2018 AJ

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3063747217 ± 1.28e-07
Semi-major axis (a)1.4208428661 AU ± 2.57e-07
Inclination (i)5.66655508° ± 2.72e-06
Long. of Asc. Node (Ω)303.56868365° ± 1.50e-06
Arg. of Perihelion (ω)195.43686013° ± 1.26e-05
Mean Anomaly (M)215.82256144° ± 4.55e-04
Mean Motion (n)0.5819600862°/day ± 1.58e-07
Perihelion dist (q)0.98553253 AU ± 2.55e-07
Aphelion dist (Q)1.85615320 AU ± 3.82e-07
Orbital Period1.69363210 yr ± 4.60e-07
Physical Parameters
H (abs. magnitude)24.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.280″
Uncertainty0
Orbit TypeApollo
MOID0.007875 AU
Observations Used100
Radar Obs Used3
Oppositions1
Arc Total2018-2018
First Observation Used2018-01-05
Last Observation Used2018-01-27
Observations (103)
Date Type RA Dec Mag Band Observatory
2018-01-19 21:47:16 C 08 44 11.04 +44 55 50.2 U Z80
2018-01-19 21:49:11 C 08 44 13.35 +44 55 25.2 U Z80
2018-01-20 04:16:08 C 08 51 59.88 +43 22 13.9 U I89
2018-01-20 04:21:21 C 08 52 06.33 +43 20 48.4 U I89
2018-01-20 04:26:36 C 08 52 12.81 +43 19 21.7 U I89
2018-01-20 04:45:40 C 08 53 40.74 +43 15 19.2 U H06
2018-01-20 05:05:05 C 08 54 04.53 +43 10 35.6 U H06
2018-01-20 05:24:34 C 08 54 28.29 +43 05 47.9 U H06
2018-01-20 10:55:12 C 09 01 39.498 +41 38 41.04 U F51
2018-01-20 11:11:26 C 09 01 58.515 +41 34 06.48 U F51
2018-01-20 11:27:33 C 09 02 17.379 +41 29 31.30 U F51
2018-01-20 12:35:21 C 09 03 36.31 +41 09 53.8 U T08
2018-01-20 12:52:04 C 09 03 56.10 +41 04 52.7 U T08
2018-01-20 12:59:09 C 09 04 04.50 +41 02 44.9 U T08
2018-01-20 13:18:35 C 09 04 27.71 +40 56 49.8 U T08
2018-01-22 00:29:49 C 09 54 25.81 +27 41 24.5 q 160
2018-01-22 00:30:48 C 09 54 27.05 +27 40 58.2 q 160
2018-01-22 00:31:47 C 09 54 28.28 +27 40 30.4 q 160
2018-01-23 01:20:06 C 10 28 53.75 +15 08 23.9 U 204
2018-01-23 01:23:00 C 10 28 57.25 +15 06 49.2 U 204
2018-01-23 01:26:09 C 10 29 01.03 +15 05 07.2 U 204
2018-01-23 01:29:02 C 10 29 04.54 +15 03 32.7 U 204
2018-01-23 01:32:05 C 10 29 08.18 +15 01 54.3 U 204
2018-01-23 21:49:10 C 10 56 13.08 +03 49 57.3 t L04
2018-01-23 21:56:19 C 10 56 21.47 +03 46 02.9 t L04
2018-01-23 22:03:40 C 10 56 30.10 +03 42 00.7 t L04
2018-01-23 23:31:42 C 10 58 18.81 +02 54 14.2 q 160
2018-01-23 23:33:23 C 10 58 20.70 +02 53 18.9 q 160
2018-01-23 23:35:01 C 10 58 22.57 +02 52 25.7 q 160
2018-01-23 23:36:40 C 10 58 24.44 +02 51 32.3 q 160
2018-01-23 23:38:02 C 10 58 26.02 +02 50 46.4 q 160
2018-01-24 02:03:08 C 11 01 08.99 +01 31 20.9 U 204
2018-01-24 02:04:28 C 11 01 10.47 +01 30 37.2 U 204
2018-01-24 02:06:01 C 11 01 12.21 +01 29 45.9 U 204
2018-01-24 02:07:29 C 11 01 13.82 +01 28 58.3 U 204
2018-01-24 02:09:04 C 11 01 15.55 +01 28 06.8 U 204
2018-01-24 06:25:44 C 11 07 07.40 -00 48 04.6 U I52
2018-01-24 06:25:56 C 11 07 07.61 -00 48 10.3 U I52
2018-01-24 06:26:06 C 11 07 07.81 -00 48 15.9 U I52
2018-01-24 06:30:17 C 11 07 12.55 -00 50 30.5 U I52
2018-01-24 07:17:41 C 11 08 05.41 -01 15 49.8 U 703
2018-01-24 07:25:20 C 11 08 13.75 -01 19 53.1 U 703
2018-01-24 07:32:57 C 11 08 22.07 -01 23 56.9 U 703
2018-01-24 07:40:36 C 11 08 30.39 -01 28 00.7 U 703
2018-01-27 11:18:49 C 12 24 43.20 -30 49 21.8 U I52
2018-01-27 11:19:01 C 12 24 43.33 -30 49 24.3 U I52
2018-01-27 11:19:11 C 12 24 43.44 -30 49 27.2 U I52
2018-01-27 11:19:22 C 12 24 43.57 -30 49 29.6 U I52
2018-01-27 12:18:09 C 12 25 23.18 -31 03 40.5 o 691
2018-01-27 12:20:50 C 12 25 24.95 -31 04 18.7 o 691
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2018-01-22 06:25:00 28075.5186 0.2 Hz 2380 -1 -1
2018-01-22 06:33:00 12517215.96 4 us 2380 -1 -1
2018-01-22 06:44:00 12509581.63 0.5 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)