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
2003-03-10 18:32:49 C 09 20 27.68 +00 07 23.1 c 599
2003-03-10 18:33:55 C 09 20 23.98 +00 07 24.0 c 599
2003-03-10 18:35:01 C 09 20 20.63 +00 07 25.2 c 599
2003-03-10 18:36:07 C 09 20 17.27 +00 07 25.5 c 599
2003-03-10 18:37:13 C 09 20 14.36 +00 07 26.8 c 599
2003-03-10 18:39:27 C 09 20 07.40 +00 07 29.5 c 599
2003-03-10 18:40:33 C 09 20 03.94 +00 07 30.0 c 599
2003-03-10 22:42:41 C 09 07 00.84 +00 11 22.5 d 170
2003-03-10 22:45:39 C 09 06 50.48 +00 11 26.0 d 170
2003-03-10 22:47:39 C 09 06 43.65 +00 11 26.6 d 170
2003-03-10 22:49:33 C 09 06 37.11 +00 11 30.3 d 170
2003-03-11 03:50:39 C 08 48 20.65 +00 17 45.6 c 448
2003-03-11 03:53:26 C 08 48 09.34 +00 17 48.9 c 448
2003-03-11 03:57:03 C 08 47 54.50 +00 17 53.0 c 448
2003-03-11 04:00:44 C 08 47 39.33 +00 17 57.9 c 448
2003-03-11 04:01:49 C 08 47 34.99 +00 17 59.2 c 448
2003-03-11 05:48:29 C 08 40 09.06 +00 19 55.7 c 670
2003-03-11 05:50:45 C 08 39 59.21 +00 19 59.1 c 670
2003-03-11 05:52:33 C 08 39 51.42 +00 20 00.8 c 670
2003-03-11 05:56:03 C 08 39 36.15 +00 20 05.5 c 670
2003-03-11 05:57:07 C 08 39 31.48 +00 20 07.3 c 670
2003-03-11 06:00:42 C 08 39 15.81 +00 20 10.6 c 670
2003-03-11 06:02:30 C 08 39 07.94 +00 20 13.3 c 670
2003-03-11 19:19:54 C 07 29 43.47 +00 38 32.8 o 620
2003-03-11 19:23:32 C 07 29 20.34 +00 38 36.6 o 620
2003-03-11 19:26:58 C 07 28 58.45 +00 38 43.0 o 620
2003-03-11 19:30:28 C 07 28 36.03 +00 38 48.1 o 620
2003-03-11 20:53:49 C 07 19 39.17 +00 39 41.9 d J95
2003-03-11 20:55:17 C 07 19 29.61 +00 39 43.4 d J95
2003-03-11 21:05:31 C 07 18 22.34 +00 39 59.2 d J95
2003-03-11 21:06:52 C 07 18 13.59 +00 40 02.0 d J95
2003-03-12 03:02:00 C 06 37 57.05 +00 51 05.1 c 670
2003-03-12 03:04:35 C 06 37 38.23 +00 51 09.0 c 670
2003-03-12 03:18:43 C 06 35 55.54 +00 51 27.8 c 670
2003-03-12 03:27:36 C 06 34 45.79 +00 52 00.9 m 333
2003-03-12 03:28:24 C 06 34 39.75 +00 52 02.1 m 333
2003-03-12 03:29:27 C 06 34 32.11 +00 52 04.2 m 333
2003-03-12 03:30:01 C 06 34 27.94 +00 52 04.3 m 333
2003-03-12 03:31:58 C 06 34 18.53 +00 51 48.3 c 670
2003-03-12 03:45:29 C 06 32 39.79 +00 52 07.3 c 670
2003-03-12 03:58:09 C 06 31 06.69 +00 52 26.3 c 670
2003-03-12 04:12:11 C 06 29 23.86 +00 52 45.8 c 670
2009-11-01 09:48:06 C 23 25 13.345 -03 48 06.36 V T12
2009-11-01 09:50:58 C 23 25 14.545 -03 47 58.75 V T12
2009-11-01 09:54:14 C 23 25 15.915 -03 47 50.11 V T12
2009-11-09 08:44:56 C 00 15 00.220 +01 19 53.62 V T12
2022-02-25 04:49:50 C 09 54 10.40 +10 34 16.4 V 291
2022-02-25 05:04:56 C 09 54 06.95 +10 34 32.4 V 291
2022-02-25 05:22:24 C 09 54 02.94 +10 34 51.4 V 291
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)