2018 AD4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2187992044 ± 2.93e-07
Semi-major axis (a)0.9287431762 AU ± 1.21e-08
Inclination (i)13.57089638° ± 3.07e-05
Long. of Asc. Node (Ω)112.15830363° ± 8.80e-06
Arg. of Perihelion (ω)199.15432991° ± 6.20e-05
Mean Anomaly (M)73.19532067° ± 5.71e-05
Mean Motion (n)1.1012066424°/day ± 2.15e-08
Perihelion dist (q)0.72553491 AU ± 2.72e-07
Aphelion dist (Q)1.13195144 AU ± 2.72e-07
Orbital Period0.89504208 yr ± 1.75e-08
Physical Parameters
H (abs. magnitude)22.72
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.306″
Uncertainty0
Orbit TypeAten
MOID0.114376 AU
Observations Used82
Oppositions1
Arc Total2017-2025
First Observation Used2017-12-14
Last Observation Used2025-12-22
Observations (83)
Date Type RA Dec Mag Band Observatory
2018-01-20 09:52:53 C 08 18 46.215 +34 27 37.76 U T12
2018-01-20 09:54:35 C 08 18 45.822 +34 27 44.18 U T12
2018-01-24 03:35:06 C 07 59 18.08 +39 38 03.8 U I52
2018-01-24 03:35:47 C 07 59 17.95 +39 38 06.4 U I52
2018-01-24 03:36:10 C 07 59 17.85 +39 38 06.8 U I52
2018-01-25 06:00:31 C 07 53 26.07 +40 59 38.8 U G96
2018-01-25 06:07:58 C 07 53 24.31 +41 00 01.2 U G96
2018-01-25 06:15:26 C 07 53 22.56 +41 00 23.7 U G96
2018-01-25 06:22:52 C 07 53 20.76 +41 00 46.2 U G96
2018-01-27 03:28:12 C 07 43 28.83 +43 08 07.4 U I52
2018-01-27 03:28:49 C 07 43 28.72 +43 08 09.7 U I52
2018-01-27 03:29:27 C 07 43 28.55 +43 08 12.5 U I52
2018-02-04 09:32:23 C 07 03 13.86 +49 51 11.5 U I52
2018-02-04 09:33:29 C 07 03 13.70 +49 51 13.6 U I52
2018-02-04 09:34:35 C 07 03 13.37 +49 51 14.5 U I52
2018-02-04 09:35:40 C 07 03 13.23 +49 51 15.1 U I52
2018-02-05 05:09:07 C 06 59 47.66 +50 19 10.3 u H21
2018-02-05 05:15:37 C 06 59 46.38 +50 19 18.9 u H21
2018-02-05 05:23:58 C 06 59 44.77 +50 19 30.2 u H21
2018-02-07 04:16:36 C 06 51 57.25 +51 18 58.4 U G96
2018-02-07 04:24:14 C 06 51 55.97 +51 19 07.2 U G96
2018-02-07 04:31:52 C 06 51 54.58 +51 19 16.1 U G96
2018-02-08 04:19:38 C 06 48 12.16 +51 45 50.7 U I52
2018-02-08 04:24:04 C 06 48 11.40 +51 45 55.4 U I52
2018-02-08 04:25:52 C 06 48 11.09 +51 45 57.3 U I52
2018-02-08 04:27:40 C 06 48 10.79 +51 45 59.5 U I52
2025-12-20 01:57:34 C 01 26 47.820 -35 15 10.20 V 807
2025-12-20 02:18:41 C 01 26 51.180 -35 13 35.40 V 807
2025-12-20 02:40:19 C 01 26 54.590 -35 11 56.40 V 807
2025-12-22 02:32:32 C 01 34 45.296 -31 38 02.00 V I52
2025-12-22 02:46:59 C 01 34 47.260 -31 36 59.30 V I52
2025-12-22 03:01:27 C 01 34 49.487 -31 35 52.94 V I52
2025-12-22 03:15:58 C 01 34 51.575 -31 34 47.86 V I52