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
2018-02-03 11:50:40 C 08 33 44.03 -03 42 17.8 U T08
2018-02-03 12:03:55 C 08 33 44.19 -03 42 35.6 U T08
2018-02-03 12:17:01 C 08 33 44.37 -03 42 53.1 U T08
2018-02-04 14:50:31 C 08 34 20.74 -04 17 15.9 q D29
2018-02-04 15:14:43 C 08 34 21.05 -04 17 45.7 q D29
2018-02-04 15:38:53 C 08 34 21.36 -04 18 15.6 q D29
2018-02-06 07:59:28 C 08 35 12.30 -05 04 48.7 U 703
2018-02-06 08:07:12 C 08 35 12.41 -05 04 57.0 U 703
2018-02-06 08:14:57 C 08 35 12.51 -05 05 05.4 U 703
2018-02-06 08:22:40 C 08 35 12.61 -05 05 13.7 U 703
2018-02-07 11:07:53 C 08 35 46.40 -05 32 40.9 U T08
2018-02-07 11:22:29 C 08 35 46.57 -05 32 55.2 U T08
2018-02-07 11:37:01 C 08 35 46.76 -05 33 09.6 U T08
2018-02-07 11:51:47 C 08 35 46.96 -05 33 23.9 U T08
2018-02-07 20:19:51 C 08 35 59.28 -05 41 48.1 t L04
2018-02-07 20:47:59 C 08 35 59.68 -05 42 14.8 t L04
2018-02-07 22:15:58 C 08 36 01.41 -05 43 39.4 q C23
2018-02-07 22:21:22 C 08 36 01.46 -05 43 45.2 q C23
2018-02-07 22:26:45 C 08 36 01.59 -05 43 49.8 q C23
2018-02-26 21:45:41 C 08 47 07.26 -09 00 03.4 18.2 q J43
2018-02-26 21:59:47 C 08 47 07.57 -09 00 04.5 18.1 q J43
2018-02-26 22:13:51 C 08 47 07.93 -09 00 06.1 18.3 q J43
2018-02-26 22:27:56 C 08 47 08.27 -09 00 07.4 18.3 q J43
2018-03-09 05:26:07 C 08 55 26.09 -09 00 42.7 U 703
2018-03-09 05:33:44 C 08 55 26.28 -09 00 42.3 U 703
2018-03-09 05:41:21 C 08 55 26.62 -09 00 41.5 U 703
2018-03-09 05:48:57 C 08 55 26.86 -09 00 41.4 U 703
2018-03-14 03:24:48 C 09 00 01.05 -08 50 45.2 U 703
2018-03-14 03:33:00 C 09 00 01.30 -08 50 45.0 U 703
2018-03-14 03:41:12 C 09 00 01.57 -08 50 44.2 U 703
2018-03-14 03:49:24 C 09 00 01.94 -08 50 43.3 U 703
2018-03-20 04:58:27 C 09 06 11.15 -08 34 17.9 U 703
2018-03-20 05:06:34 C 09 06 11.40 -08 34 17.3 U 703
2018-03-20 05:14:42 C 09 06 11.81 -08 34 17.0 U 703
2018-03-20 05:22:50 C 09 06 12.14 -08 34 15.3 U 703
2018-03-21 04:22:34 C 09 07 14.07 -08 31 26.3 U G96
2018-03-21 04:30:38 C 09 07 14.32 -08 31 26.2 U G96
2018-03-21 04:38:44 C 09 07 14.63 -08 31 24.5 U G96
2018-03-21 04:46:50 C 09 07 14.96 -08 31 24.0 U G96
2018-04-16 04:33:29 C 09 39 16.03 -07 28 55.3 U G96
2018-04-16 04:40:55 C 09 39 16.47 -07 28 54.7 U G96
2018-04-16 04:48:21 C 09 39 16.86 -07 28 54.7 U G96
2022-09-24 14:32:31 C 08 37 47.005 +25 17 13.05 U F51
2022-09-24 14:39:26 C 08 37 48.190 +25 17 05.65 U F51
2022-09-24 14:46:26 C 08 37 49.420 +25 16 58.45 U F51
2022-09-24 14:53:16 C 08 37 50.598 +25 16 51.38 U F51
2022-10-24 14:50:20 C 10 28 02.322 +10 50 24.24 U F51
2022-10-24 14:56:48 C 10 28 03.173 +10 50 16.07 U F51
2022-10-24 15:03:17 C 10 28 04.017 +10 50 08.05 U F51
2022-10-27 11:27:06 C 10 36 55.674 +09 23 41.57 V V00