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
1998-10-19 02:04:49 C 23 34 48.93 +39 21 22.6 19.8 a 704
1998-10-19 02:34:01 C 23 34 46.61 +39 21 32.8 20.0 a 704
1998-10-19 04:01:22 C 23 34 39.61 +39 21 59.7 19.7 a 704
1999-01-09 04:18:50 C 02 27 24.73 +34 25 47.0 17.7 a 704
1999-01-09 04:33:59 C 02 27 30.10 +34 25 23.8 18.3 a 704
1999-01-09 04:49:16 C 02 27 35.59 +34 25 02.0 17.8 a 704
1999-01-09 05:04:26 C 02 27 40.93 +34 24 38.5 17.8 a 704
1999-01-09 05:19:48 C 02 27 46.43 +34 24 15.9 18.0 a 704
1999-01-10 10:43:28 C 02 38 37.21 +33 40 33.0 422
1999-01-10 10:49:24 C 02 38 39.29 +33 40 23.4 422
1999-01-10 10:51:06 C 02 38 39.95 +33 40 20.6 422
1999-01-10 10:52:07 C 02 38 40.32 +33 40 19.5 422
1999-01-10 10:53:04 C 02 38 40.62 +33 40 17.8 422
1999-01-10 17:57:23 C 02 41 19.48 +33 28 10.9 540
1999-01-10 18:02:24 C 02 41 21.28 +33 28 03.4 540
1999-01-10 18:05:09 C 02 41 22.29 +33 27 58.9 540
1999-01-10 18:13:58 C 02 41 25.49 +33 27 44.5 540
1999-01-10 18:16:29 C 02 41 26.61 +33 27 40.4 540
1999-01-11 00:03:09 C 02 43 35.71 +33 18 31.3 c 758
1999-01-11 00:05:37 C 02 43 36.55 +33 18 28.0 c 758
1999-01-11 00:08:07 C 02 43 37.49 +33 18 23.4 c 758
1999-01-11 00:10:27 C 02 43 38.32 +33 18 19.2 c 758
1999-01-11 00:19:34 C 02 43 41.56 +33 18 05.2 c 758
1999-01-11 01:20:59 C 02 44 04.83 +33 16 14.2 c 713
1999-01-11 01:35:55 C 02 44 10.24 +33 15 49.8 c 713
1999-01-11 01:46:50 C 02 44 14.16 +33 15 35.9 17.8 a 704
1999-01-11 02:02:12 C 02 44 19.69 +33 15 12.1 17.8 a 704
1999-01-11 02:18:08 C 02 44 24.84 +33 15 00.0 16.3 z 732
1999-01-11 02:18:12 C 02 44 25.54 +33 14 45.6 18.1 a 704
1999-01-11 02:25:21 C 02 44 27.69 +33 14 46.5 16.2 z 732
1999-01-11 02:34:20 C 02 44 31.36 +33 14 18.5 17.7 a 704
1999-01-11 02:50:10 C 02 44 36.94 +33 13 52.5 17.9 a 704
1999-01-11 04:26:24 C 02 45 11.00 +33 11 21.9 16.3 z 732
1999-01-11 17:39:57 C 02 50 09.35 +32 48 41.0 046
1999-01-11 17:41:00 C 02 50 09.66 +32 48 38.7 046
1999-01-12 02:00:28 C 02 53 14.80 +32 34 26.5 c 758
1999-01-12 02:06:10 C 02 53 16.96 +32 34 15.6 c 758
1999-01-12 02:24:59 C 02 53 23.88 +32 33 41.1 c 758
1999-01-12 10:37:04 C 02 56 27.94 +32 19 45.8 422
1999-01-12 10:41:38 C 02 56 29.56 +32 19 37.6 422
1999-01-12 10:46:39 C 02 56 31.35 +32 19 28.8 422
1999-01-12 10:49:41 C 02 56 32.46 +32 19 22.8 422
1999-01-14 20:21:03 C 03 18 02.78 +30 28 29.4 z 151
1999-01-14 20:30:41 C 03 18 06.43 +30 28 10.4 z 151
1999-01-14 20:38:22 C 03 18 09.02 +30 27 54.3 z 151
1999-01-14 20:40:47 C 03 18 09.98 +30 27 49.2 z 151
1999-01-14 20:43:05 C 03 18 10.82 +30 27 44.2 z 151
1999-01-15 18:38:19 C 03 26 20.77 +29 42 26.4 z 151
1999-01-15 18:45:26 C 03 26 23.27 +29 42 10.8 z 151
1999-01-15 18:52:11 C 03 26 25.76 +29 41 57.8 z 151