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
2022-10-27 11:34:10 C 10 36 56.531 +09 23 32.82 V V00
2022-10-27 11:41:14 C 10 36 57.452 +09 23 23.78 V V00
2022-10-27 11:48:18 C 10 36 58.334 +09 23 14.96 V V00
2023-03-27 10:59:13 C 12 56 54.605 -30 17 49.55 U F51
2023-03-27 11:14:58 C 12 56 53.663 -30 17 45.57 U F51
2023-03-27 11:30:40 C 12 56 52.722 -30 17 41.68 U F51
2023-03-27 11:46:24 C 12 56 51.775 -30 17 37.71 U F51
2023-03-30 07:23:50 C 12 52 58.60 -29 58 58.7 X W84
2023-03-30 07:28:09 C 12 52 58.35 -29 58 57.3 X W84
2023-03-30 07:32:27 C 12 52 58.08 -29 58 56.0 X W84
2023-03-30 07:36:46 C 12 52 57.84 -29 58 54.9 X W84
2023-04-24 08:22:07 C 12 24 45.546 -25 54 06.33 U F52
2023-04-24 08:37:38 C 12 24 45.012 -25 53 59.42 U F52
2023-04-24 08:53:09 C 12 24 44.477 -25 53 52.12 U F52
2023-04-24 09:08:40 C 12 24 43.977 -25 53 45.05 U F52
2023-05-18 06:28:30 C 12 15 39.657 -21 58 53.52 X F52
2023-05-18 06:44:20 C 12 15 39.633 -21 58 48.27 X F52
2023-05-18 07:00:11 C 12 15 39.610 -21 58 43.00 X F52