2018 AA4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6164794240 ± 2.00e+00
Semi-major axis (a)2.4791755829 AU ± 3.00e+00
Inclination (i)3.50720703° ± 4.00e+00
Long. of Asc. Node (Ω)114.78716602° ± 5.00e+00
Arg. of Perihelion (ω)323.56726493° ± 6.00e+00
Mean Anomaly (M)10.29089291° ± 1.61e-02
Mean Motion (n)0.2524893600°/day ± 4.58e-01
Perihelion dist (q)0.95081450 AU ± 5.09e+00
Aphelion dist (Q)4.00753710 AU ± 6.94e+00
Orbital Period3.90356110 yr ± 7.09e+00
Physical Parameters
H (abs. magnitude)25.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.418″
Uncertainty2
Orbit TypeApollo
MOID0.012020 AU
Observations Used66
Oppositions1
Arc Total2018-2018
First Observation Used
Last Observation Used2018-01-28
Observations (67)
Date Type RA Dec Mag Band Observatory
2018-01-15 09:14:40 C 09 23 40.30 +16 15 11.3 o 691
2018-01-15 09:25:17 C 09 23 44.22 +16 15 45.6 o 691
2018-01-15 09:36:01 C 09 23 48.17 +16 16 20.1 o 691
2018-01-17 09:58:02 C 09 39 17.13 +18 09 33.7 U I52
2018-01-17 09:59:08 C 09 39 17.34 +18 09 35.3 U I52
2018-01-17 10:00:14 C 09 39 17.52 +18 09 36.8 U I52
2018-01-18 07:57:29 C 09 43 57.14 +18 42 33.5 U I52
2018-01-18 07:58:35 C 09 43 57.32 +18 42 35.1 U I52
2018-01-18 08:01:12 C 09 43 57.69 +18 42 37.9 U I52
2018-01-18 08:05:14 C 09 43 58.29 +18 42 44.1 U I52
2018-01-20 07:08:14 C 09 50 54.86 +19 33 06.6 U I52
2018-01-20 07:10:38 C 09 50 55.06 +19 33 09.6 U I52
2018-01-20 07:13:02 C 09 50 55.30 +19 33 12.5 U I52
2018-01-20 07:15:27 C 09 50 55.43 +19 33 14.7 U I52
2018-01-28 06:29:03 C 10 01 56.44 +21 04 12.8 u H21
2018-01-28 06:53:52 C 10 01 56.59 +21 04 19.6 u H21
2018-01-28 07:17:49 C 10 01 56.75 +21 04 26.0 u H21