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
2018-01-13 07:07:19 C 08 49 48.24 +11 50 01.4 U 703
2018-01-13 07:14:55 C 08 49 55.57 +11 51 08.6 U 703
2018-01-13 07:22:30 C 08 50 02.68 +11 52 12.9 U 703
2018-01-13 07:30:06 C 08 50 09.87 +11 53 18.2 U 703
2018-01-13 08:42:49 C 08 51 16.87 +12 03 24.0 U I52
2018-01-13 08:43:00 C 08 51 17.02 +12 03 25.7 U I52
2018-01-13 08:43:10 C 08 51 17.18 +12 03 27.0 U I52
2018-01-13 08:43:21 C 08 51 17.34 +12 03 28.5 U I52
2018-01-13 09:13:21 C 08 51 41.72 +12 07 42.6 o 711
2018-01-13 09:15:45 C 08 51 43.90 +12 08 01.7 o 711
2018-01-13 09:18:14 C 08 51 46.08 +12 08 21.1 o 711
2018-01-13 09:21:39 C 08 51 49.09 +12 08 48.2 o 711
2018-01-13 09:55:12 C 08 52 20.67 +12 12 53.0 U H01
2018-01-13 10:01:37 C 08 52 26.41 +12 13 43.3 U H01
2018-01-13 10:18:14 C 08 52 41.23 +12 15 52.6 U H01
2018-01-13 10:31:02 C 08 52 52.65 +12 17 31.6 U H01
2018-01-13 23:38:55 C 09 04 24.69 +13 46 20.1 q 160
2018-01-13 23:42:02 C 09 04 26.83 +13 46 38.8 q 160
2018-01-13 23:43:35 C 09 04 27.86 +13 46 48.8 q 160
2018-01-13 23:45:10 C 09 04 28.93 +13 46 58.7 q 160
2018-01-13 23:48:15 C 09 04 31.06 +13 47 17.0 q 160
2018-01-13 23:54:03 C 09 04 35.11 +13 47 48.8 18.9 U K63
2018-01-14 00:01:07 C 09 04 39.93 +13 48 30.9 18.8 U K63
2018-01-14 00:06:49 C 09 04 43.80 +13 49 05.1 18.8 U K63
2018-01-14 04:19:15 C 09 07 30.39 +14 12 18.3 U 204
2018-01-14 04:29:41 C 09 07 37.19 +14 13 12.7 U 204
2018-01-14 04:39:50 C 09 07 43.81 +14 14 05.2 U 204
2018-01-14 07:32:31 C 09 10 00.15 +14 30 35.6 U G96
2018-01-14 07:47:21 C 09 10 08.73 +14 31 52.2 U G96
2018-01-14 07:54:46 C 09 10 12.99 +14 32 30.0 U G96
2018-01-14 09:24:48 C 09 11 01.55 +14 40 07.2 o 711
2018-01-14 09:27:11 C 09 11 02.79 +14 40 18.6 o 711
2018-01-14 09:29:51 C 09 11 04.27 +14 40 31.7 o 711
2018-01-14 09:29:58 C 09 11 06.62 +14 40 24.0 U I52
2018-01-14 09:30:14 C 09 11 06.76 +14 40 25.4 U I52
2018-01-14 09:30:29 C 09 11 06.91 +14 40 26.9 U I52
2018-01-14 09:30:45 C 09 11 07.06 +14 40 28.0 U I52
2018-01-14 09:32:33 C 09 11 05.81 +14 40 44.6 o 711
2018-01-14 21:52:40 C 09 18 25.30 +15 33 00.6 q A17
2018-01-14 22:09:38 C 09 18 33.41 +15 34 09.2 q A17
2018-01-14 22:26:33 C 09 18 41.35 +15 35 18.2 q A17
2018-01-14 22:49:10 C 09 18 59.706 +15 38 00.50 U J04
2018-01-14 22:51:40 C 09 19 00.886 +15 38 10.60 U J04
2018-01-14 22:54:11 C 09 19 02.052 +15 38 20.78 U J04
2018-01-15 00:28:28 C 09 19 34.53 +15 43 22.7 o K88
2018-01-15 00:32:07 C 09 19 36.10 +15 43 36.1 o K88
2018-01-15 00:35:45 C 09 19 37.73 +15 43 50.3 o K88
2018-01-15 08:38:54 C 09 23 26.73 +16 13 10.9 U 703
2018-01-15 08:46:40 C 09 23 29.67 +16 13 37.7 U 703
2018-01-15 09:02:54 C 09 23 35.64 +16 14 31.2 U 703