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
2020-03-25 05:20:16 C 13 47 42.24 -35 09 32.6 q X74
2020-03-25 05:33:31 C 13 47 42.04 -35 09 44.2 q X74
2020-04-02 11:29:27 C 13 43 45.36 -38 03 20.7 V T05
2020-04-02 11:35:33 C 13 43 45.13 -38 03 26.0 V T05
2020-04-02 11:46:43 C 13 43 44.75 -38 03 36.3 V T05
2020-04-02 11:54:01 C 13 43 44.49 -38 03 43.0 V T05
2020-04-02 12:06:33 C 13 43 44.03 -38 03 54.1 V T05
2020-04-04 04:09:42 C 13 42 27.19 -38 40 08.7 q X74
2020-04-04 04:27:55 C 13 42 26.45 -38 40 25.0 q X74
2020-04-04 04:45:16 C 13 42 25.74 -38 40 41.0 q X74
2020-04-06 12:18:14 C 13 40 20.15 -39 32 02.8 V T05
2020-04-06 12:22:52 C 13 40 19.94 -39 32 07.2 V T05
2020-04-06 12:30:59 C 13 40 19.54 -39 32 14.6 V T05
2020-04-06 12:46:23 C 13 40 18.81 -39 32 28.5 V T05
2020-04-09 12:15:44 C 13 37 04.68 -40 39 21.2 q E89
2020-04-09 12:18:50 C 13 37 04.51 -40 39 24.4 q E89
2020-04-09 12:22:32 C 13 37 04.29 -40 39 28.2 q E89
2020-04-09 12:26:09 C 13 37 04.06 -40 39 31.4 q E89
2020-04-11 12:36:29 C 13 34 29.62 -41 25 26.8 q E89
2020-04-11 12:39:16 C 13 34 29.42 -41 25 29.7 q E89
2020-04-11 12:42:32 C 13 34 29.19 -41 25 32.9 q E89
2020-04-11 12:45:43 C 13 34 28.99 -41 25 36.0 q E89
2020-04-12 08:53:27 C 13 33 19.54 -41 45 11.6 V T08
2020-04-12 09:14:17 C 13 33 18.15 -41 45 32.2 V T08
2020-04-12 09:22:16 C 13 33 17.62 -41 45 40.1 V T08
2020-04-12 09:35:46 C 13 33 16.71 -41 45 53.4 V T08
2020-04-16 08:09:11 C 13 26 56.58 -43 17 53.1 V T08
2020-04-16 08:17:24 C 13 26 55.89 -43 18 01.0 V T08
2020-04-16 08:33:37 C 13 26 54.55 -43 18 17.6 V T08
2020-04-16 08:43:54 C 13 26 53.71 -43 18 28.2 V T08
2020-04-20 08:08:45 C 13 18 58.34 -44 52 46.6 V T08
2020-04-20 08:26:52 C 13 18 56.53 -44 53 05.0 V T08
2020-04-20 08:30:55 C 13 18 56.10 -44 53 09.5 V T08
2020-04-20 08:46:57 C 13 18 54.49 -44 53 25.6 V T08
2020-04-21 18:10:56 C 13 15 45.16 -45 26 18.7 o K95
2020-04-21 19:16:38 C 13 15 38.31 -45 27 27.4 o K95
2020-04-24 20:31:31 C 13 07 51.83 -46 40 43.5 o K95
2020-04-24 20:44:53 C 13 07 50.16 -46 40 58.8 o K95
2020-04-25 02:59:34 C 13 07 06.33 -46 47 19.9 q X74
2020-04-25 03:09:31 C 13 07 05.08 -46 47 29.6 q X74
2020-04-25 03:19:56 C 13 07 03.76 -46 47 39.8 q X74
2020-05-05 18:36:44 C 12 29 13.81 -51 03 34.6 q L68
2020-05-05 18:43:30 C 12 29 12.43 -51 03 41.8 q L68
2020-05-05 19:00:35 C 12 29 08.95 -51 03 59.2 q L68
2020-05-09 01:31:58 C 12 13 06.44 -52 21 43.9 q X74
2020-05-09 01:45:06 C 12 13 03.29 -52 21 56.1 q X74
2020-05-09 01:58:09 C 12 13 00.20 -52 22 08.4 q X74
2020-05-09 19:21:50 C 12 09 06.58 -52 39 01.1 o K95
2020-05-09 19:35:11 C 12 09 03.28 -52 39 14.2 o K95
2020-05-10 01:23:51 C 12 07 42.10 -52 44 50.4 q 834
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)