1999 AF4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6078606057 ± 6.32e-09
Semi-major axis (a)2.8500347383 AU ± 7.50e-09
Inclination (i)12.67624326° ± 1.91e-06
Long. of Asc. Node (Ω)294.21953514° ± 2.50e-06
Arg. of Perihelion (ω)155.75786447° ± 5.78e-06
Mean Anomaly (M)233.55893618° ± 3.30e-06
Mean Motion (n)0.2048505083°/day ± 8.08e-10
Perihelion dist (q)1.11761090 AU ± 1.83e-08
Aphelion dist (Q)4.58245858 AU ± 2.17e-08
Orbital Period4.81144173 yr ± 1.90e-08
Physical Parameters
H (abs. magnitude)18.48
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.230″
Uncertainty0
Orbit TypeAmor
MOID0.151225 AU
Observations Used493
Oppositions20
Arc Total1998-2023
First Observation Used1999-01-09
Last Observation Used2023-05-18
Observations (518)
Date Type RA Dec Mag Band Observatory
2018-01-10 22:25:32 C 08 08 37.67 +27 37 48.2 U J69
2018-01-10 22:31:24 C 08 08 38.19 +27 37 13.5 U J69
2018-01-10 22:37:18 C 08 08 38.70 +27 36 38.6 U J69
2018-01-10 22:43:11 C 08 08 39.21 +27 36 03.9 U J69
2018-01-12 07:30:31 C 08 11 41.31 +24 26 03.4 U 703
2018-01-12 07:38:05 C 08 11 41.82 +24 25 20.5 U 703
2018-01-12 07:45:39 C 08 11 42.31 +24 24 37.2 U 703
2018-01-12 07:53:13 C 08 11 42.85 +24 23 54.3 U 703
2018-01-12 23:27:20 C 08 13 01.95 +22 57 01.3 q 160
2018-01-12 23:29:30 C 08 13 02.09 +22 56 49.4 q 160
2018-01-12 23:31:41 C 08 13 02.24 +22 56 37.5 q 160
2018-01-13 03:17:17 C 08 13 24.06 +22 36 03.2 r G48
2018-01-13 03:18:18 C 08 13 24.13 +22 35 57.8 r G48
2018-01-13 03:19:17 C 08 13 24.21 +22 35 52.5 r G48
2018-01-13 03:20:19 C 08 13 24.28 +22 35 46.9 r G48
2018-01-13 03:21:21 C 08 13 24.36 +22 35 41.5 r G48
2018-01-13 03:22:24 C 08 13 24.43 +22 35 35.8 r G48
2018-01-13 03:23:23 C 08 13 24.51 +22 35 30.5 r G48
2018-01-13 03:24:23 C 08 13 24.59 +22 35 25.0 r G48
2018-01-13 03:25:24 C 08 13 24.66 +22 35 19.7 r G48
2018-01-13 07:19:45 C 08 13 40.38 +22 14 21.2 U G96
2018-01-13 07:27:10 C 08 13 40.84 +22 13 41.2 U G96
2018-01-13 07:34:37 C 08 13 41.29 +22 13 01.3 U G96
2018-01-13 07:42:03 C 08 13 41.75 +22 12 21.0 U G96
2018-01-13 22:50:36 C 08 14 52.36 +20 51 32.1 q 160
2018-01-13 22:53:44 C 08 14 52.54 +20 51 16.0 q 160
2018-01-13 22:56:54 C 08 14 52.74 +20 50 59.3 q 160
2018-01-14 19:29:18 C 08 16 23.34 +19 05 19.4 q C23
2018-01-14 19:33:36 C 08 16 23.63 +19 04 57.7 q C23
2018-01-14 19:37:56 C 08 16 23.90 +19 04 36.5 q C23
2018-01-15 07:03:34 C 08 17 08.63 +18 08 24.1 U 703
2018-01-15 07:11:10 C 08 17 09.01 +18 07 47.4 U 703
2018-01-15 07:18:46 C 08 17 09.39 +18 07 10.3 U 703
2018-01-15 07:26:22 C 08 17 09.78 +18 06 34.1 U 703
2018-01-15 07:33:58 C 08 17 10.17 +18 05 56.4 U 703
2018-01-15 07:43:23 C 08 17 10.64 +18 05 10.6 U 703
2018-01-15 07:50:59 C 08 17 10.99 +18 04 33.0 U 703
2018-01-15 07:58:35 C 08 17 11.37 +18 03 55.6 U 703
2018-01-15 12:10:24 C 08 17 26.58 +17 43 43.9 U T08
2018-01-15 12:27:36 C 08 17 27.39 +17 42 20.2 U T08
2018-01-15 12:40:36 C 08 17 28.02 +17 41 16.9 U T08
2018-01-15 12:53:50 C 08 17 28.66 +17 40 12.5 U T08
2018-01-17 00:07:41 C 08 19 40.02 +14 56 03.1 U Z80
2018-01-17 00:09:33 C 08 19 40.01 +14 55 54.1 U Z80
2018-01-17 00:11:26 C 08 19 40.10 +14 55 46.8 U Z80
2018-01-17 00:13:19 C 08 19 40.21 +14 55 38.0 U Z80
2018-01-17 00:15:12 C 08 19 40.26 +14 55 29.3 U Z80
2018-01-17 00:17:16 C 08 19 40.32 +14 55 20.4 U Z80
2018-01-17 12:47:42 C 08 20 20.36 +14 00 55.0 U T05
2018-01-17 12:54:31 C 08 20 20.63 +14 00 25.4 U T05