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
2019-01-10 00:08:57 C 07 21 27.47 +22 06 03.4 20.2 q J43
2019-01-10 08:26:13 C 07 20 59.280 +22 06 19.08 U F51
2019-01-10 08:43:17 C 07 20 58.279 +22 06 19.68 U F51
2019-01-10 09:00:18 C 07 20 57.288 +22 06 20.28 U F51
2019-01-10 09:17:33 C 07 20 56.281 +22 06 20.80 U F51
2019-01-25 11:10:34 C 07 01 14.198 +22 11 58.51 U F51
2019-01-25 11:30:14 C 07 01 13.189 +22 11 58.39 U F51
2019-01-25 11:49:45 C 07 01 12.206 +22 11 58.24 U F51
2020-01-27 15:20:15 C 13 12 14.883 -19 05 42.37 U F52
2020-01-27 15:27:49 C 13 12 15.217 -19 05 46.79 U F52
2020-01-27 15:35:16 C 13 12 15.552 -19 05 51.34 U F52
2020-01-27 15:42:44 C 13 12 15.891 -19 05 55.70 U F52
2020-01-29 12:01:17 C 13 14 18.73 -19 32 16.5 U I41
2020-01-29 12:33:59 C 13 14 20.17 -19 32 36.1 U I41
2020-01-29 14:00:07 C 13 14 24.20 -19 33 26.2 V T05
2020-01-29 14:19:06 C 13 14 25.08 -19 33 37.7 V T05
2020-01-29 14:43:28 C 13 14 26.12 -19 33 52.7 V T05
2020-01-29 14:56:23 C 13 14 26.69 -19 33 59.3 V T05
2020-01-30 11:10:20 C 13 15 22.05 -19 46 06.0 V G96
2020-01-30 11:17:44 C 13 15 22.38 -19 46 10.3 V G96
2020-01-30 11:25:07 C 13 15 22.72 -19 46 14.8 V G96
2020-01-30 11:32:29 C 13 15 23.04 -19 46 19.1 V G96
2020-01-31 11:36:46 C 13 16 28.48 -20 00 42.1 V T08
2020-01-31 11:41:40 C 13 16 28.78 -20 00 47.0 V T08
2020-01-31 11:52:24 C 13 16 29.19 -20 00 52.5 V T08
2020-01-31 12:07:11 C 13 16 29.86 -20 01 02.2 V T08
2020-02-01 11:31:11 C 13 17 32.53 -20 15 09.6 U I41
2020-02-01 12:31:27 C 13 17 35.07 -20 15 45.9 U I41
2020-02-02 10:17:57 C 13 18 33.13 -20 28 56.0 V 703
2020-02-02 10:25:40 C 13 18 33.52 -20 29 00.2 V 703
2020-02-02 10:41:08 C 13 18 34.10 -20 29 09.1 V 703
2020-02-20 10:19:12 C 13 35 31.49 -25 02 25.5 V 703
2020-02-20 10:26:50 C 13 35 31.70 -25 02 31.0 V 703
2020-02-20 10:34:28 C 13 35 31.90 -25 02 36.0 V 703
2020-02-20 10:42:07 C 13 35 32.30 -25 02 41.6 V 703
2020-03-03 13:26:14 C 13 43 43.93 -28 23 19.3 V T08
2020-03-03 13:51:36 C 13 43 44.39 -28 23 37.5 V T08
2020-03-03 13:56:14 C 13 43 44.49 -28 23 40.6 V T08
2020-03-03 14:10:51 C 13 43 44.76 -28 23 51.2 V T08
2020-03-13 11:26:34 C 13 47 39.44 -31 20 37.8 q E89
2020-03-13 12:05:48 C 13 47 39.69 -31 21 07.9 q E89
2020-03-19 13:34:12 C 13 48 24.09 -33 16 49.3 V T08
2020-03-19 13:48:09 C 13 48 24.02 -33 17 00.4 V T08
2020-03-19 13:59:30 C 13 48 24.00 -33 17 09.5 V T08
2020-03-19 14:07:28 C 13 48 23.97 -33 17 15.9 V T08
2020-03-21 11:17:49 C 13 48 20.29 -33 54 17.1 V T05
2020-03-21 11:27:42 C 13 48 20.20 -33 54 25.4 V T05
2020-03-21 11:32:22 C 13 48 20.18 -33 54 29.2 V T05
2020-03-21 11:53:29 C 13 48 20.01 -33 54 46.7 V T05
2020-03-25 05:04:31 C 13 47 42.52 -35 09 19.2 q X74
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)