2018 ER1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.0924821027 ± 1.78e-05
Semi-major axis (a)1.0102397768 AU ± 6.24e-06
Inclination (i)6.38654835° ± 1.28e-03
Long. of Asc. Node (Ω)187.81041362° ± 2.66e-04
Arg. of Perihelion (ω)101.33460266° ± 5.39e-03
Mean Anomaly (M)105.68252918° ± 4.51e-03
Mean Motion (n)0.9706788786°/day ± 8.99e-06
Perihelion dist (q)0.91681068 AU ± 1.89e-05
Aphelion dist (Q)1.10366888 AU ± 1.93e-05
Orbital Period1.01539892 yr ± 9.40e-06
Physical Parameters
H (abs. magnitude)25.72
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.312″
Uncertainty1
Orbit TypeApollo
MOID0.013876 AU
Observations Used61
Oppositions1
Arc Total2018-2018
First Observation Used2018-03-08
Last Observation Used2018-04-05
Observations (64)
Date Type RA Dec Mag Band Observatory
2018-03-22 04:58:32 C 09 30 22.24 -08 16 29.5 U I52
2018-03-22 04:59:55 C 09 30 21.99 -08 16 21.7 U I52
2018-03-26 23:53:42 C 09 12 37.01 +03 40 57.8 U 807
2018-03-26 23:57:12 C 09 12 36.28 +03 41 22.1 U 807
2018-04-04 05:41:01 C 08 36 37.36 +28 35 19.5 o 291
2018-04-04 05:45:59 C 08 36 36.10 +28 35 56.5 o 291
2018-04-04 05:50:57 C 08 36 34.86 +28 36 34.6 o 291
2018-04-05 05:41:41 C 08 31 35.08 +31 38 51.5 o 291
2018-04-05 05:45:23 C 08 31 34.11 +31 39 19.1 o 291
2018-04-05 05:49:06 C 08 31 33.11 +31 39 46.0 o 291
2018-04-05 05:56:57 C 08 31 31.05 +31 40 40.0 U I52
2018-04-05 05:59:21 C 08 31 30.39 +31 40 57.3 U I52
2018-04-05 06:46:29 C 08 31 18.34 +31 46 38.7 U I52
2018-04-05 06:48:53 C 08 31 17.81 +31 46 55.4 U I52