2018 AL18

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2340336432 ± 7.71e-08
Semi-major axis (a)1.2852069892 AU ± 1.69e-08
Inclination (i)16.78783419° ± 1.14e-05
Long. of Asc. Node (Ω)313.26032530° ± 1.23e-05
Arg. of Perihelion (ω)94.09425260° ± 2.29e-05
Mean Anomaly (M)195.30336793° ± 4.74e-05
Mean Motion (n)0.6764764125°/day ± 1.33e-08
Perihelion dist (q)0.98442532 AU ± 1.00e-07
Aphelion dist (Q)1.58598866 AU ± 1.01e-07
Orbital Period1.45700022 yr ± 2.87e-08
Physical Parameters
H (abs. magnitude)21.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.316″
Uncertainty0
Orbit TypeApollo
MOID0.162084 AU
Observations Used71
Oppositions1
Arc Total2014-2018
First Observation Used2014-07-25
Last Observation Used2018-04-15
Observations (75)
Date Type RA Dec Mag Band Observatory
2018-02-05 08:32:31 C 11 05 57.16 -08 30 43.6 o 691
2018-02-06 10:45:42 C 11 02 25.26 -09 06 09.2 o 291
2018-02-06 10:57:04 C 11 02 23.64 -09 06 24.0 o 291
2018-02-06 11:08:25 C 11 02 22.07 -09 06 39.8 o 291
2018-02-07 10:48:03 C 10 59 08.79 -09 37 39.5 o 691
2018-02-07 11:15:29 C 10 59 04.85 -09 38 14.5 o 691
2018-02-07 11:43:12 C 10 59 00.92 -09 38 50.5 o 691
2018-02-20 02:49:06 C 10 16 44.86 -14 38 35.0 u 807
2018-02-20 02:57:12 C 10 16 43.72 -14 38 40.7 u 807
2018-02-20 03:03:51 C 10 16 42.81 -14 38 45.5 u 807
2018-02-25 02:13:54 C 10 01 28.81 -15 44 17.7 U 807
2018-02-25 02:20:24 C 10 01 28.04 -15 44 21.2 U 807
2018-02-25 02:26:30 C 10 01 27.26 -15 44 23.1 U 807
2018-03-05 02:28:02 C 09 40 57.18 -16 36 34.8 U 807
2018-03-05 02:35:51 C 09 40 56.42 -16 36 35.8 U 807
2018-03-05 02:43:54 C 09 40 55.66 -16 36 36.9 U 807
2018-03-17 01:25:52 C 09 21 22.56 -16 31 28.2 u 807
2018-03-17 01:42:41 C 09 21 21.73 -16 31 26.2 u 807
2018-03-17 01:59:29 C 09 21 20.90 -16 31 24.7 u 807
2018-04-14 01:34:15 C 09 19 17.58 -14 33 18.4 U 807
2018-04-14 02:07:04 C 09 19 18.47 -14 33 13.1 U 807
2018-04-14 02:40:47 C 09 19 19.36 -14 33 07.5 U 807
2018-04-15 01:54:39 C 09 20 01.90 -14 29 40.6 U 807
2018-04-15 02:21:21 C 09 20 02.69 -14 29 36.5 U 807
2018-04-15 02:47:31 C 09 20 03.46 -14 29 32.0 U 807