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
2017-10-10 07:06:31 C 00 56 21.55 +48 00 18.4 U G96
2017-10-10 07:15:16 C 00 56 21.12 +48 00 28.5 U G96
2017-10-10 07:23:10 C 00 56 20.77 +48 00 37.5 U G96
2017-10-10 07:30:51 C 00 56 20.42 +48 00 46.3 U G96
2017-10-14 10:34:20 C 00 52 09.44 +49 54 09.1 L T05
2017-10-14 10:53:31 C 00 52 08.40 +49 54 30.6 L T05
2017-10-14 11:18:16 C 00 52 07.09 +49 54 57.7 L T05
2017-10-14 11:30:25 C 00 52 06.41 +49 55 11.6 L T05
2017-10-18 11:01:43 C 00 47 26.17 +51 42 36.1 T05
2017-10-18 11:03:41 C 00 47 26.05 +51 42 38.4 T05
2017-10-18 11:22:21 C 00 47 24.95 +51 42 58.8 T05
2017-10-18 11:24:20 C 00 47 24.81 +51 43 01.1 T05
2017-10-18 11:31:34 C 00 47 24.41 +51 43 08.4 T05
2017-10-18 11:48:50 C 00 47 23.46 +51 43 27.4 T05
2017-10-18 11:50:09 C 00 47 23.23 +51 43 29.6 T05
2017-10-24 21:28:41 C 00 38 51.86 +54 30 25.9 U 130
2017-10-24 21:32:23 C 00 38 51.68 +54 30 29.3 U 130
2017-10-24 21:36:03 C 00 38 51.43 +54 30 33.6 U 130
2017-10-24 21:39:43 C 00 38 51.24 +54 30 37.5 U 130
2017-10-30 09:57:39 C 00 30 56.28 +56 48 04.7 T05
2017-10-30 09:59:37 C 00 30 56.18 +56 48 06.4 T05
2017-10-30 10:01:36 C 00 30 56.01 +56 48 08.5 T05
2017-10-30 10:04:15 C 00 30 55.80 +56 48 11.3 T05
2017-10-30 10:05:33 C 00 30 55.71 +56 48 12.3 T05
2017-10-30 10:22:40 C 00 30 54.53 +56 48 29.0 T05
2017-10-31 00:10:58 C 00 30 08.02 +57 02 20.0 U W34
2017-10-31 00:28:18 C 00 30 06.92 +57 02 38.7 U W34
2017-10-31 00:48:22 C 00 30 05.49 +57 02 59.8 U W34
2017-11-19 09:08:26 C 00 10 25.65 +64 35 07.1 U T05
2017-11-19 09:22:26 C 00 10 25.30 +64 35 20.0 U T05
2017-11-19 09:46:48 C 00 10 24.99 +64 35 42.0 U T05
2017-11-19 09:50:45 C 00 10 24.86 +64 35 44.1 U T05
2017-11-21 08:35:12 C 00 10 35.62 +65 22 49.7 U T08
2017-11-21 08:48:32 C 00 10 35.45 +65 23 02.4 U T08
2017-11-21 08:49:51 C 00 10 35.50 +65 23 03.4 U T08
2017-11-21 09:12:34 C 00 10 35.34 +65 23 24.9 U T08
2017-11-25 21:41:11 C 00 14 11.77 +67 17 35.8 U Z80
2017-11-25 21:44:41 C 00 14 11.98 +67 17 40.2 U Z80
2017-11-25 21:48:10 C 00 14 12.08 +67 17 43.5 U Z80
2017-11-25 21:51:40 C 00 14 12.18 +67 17 46.6 U Z80
2017-11-25 21:55:12 C 00 14 12.38 +67 17 50.3 U Z80
2017-11-25 21:58:41 C 00 14 12.50 +67 17 54.2 U Z80
2017-11-30 03:23:50 C 00 23 14.52 +69 13 49.3 u H21
2017-11-30 03:27:27 C 00 23 14.90 +69 13 53.3 u H21
2017-11-30 03:30:34 C 00 23 15.21 +69 13 56.9 u H21
2017-11-30 03:33:40 C 00 23 15.53 +69 14 00.4 u H21
2017-11-30 03:36:46 C 00 23 15.85 +69 14 03.9 u H21
2017-11-30 03:39:52 C 00 23 16.17 +69 14 07.4 u H21
2017-11-30 03:42:27 C 00 23 16.43 +69 14 10.2 u H21
2017-11-30 17:45:29 C 00 25 12.31 +69 30 56.3 V C95