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
2020-05-10 02:17:05 C 12 07 28.82 -52 45 40.4 q 834
2020-05-11 17:00:48 C 11 58 06.10 -53 22 45.3 q L68
2020-05-11 17:15:36 C 11 58 02.10 -53 22 59.9 q L68
2020-05-11 17:43:48 C 11 57 54.49 -53 23 28.2 q L68
2020-05-21 22:09:06 C 10 32 43.54 -56 28 01.1 q Y16
2020-05-21 22:29:53 C 10 32 33.21 -56 28 08.1 q Y16
2020-05-21 22:48:44 C 10 32 23.79 -56 28 14.0 q Y16
2020-05-27 09:38:19 S 09 19 42.648 -56 08 17.34 L C51
2020-05-27 17:29:01 S 09 14 37.961 -56 01 03.47 L C51
2020-05-28 06:22:05 C 09 06 08.86 -55 47 55.3 q E89
2020-05-28 06:25:43 C 09 06 06.35 -55 47 50.3 q E89
2020-05-28 06:27:24 C 09 06 05.22 -55 47 48.6 q E89
2020-05-28 06:28:40 C 09 06 04.29 -55 47 47.2 q E89
2020-05-30 23:50:21 C 08 20 12.47 -53 50 10.1 q Y00
2020-05-31 00:01:33 C 08 20 04.17 -53 49 41.5 q Y00
2020-05-31 00:11:34 C 08 19 56.96 -53 49 12.7 q Y00
2020-05-31 23:34:10 C 08 02 50.00 -52 44 39.1 q Y00
2020-05-31 23:47:02 C 08 02 40.51 -52 43 56.4 q Y00
2020-07-05 11:09:12 C 03 26 59.90 +22 02 50.4 U I41
2020-07-05 11:16:35 C 03 26 59.60 +22 03 06.0 U I41
2020-07-05 11:23:59 C 03 26 59.32 +22 03 21.6 U I41
2020-07-05 11:31:22 C 03 26 59.01 +22 03 37.3 U I41
2020-07-09 11:10:19 C 03 24 38.09 +25 00 22.1 U I41
2020-07-09 11:17:27 C 03 24 37.98 +25 00 34.3 U I41
2020-07-09 11:24:38 C 03 24 37.86 +25 00 46.6 U I41
2020-07-09 11:31:47 C 03 24 37.74 +25 00 58.7 U I41
2020-07-11 11:14:54 C 03 24 16.31 +26 16 00.4 U I41
2020-07-11 11:21:59 C 03 24 16.27 +26 16 11.4 U I41
2020-07-11 11:29:05 C 03 24 16.22 +26 16 22.4 U I41
2020-07-11 11:36:11 C 03 24 16.17 +26 16 33.4 U I41
2020-07-22 23:54:04 C 03 29 27.59 +31 40 42.7 V L76
2020-07-23 00:01:09 C 03 29 27.85 +31 40 50.0 V L76
2020-07-23 00:08:28 C 03 29 28.06 +31 40 56.6 V L76
2020-07-29 02:53:01 C 03 35 19.88 +33 44 09.8 V C95
2020-07-29 03:02:08 C 03 35 20.25 +33 44 17.5 V C95
2020-07-30 11:14:31 C 03 36 46.99 +34 08 21.5 V 703
2020-07-30 11:19:06 C 03 36 47.19 +34 08 25.5 V 703
2020-07-30 11:23:41 C 03 36 47.37 +34 08 28.7 V 703
2020-07-30 11:28:16 C 03 36 47.55 +34 08 32.1 V 703
2020-07-30 13:49:21 C 03 36 54.309 +34 10 17.73 U F51
2020-07-30 14:07:02 C 03 36 55.032 +34 10 31.36 U F51
2020-07-30 14:24:38 C 03 36 55.743 +34 10 44.88 U F51
2020-08-06 01:06:47 C 03 44 18.21 +35 53 27.6 V A17
2020-08-06 01:14:07 C 03 44 18.55 +35 53 32.5 V A17
2020-08-06 01:25:24 C 03 44 19.09 +35 53 39.7 V A17
2020-08-07 14:12:35 C 03 46 07.13 +36 15 51.8 V T05
2020-08-07 14:27:52 C 03 46 07.80 +36 16 01.3 V T05
2020-08-07 14:43:05 C 03 46 08.46 +36 16 10.7 V T05
2020-08-07 14:59:06 C 03 46 09.14 +36 16 20.6 V T05
2020-08-08 11:45:38 C 03 47 10.84 +36 28 15.6 V T08
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)