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
2020-11-12 05:29:42 C 02 24 20.91 +33 39 06.2 V 703
2020-11-12 05:38:10 C 02 24 20.35 +33 38 59.2 V 703
2020-11-12 05:46:40 C 02 24 19.80 +33 38 52.3 V 703
2020-11-12 05:55:08 C 02 24 19.26 +33 38 45.4 V 703
2020-11-13 05:37:51 C 02 22 53.90 +33 19 23.8 V G96
2020-11-13 05:45:15 C 02 22 53.43 +33 19 17.8 V G96
2020-11-13 05:52:40 C 02 22 52.96 +33 19 11.9 V G96
2020-11-13 06:00:05 C 02 22 52.51 +33 19 05.8 V G96
2020-11-14 02:01:08 C 02 21 43.63 +33 02 48.7 V W46
2020-11-14 02:33:44 C 02 21 41.70 +33 02 22.4 V W46
2020-11-14 02:49:04 C 02 21 40.78 +33 02 10.3 V W46
2020-11-14 03:16:17 C 02 21 39.19 +33 01 48.3 V W33
2020-11-14 03:22:33 C 02 21 38.80 +33 01 43.4 V W33
2020-11-14 03:28:51 C 02 21 38.43 +33 01 38.1 V W33
2020-11-15 04:45:21 C 02 20 15.08 +32 41 14.7 V 703
2020-11-15 04:53:02 C 02 20 14.63 +32 41 07.9 V 703
2020-11-15 05:00:42 C 02 20 14.21 +32 41 01.5 V 703
2020-11-15 05:08:23 C 02 20 13.78 +32 40 55.6 V 703
2020-11-16 07:02:32 C 02 18 52.825 +32 20 13.03 U F51
2020-11-16 07:18:54 C 02 18 51.940 +32 20 00.17 U F51
2020-11-16 07:35:15 C 02 18 51.055 +32 19 47.29 U F51
2020-11-16 07:51:38 C 02 18 50.166 +32 19 34.41 U F51
2020-11-17 21:42:16 C 02 16 59.37 +31 49 34.9 V 160
2020-11-17 21:44:33 C 02 16 59.23 +31 49 33.3 V 160
2020-11-17 21:46:44 C 02 16 59.15 +31 49 31.9 V 160
2020-11-18 04:38:10 C 02 16 40.32 +31 44 11.9 V 703
2020-11-18 04:45:44 C 02 16 39.99 +31 44 06.3 V 703
2020-11-18 04:53:18 C 02 16 39.61 +31 43 59.9 V 703
2020-11-18 05:00:52 C 02 16 39.24 +31 43 54.4 V 703
2020-11-18 21:39:04 C 02 15 54.19 +31 30 55.7 V 160
2020-11-18 21:41:27 C 02 15 54.12 +31 30 53.8 V 160
2020-11-18 21:43:49 C 02 15 53.89 +31 30 51.7 V 160
2020-11-20 06:26:39 C 02 14 31.395 +31 05 49.02 U F51
2020-11-20 06:44:23 C 02 14 30.620 +31 05 35.73 U F51
2020-11-20 07:02:09 C 02 14 29.845 +31 05 22.44 U F51
2020-11-20 07:20:00 C 02 14 29.060 +31 05 09.02 U F51
2020-11-20 07:41:03 C 02 14 28.140 +31 04 53.15 U F51
2020-11-20 08:01:14 C 02 14 27.255 +31 04 37.94 U F51
2020-11-20 08:21:38 C 02 14 26.359 +31 04 22.48 U F51
2020-11-21 04:11:27 C 02 13 39.85 +30 49 21.9 V 703
2020-11-21 04:19:09 C 02 13 39.47 +30 49 14.7 V 703
2020-11-21 04:34:36 C 02 13 38.50 +30 49 04.3 V 703
2020-11-22 03:33:48 C 02 12 47.85 +30 31 56.9 V G96
2020-11-22 03:41:51 C 02 12 47.54 +30 31 51.1 V G96
2020-11-22 03:49:53 C 02 12 47.22 +30 31 45.2 V G96
2020-11-22 03:57:55 C 02 12 46.92 +30 31 39.4 V G96
2020-11-22 22:43:37 C 02 12 07.19 +30 17 51.1 V 160
2020-11-22 22:47:09 C 02 12 07.04 +30 17 48.5 V 160
2020-11-22 22:50:40 C 02 12 06.94 +30 17 46.0 V 160
2020-11-23 01:09:09 C 02 12 02.94 +30 16 04.7 V V93
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)