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
2020-12-08 07:36:29 C 02 05 57.42 +26 29 06.1 V T05
2020-12-08 07:37:09 C 02 05 57.47 +26 29 05.9 V T05
2020-12-11 03:49:07 C 02 06 02.53 +25 56 04.9 U I41
2020-12-11 04:37:29 C 02 06 02.62 +25 55 42.4 U I41
2020-12-11 05:54:57 C 02 06 02.73 +25 55 06.4 U I41
2020-12-11 05:57:34 C 02 06 02.72 +25 55 05.3 U I41
2020-12-12 08:23:30 C 02 06 10.15 +25 43 09.6 V T05
2020-12-12 08:28:06 C 02 06 10.18 +25 43 07.4 V T05
2020-12-12 08:38:48 C 02 06 10.24 +25 43 02.2 V T05
2020-12-12 08:55:59 C 02 06 10.30 +25 42 54.7 V T05
2020-12-16 03:57:52 C 02 06 57.84 +25 04 58.7 V G96
2020-12-16 04:05:31 C 02 06 57.93 +25 04 55.9 V G96
2020-12-16 04:13:07 C 02 06 57.98 +25 04 52.9 V G96
2020-12-16 04:20:44 C 02 06 58.06 +25 04 49.8 V G96
2020-12-22 06:55:43 C 02 09 18.18 +24 14 03.3 V T08
2020-12-22 07:00:21 C 02 09 18.24 +24 14 02.1 V T08
2020-12-22 07:15:03 C 02 09 18.52 +24 13 57.4 V T08
2020-12-22 07:25:24 C 02 09 18.68 +24 13 54.3 V T08
2021-01-02 04:22:48 C 02 16 09.88 +23 11 06.1 U I41
2021-01-02 05:40:41 C 02 16 12.24 +23 10 51.8 U I41
2021-01-04 04:18:51 C 02 17 44.20 +23 02 54.3 U I41
2021-01-04 04:49:47 C 02 17 45.17 +23 02 49.5 U I41
2021-01-06 07:51:55 C 02 19 31.266 +22 55 07.99 U F52
2021-01-06 08:11:10 C 02 19 31.923 +22 55 05.16 U F52
2021-01-06 08:30:26 C 02 19 32.579 +22 55 02.33 U F52
2021-01-06 08:49:42 C 02 19 33.247 +22 54 59.44 U F52
2021-01-08 03:20:35 C 02 21 06.16 +22 49 19.2 V G96
2021-01-08 03:28:50 C 02 21 06.48 +22 49 18.6 V G96
2021-01-08 03:37:09 C 02 21 06.77 +22 49 17.6 V G96
2021-01-08 03:45:23 C 02 21 07.07 +22 49 16.7 V G96
2021-01-11 07:08:05 C 02 24 00.408 +22 40 52.19 U F51
2021-01-11 07:25:36 C 02 24 01.077 +22 40 50.36 U F51
2021-01-11 07:43:06 C 02 24 01.744 +22 40 48.47 U F51
2022-01-01 20:11:30 C 09 08 31.16 +12 51 01.3 V D29
2022-01-01 20:52:13 C 09 08 29.62 +12 51 02.8 V D29
2022-01-01 21:32:57 C 09 08 28.14 +12 51 04.9 V D29
2022-01-07 08:30:22 C 09 03 19.63 +12 59 02.5 V G96
2022-01-07 08:37:51 C 09 03 19.32 +12 59 03.1 V G96
2022-01-07 08:45:20 C 09 03 18.96 +12 59 03.4 V G96
2022-01-07 08:52:49 C 09 03 18.67 +12 59 04.2 V G96
2022-01-07 10:18:05 C 09 03 15.188 +12 59 11.04 U F52
2022-01-07 10:34:35 C 09 03 14.477 +12 59 12.29 U F52
2022-01-07 10:51:03 C 09 03 13.767 +12 59 13.47 U F52
2022-01-07 11:07:30 C 09 03 13.056 +12 59 14.72 U F52
2022-01-12 13:26:58 C 08 57 46.163 +13 09 15.45 U F52
2022-01-12 13:41:40 C 08 57 45.456 +13 09 16.75 U F52
2022-01-12 13:56:22 C 08 57 44.760 +13 09 18.16 U F52
2022-01-12 14:11:02 C 08 57 44.073 +13 09 19.53 U F52
2022-01-13 16:10:07 C 08 56 30.70 +13 11 42.3 V D29
2022-01-13 16:50:50 C 08 56 28.76 +13 11 46.9 V D29
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)