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
2001-03-14 07:13:07 C 08 58 57.57 +08 01 11.8 o 608
2001-03-14 07:28:36 C 08 58 56.95 +08 01 14.6 o 608
2001-03-14 07:43:51 C 08 58 56.36 +08 01 19.0 o 608
2002-11-07 09:34:24 C 07 56 59.272 +23 04 07.56 n 645
2002-11-07 09:39:11 C 07 56 59.261 +23 04 07.22 n 645
2002-12-06 08:31:25 C 07 44 24.403 +23 04 39.47 n 645
2002-12-06 08:32:37 C 07 44 24.344 +23 04 39.45 n 645
2002-12-06 08:36:11 C 07 44 24.206 +23 04 39.67 n 645
2003-01-12 06:04:02 C 06 57 57.68 +23 27 48.1 o 644
2003-01-12 07:36:50 C 06 57 52.35 +23 27 47.7 o 644
2004-01-29 11:33:09 C 12 32 47.59 -15 16 01.3 o 699
2004-01-29 11:53:27 C 12 32 48.00 -15 16 10.5 o 699
2004-01-29 12:13:43 C 12 32 48.21 -15 16 19.9 o 699
2004-01-29 12:34:01 C 12 32 48.60 -15 16 29.2 o 699
2004-03-15 08:36:55 C 12 13 26.23 -21 48 50.4 17.1 c 644
2004-03-15 09:23:25 C 12 13 23.25 -21 48 57.7 17.1 c 644
2004-03-15 09:53:39 C 12 13 21.34 -21 49 02.1 17.2 c 644
2004-03-15 22:38:13 C 12 12 34.61 -21 50 58.8 o 198
2004-03-15 22:48:18 C 12 12 33.97 -21 51 00.1 o 198
2004-03-15 22:56:21 C 12 12 33.45 -21 51 01.2 o 198
2004-03-15 23:02:24 C 12 12 33.06 -21 51 02.3 o 198
2004-03-15 23:47:11 C 12 12 30.28 -21 51 07.7 r 938
2004-03-15 23:50:45 C 12 12 29.96 -21 51 09.8 r 132
2004-03-15 23:54:55 C 12 12 29.66 -21 51 10.1 r 132
2004-03-15 23:59:04 C 12 12 29.38 -21 51 10.5 r 132
2004-03-16 00:10:27 C 12 12 28.80 -21 51 11.3 r 938
2004-03-16 00:28:47 C 12 12 27.43 -21 51 14.7 r 204
2004-03-16 00:35:35 C 12 12 26.99 -21 51 15.7 r 204
2004-03-16 00:41:04 C 12 12 26.62 -21 51 16.6 r 204
2004-03-16 06:49:12 C 12 12 03.82 -21 52 08.4 o H06
2004-03-16 06:51:19 C 12 12 03.68 -21 52 08.5 o H06
2004-03-16 06:53:26 C 12 12 03.54 -21 52 08.8 o H06
2004-03-16 07:05:15 C 12 12 02.81 -21 52 10.3 16.9 c 701
2004-03-16 08:01:08 C 12 11 59.10 -21 52 18.1 17.8 c 701
2004-03-16 08:07:21 C 12 11 58.77 -21 52 19.4 c 854
2004-03-16 08:10:31 C 12 11 58.52 -21 52 20.2 c 854
2004-03-16 08:18:27 C 12 11 58.01 -21 52 21.3 c 854
2004-03-16 08:35:09 C 12 11 56.98 -21 52 23.8 c 673
2004-03-16 08:38:30 C 12 11 56.76 -21 52 24.2 c 673
2004-03-16 08:41:49 C 12 11 56.54 -21 52 24.8 c 673
2004-03-16 08:45:29 C 12 11 56.31 -21 52 25.2 c 673
2004-03-16 08:54:35 C 12 11 55.52 -21 52 27.0 21.6 c 701
2004-03-16 14:38:19 C 12 11 33.98 -21 53 02.6 r E12
2004-03-16 14:55:54 C 12 11 32.85 -21 53 06.0 r E12
2004-03-16 15:13:26 C 12 11 31.64 -21 53 07.6 r E12
2004-03-16 15:30:55 C 12 11 30.49 -21 53 09.9 r E12
2004-03-16 17:29:58 C 12 11 22.60 -21 53 24.9 r E12
2004-03-16 17:40:01 C 12 11 21.92 -21 53 26.1 r E12
2004-03-16 17:50:04 C 12 11 21.31 -21 53 26.8 r E12
2004-03-16 18:00:14 C 12 11 20.62 -21 53 28.3 r E12
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)