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
2004-11-13 20:07:02 C 00 21 49.46 +24 29 48.3 r A16
2004-11-13 20:19:33 C 00 21 50.03 +24 29 40.0 r A16
2004-11-14 00:03:25 C 00 21 59.90 +24 27 08.5 c A43
2004-11-14 00:17:06 C 00 22 00.53 +24 26 59.8 c A43
2004-11-14 00:19:05 C 00 22 00.61 +24 26 59.1 c A43
2004-11-14 00:24:13 C 00 22 00.85 +24 26 55.3 c A43
2004-11-14 00:31:30 C 00 22 01.19 +24 26 50.4 c A43
2004-11-14 00:33:19 C 00 22 01.27 +24 26 48.9 c A43
2004-11-14 17:42:06 C 00 22 50.47 +24 15 35.7 r A16
2004-11-14 17:57:43 C 00 22 51.21 +24 15 25.8 r A16
2004-11-14 18:00:31 C 00 22 51.29 +24 15 23.8 o 151
2004-11-14 18:03:26 C 00 22 51.42 +24 15 22.1 o 151
2004-11-14 18:04:45 C 00 22 51.47 +24 15 21.3 o 151
2004-11-14 18:08:54 C 00 22 51.68 +24 15 18.6 r A16
2004-11-14 18:19:17 C 00 22 52.17 +24 15 11.0 r A16
2004-11-14 18:33:45 C 00 22 52.83 +24 15 02.2 r A16
2004-11-14 19:57:10 C 00 22 56.29 +24 14 06.4 o 084
2004-11-15 17:36:35 C 00 23 58.31 +24 00 22.4 r A16
2004-11-15 17:49:04 C 00 23 58.88 +24 00 14.8 r A16
2004-11-15 18:01:34 C 00 23 59.45 +24 00 06.9 r A16
2004-11-15 18:13:57 C 00 24 00.00 +23 59 59.7 r A16
2004-11-15 18:26:19 C 00 24 00.59 +23 59 51.9 r A16
2004-11-19 20:14:01 C 00 28 44.39 +23 03 16.3 r 106
2004-11-19 20:22:13 C 00 28 44.84 +23 03 11.7 r 106
2004-11-19 20:30:25 C 00 28 45.10 +23 03 07.8 r 106
2004-11-21 19:32:38 C 00 31 05.69 +22 38 52.5 o 084
2004-11-21 21:29:01 C 00 31 11.36 +22 37 57.7 c A53
2004-11-21 21:39:19 C 00 31 11.83 +22 37 52.6 c A53
2004-12-04 03:10:09 C 00 46 37.82 +20 45 24.8 18.0 c 704
2004-12-04 03:28:09 C 00 46 38.70 +20 45 18.0 18.0 c 704
2004-12-04 03:45:57 C 00 46 39.62 +20 45 13.0 18.0 c 704
2004-12-04 04:04:10 C 00 46 40.56 +20 45 08.1 17.9 c 704
2004-12-04 04:21:57 C 00 46 41.48 +20 45 02.5 18.4 c 704
2004-12-09 03:19:49 C 00 53 18.35 +20 15 25.0 18.2 c 704
2004-12-09 03:39:45 C 00 53 19.39 +20 15 19.6 18.3 c 704
2004-12-09 03:59:26 C 00 53 20.48 +20 15 14.3 18.7 c 704
2004-12-09 04:19:31 C 00 53 21.58 +20 15 11.3 18.5 c 704
2004-12-09 04:39:44 C 00 53 22.63 +20 15 04.3 18.3 c 704
2004-12-09 21:16:05 C 00 54 18.92 +20 11 32.8 c A53
2004-12-09 21:34:08 C 00 54 20.04 +20 11 31.4 c A53
2004-12-15 18:21:21 C 01 02 26.49 +19 47 27.8 c 246
2004-12-15 18:22:33 C 01 02 26.55 +19 47 27.3 c 246
2004-12-15 18:24:29 C 01 02 26.64 +19 47 27.5 c 246
2004-12-15 18:26:05 C 01 02 26.75 +19 47 26.9 c 246
2004-12-15 18:27:45 C 01 02 26.86 +19 47 26.8 c 246
2004-12-15 18:29:58 C 01 02 26.98 +19 47 26.4 c 246
2005-01-07 03:20:38 C 01 35 18.78 +19 27 08.6 19.8 c 704
2005-01-07 03:39:32 C 01 35 19.86 +19 27 09.0 20.2 c 704
2005-01-07 03:58:24 C 01 35 21.16 +19 27 10.6 19.8 c 704
2005-01-07 04:17:10 C 01 35 22.25 +19 27 11.2 20.2 c 704
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)