2018 EF4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2093320647 ± 2.72e-05
Semi-major axis (a)1.1800517929 AU ± 3.35e-05
Inclination (i)5.47216263° ± 6.57e-04
Long. of Asc. Node (Ω)167.44203532° ± 9.04e-05
Arg. of Perihelion (ω)309.28774024° ± 4.48e-04
Mean Anomaly (M)37.45440065° ± 9.41e-02
Mean Motion (n)0.7688837326°/day ± 3.28e-05
Perihelion dist (q)0.93302911 AU ± 4.16e-05
Aphelion dist (Q)1.42707447 AU ± 5.17e-05
Orbital Period1.28189249 yr ± 5.46e-05
Physical Parameters
H (abs. magnitude)26.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.340″
Uncertainty2
Orbit TypeApollo
MOID0.002182 AU
Observations Used72
Oppositions1
Arc Total2018-2018
First Observation Used2018-03-13
Last Observation Used2018-04-13
Observations (74)
Date Type RA Dec Mag Band Observatory
2018-03-14 20:06:25 C 10 42 17.41 +37 15 28.8 U K51
2018-03-14 20:44:48 C 10 42 52.79 +37 14 24.2 Q K87
2018-03-14 20:57:41 C 10 43 04.68 +37 14 09.9 Q K87
2018-03-14 21:07:42 C 10 43 27.69 +37 15 26.3 U J04
2018-03-14 21:08:12 C 10 43 28.18 +37 15 25.8 U J04
2018-03-14 21:08:42 C 10 43 28.63 +37 15 25.2 U J04
2018-03-14 21:16:03 C 10 43 21.52 +37 13 49.1 Q K87
2018-03-19 06:15:59 C 11 48 58.30 +34 22 31.0 U I52
2018-03-19 06:17:05 C 11 48 58.65 +34 22 29.7 U I52
2018-03-19 06:18:11 C 11 48 58.99 +34 22 27.9 U I52
2018-03-19 06:19:16 C 11 48 59.32 +34 22 26.3 U I52
2018-03-20 05:20:57 C 11 57 00.79 +33 47 54.5 U I52
2018-03-20 05:25:49 C 11 57 02.07 +33 47 48.5 U I52
2018-03-20 05:30:40 C 11 57 03.26 +33 47 43.5 U I52
2018-03-20 05:35:33 C 11 57 04.52 +33 47 37.0 U I52
2018-03-20 07:31:28 C 11 57 31.56 +33 45 10.6 o 711
2018-03-20 07:36:15 C 11 57 32.70 +33 45 03.1 o 711
2018-03-20 07:40:45 C 11 57 33.83 +33 44 56.5 o 711
2018-03-20 10:30:24 C 11 58 17.88 +33 40 21.3 o 291
2018-03-20 10:32:36 C 11 58 18.44 +33 40 17.8 o 291
2018-03-20 10:35:22 C 11 58 19.17 +33 40 12.7 o 291
2018-04-13 09:17:59 C 12 52 37.212 +25 14 00.63 U 568
2018-04-13 09:19:41 C 12 52 37.233 +25 13 59.43 U 568
2018-04-13 09:21:23 C 12 52 37.243 +25 13 58.11 U 568