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
2018-03-08 08:50:40 C 10 13 45.005 -27 40 38.73 U F51
2018-03-08 09:04:45 C 10 13 42.958 -27 40 12.23 U F51
2018-03-08 09:32:40 C 10 13 38.886 -27 39 19.49 U F51
2018-03-09 05:40:07 C 10 11 21.38 -26 57 32.9 U W87
2018-03-09 05:49:55 C 10 11 19.98 -26 57 11.7 U W87
2018-03-09 05:59:44 C 10 11 18.59 -26 56 50.3 U W87
2018-03-10 11:52:51 C 10 07 57.46 -25 51 01.9 U 474
2018-03-10 11:56:15 C 10 07 56.93 -25 50 54.0 U 474
2018-03-10 12:03:03 C 10 07 55.94 -25 50 38.3 U 474
2018-03-13 00:46:07 C 10 00 43.16 -23 14 28.6 U 807
2018-03-13 00:52:07 C 10 00 42.22 -23 14 11.4 U 807
2018-03-13 00:58:18 C 10 00 41.25 -23 13 54.5 U 807
2018-03-14 05:58:18 C 09 56 50.309 -21 46 49.51 U W85
2018-03-14 06:04:47 C 09 56 49.291 -21 46 28.20 U W85
2018-03-14 06:11:18 C 09 56 48.259 -21 46 06.71 U W85
2018-03-14 06:17:51 C 09 56 47.230 -21 45 45.29 U W85
2018-03-14 06:24:21 C 09 56 46.231 -21 45 23.80 U W85
2018-03-14 06:30:53 C 09 56 45.230 -21 45 02.20 U W85
2018-03-14 06:37:23 C 09 56 44.230 -21 44 40.81 U W85
2018-03-14 06:43:53 C 09 56 43.241 -21 44 19.00 U W85
2018-03-14 06:50:26 C 09 56 42.230 -21 43 57.29 U W85
2018-03-14 06:56:57 C 09 56 41.251 -21 43 35.80 U W85
2018-03-14 07:03:27 C 09 56 40.279 -21 43 14.09 U W85
2018-03-16 05:18:35 C 09 50 44.65 -19 08 28.5 o 691
2018-03-16 05:30:01 C 09 50 42.57 -19 07 47.5 o 691
2018-03-16 05:41:27 C 09 50 40.62 -19 07 05.2 o 691
2018-03-17 02:28:50 C 09 47 53.03 -17 45 55.2 U 807
2018-03-17 02:30:57 C 09 47 52.62 -17 45 46.9 U 807
2018-03-17 02:33:42 C 09 47 52.13 -17 45 36.5 U 807
2018-03-17 10:49:56 C 09 46 43.28 -17 12 17.3 U 474
2018-03-17 10:52:30 C 09 46 42.86 -17 12 06.3 U 474
2018-03-17 10:55:04 C 09 46 42.34 -17 11 56.3 U 474
2018-03-17 10:57:38 C 09 46 41.96 -17 11 46.0 U 474
2018-03-19 06:05:53 C 09 40 39.00 -14 10 49.2 U I52
2018-03-19 06:10:47 C 09 40 38.08 -14 10 26.8 U I52
2018-03-19 06:13:31 C 09 40 37.58 -14 10 15.0 U I52
2018-03-19 07:11:56 C 09 40 27.06 -14 05 44.8 o 691
2018-03-19 07:21:33 C 09 40 25.29 -14 05 00.2 o 691
2018-03-19 07:31:10 C 09 40 23.62 -14 04 15.9 o 691
2018-03-20 05:13:07 C 09 37 22.38 -12 22 28.5 U I52
2018-03-20 05:14:30 C 09 37 22.17 -12 22 22.4 U I52
2018-03-20 05:15:55 C 09 37 21.95 -12 22 14.3 U I52
2018-03-20 07:59:48 C 09 37 03.47 -12 05 23.0 U 474
2018-03-20 08:04:05 C 09 37 02.76 -12 05 02.2 U 474
2018-03-20 08:08:22 C 09 37 01.97 -12 04 41.5 U 474
2018-03-20 08:12:40 C 09 37 01.24 -12 04 20.6 U 474
2018-03-21 04:53:42 C 09 33 56.40 -10 24 17.9 U G96
2018-03-21 05:01:44 C 09 33 54.87 -10 23 37.4 U G96
2018-03-21 05:17:50 C 09 33 51.92 -10 22 11.9 U G96
2018-03-22 04:57:09 C 09 30 22.54 -08 16 37.6 U I52