
2004-09-04 23:51:02 C 19 00 18.04 +80 20 56.3 d 048
2004-09-04 23:52:02 C 19 00 20.48 +80 20 55.2 d 048
2004-09-04 23:54:02 C 19 00 25.35 +80 20 52.8 d 048
2004-09-05 20:47:13 C 19 48 12.74 +79 50 03.0 c 127
2004-09-05 20:52:50 C 19 48 24.21 +79 49 51.4 c 127
2004-09-05 20:56:56 C 19 48 32.62 +79 49 43.1 c 127
2004-09-06 19:50:43 C 20 31 56.35 +78 52 02.4 d 048
2004-09-06 19:51:13 C 20 31 57.15 +78 52 01.1 d 048
2004-09-06 19:51:43 C 20 31 57.93 +78 51 59.5 d 048
2004-09-06 19:52:13 C 20 31 58.80 +78 51 58.1 d 048
2004-09-06 19:52:43 C 20 31 59.64 +78 51 56.6 d 048
2004-09-06 19:53:13 C 20 32 00.36 +78 51 55.2 d 048
2004-09-06 19:53:43 C 20 32 01.21 +78 51 53.7 d 048
2004-09-06 19:54:16 C 20 32 02.08 +78 51 52.2 d 048
2004-09-06 20:07:41 C 20 32 25.92 +78 51 11.5 c 127
2004-09-06 20:12:21 C 20 32 33.50 +78 50 58.1 c 127
2004-09-06 20:17:01 C 20 32 41.06 +78 50 44.4 c 127
2004-09-06 20:21:02 C 20 32 47.64 +78 50 32.9 c 127
2004-09-06 20:25:59 C 20 32 55.65 +78 50 18.7 c 127
2004-09-06 20:48:46 C 20 33 29.70 +78 49 13.7 d 118
2004-09-06 20:50:17 C 20 33 32.20 +78 49 09.2 d 118
2004-09-06 20:51:50 C 20 33 34.61 +78 49 04.6 d 118
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)