2003 EP4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6448770199 ± 6.37e-08
Semi-major axis (a)1.3596921670 AU ± 3.34e-09
Inclination (i)0.51171051° ± 1.12e-05
Long. of Asc. Node (Ω)212.36727318° ± 1.17e-03
Arg. of Perihelion (ω)66.41595876° ± 1.18e-03
Mean Anomaly (M)82.05633550° ± 3.03e-05
Mean Motion (n)0.6216577936°/day ± 2.29e-09
Perihelion dist (q)0.48285793 AU ± 8.66e-08
Aphelion dist (Q)2.23652640 AU ± 8.68e-08
Orbital Period1.58548046 yr ± 5.85e-09
Physical Parameters
H (abs. magnitude)23.93
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.689″
Uncertainty0
Orbit TypeApollo
MOID0.000809 AU
Observations Used97
Radar Obs Used3
Oppositions1
Arc Total2003-2022
First Observation Used2003-03-07
Last Observation Used2022-02-25
Observations (99)
Date Type RA Dec Mag Band Observatory
2003-03-07 07:17:10 C 11 00 13.84 -00 21 03.0 18.9 c 704
2003-03-07 07:37:10 C 11 00 04.00 -00 21 01.9 18.2 c 704
2003-03-07 08:09:10 C 10 59 48.17 -00 20 58.4 18.3 c 704
2003-03-07 08:27:56 C 10 59 38.83 -00 20 56.4 18.5 c 704
2003-03-07 08:48:40 C 10 59 28.50 -00 20 53.5 19.0 c 704
2003-03-08 06:34:00 C 10 47 18.06 -00 17 34.8 c 926
2003-03-08 06:35:16 C 10 47 17.02 -00 17 34.1 c 926
2003-03-08 06:36:35 C 10 47 16.12 -00 17 34.1 c 926
2003-03-08 14:42:08 C 10 41 15.02 -00 12 50.1 m 428
2003-03-08 14:45:36 C 10 41 12.22 -00 12 48.8 m 428
2003-03-08 14:49:01 C 10 41 09.30 -00 12 48.2 m 428
2003-03-08 14:52:28 C 10 41 06.39 -00 12 47.3 m 428
2003-03-08 16:42:14 C 10 39 33.20 -00 12 19.5 m 428
2003-03-08 16:51:12 C 10 39 25.37 -00 12 16.6 m 428
2003-03-08 19:46:06 C 10 37 13.79 -00 15 06.3 J87
2003-03-08 19:47:22 C 10 37 12.71 -00 15 04.9 J87
2003-03-08 19:49:49 C 10 37 10.41 -00 15 04.8 J87
2003-03-09 05:54:02 C 10 27 10.89 -00 11 55.6 17.6 c 704
2003-03-09 05:54:54 C 10 27 09.90 -00 11 55.8 16.9 c 704
2003-03-09 06:13:01 C 10 26 49.02 -00 11 50.0 18.0 c 704
2003-03-09 06:13:53 C 10 26 48.04 -00 11 49.8 17.3 c 704
2003-03-09 06:31:51 C 10 26 27.19 -00 11 43.6 17.9 c 704
2003-03-09 06:32:43 C 10 26 26.25 -00 11 43.7 17.1 c 704
2003-03-09 06:50:53 C 10 26 04.97 -00 11 37.4 18.3 c 704
2003-03-09 06:51:45 C 10 26 04.03 -00 11 37.5 17.3 c 704
2003-03-09 07:10:00 C 10 25 42.46 -00 11 31.2 17.9 c 704
2003-03-09 12:40:35 C 10 19 08.27 -00 05 33.1 m 428
2003-03-09 12:43:00 C 10 19 05.03 -00 05 32.9 m 428
2003-03-09 13:11:33 C 10 18 26.26 -00 05 19.7 m 428
2003-03-09 13:13:58 C 10 18 22.99 -00 05 19.5 m 428
2003-03-09 22:03:45 C 10 05 32.32 -00 06 03.8 c 599
2003-03-09 22:04:52 C 10 05 30.36 -00 06 03.2 c 599
2003-03-09 22:05:59 C 10 05 28.53 -00 06 02.7 c 599
2003-03-09 22:07:06 C 10 05 26.63 -00 06 02.4 c 599
2003-03-09 22:08:13 C 10 05 24.94 -00 06 01.8 c 599
2003-03-09 22:09:19 C 10 05 23.02 -00 06 01.3 c 599
2003-03-09 22:10:25 C 10 05 21.07 -00 06 00.8 c 599
2003-03-09 22:11:33 C 10 05 19.13 -00 06 00.1 c 599
2003-03-09 23:03:09 C 10 03 54.06 -00 06 03.7 d J95
2003-03-09 23:11:33 C 10 03 39.53 -00 05 59.5 d J95
2003-03-09 23:14:29 C 10 03 34.47 -00 05 58.2 d J95
2003-03-10 13:20:41 C 09 34 28.08 +00 03 43.3 m 379
2003-03-10 13:23:36 C 09 34 20.45 +00 03 46.3 m 379
2003-03-10 13:27:55 C 09 34 09.27 +00 03 48.9 m 379
2003-03-10 18:19:27 C 09 21 05.43 +00 06 45.9 d 118
2003-03-10 18:20:27 C 09 21 02.45 +00 06 45.9 d 118
2003-03-10 18:23:57 C 09 20 51.94 +00 06 48.9 d 118
2003-03-10 18:24:41 C 09 20 49.78 +00 06 50.8 d 118
2003-03-10 18:26:27 C 09 20 44.67 +00 06 52.0 d 118
2003-03-10 18:28:16 C 09 20 39.10 +00 06 53.2 d 118
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2003-03-13 19:41:00 -245982.899 10 Hz 2380 -1 -1
2003-03-13 19:50:00 23417151.79 4 us 2380 -1 -1
2003-03-13 20:07:00 23523212.67 0.5 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)