20429 (1998 YN1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4640786739 ± 1.59e-08
Semi-major axis (a)1.5559503243 AU ± 1.87e-09
Inclination (i)6.30191602° ± 2.25e-06
Long. of Asc. Node (Ω)61.72842223° ± 2.13e-05
Arg. of Perihelion (ω)147.70296024° ± 2.17e-05
Mean Anomaly (M)245.55338327° ± 1.12e-05
Mean Motion (n)0.5078303879°/day ± 9.16e-10
Perihelion dist (q)0.83386696 AU ± 2.48e-08
Aphelion dist (Q)2.27803369 AU ± 2.49e-08
Orbital Period1.94085724 yr ± 3.50e-09
Physical Parameters
H (abs. magnitude)17.76
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.339″
Uncertainty0
Orbit TypeApollo
MOID0.056985 AU
Observations Used706
Oppositions14
Arc Total1998-2026
First Observation Used1998-12-16
Last Observation Used2026-01-12
Observations (745)
Date Type RA Dec Mag Band Observatory
2025-11-25 15:39:02 C 03 36 25.50 +18 54 15.6 V D29
2025-11-27 15:36:59 C 03 32 38.74 +18 48 08.6 V D29
2025-11-27 15:38:15 C 03 32 38.65 +18 48 08.5 V D29
2025-11-27 15:57:21 C 03 32 37.09 +18 48 06.1 V D29
2025-11-27 15:58:37 C 03 32 37.02 +18 48 06.0 V D29
2025-11-27 16:17:42 C 03 32 35.47 +18 48 03.2 V D29
2025-11-27 16:18:59 C 03 32 35.39 +18 48 03.3 V D29
2025-11-29 07:47:42 C 03 29 30.360 +18 42 55.88 X F52
2025-11-29 08:02:40 C 03 29 29.158 +18 42 53.89 X F52
2025-11-29 08:17:39 C 03 29 27.956 +18 42 52.10 X F52
2025-11-30 03:40:12 C 03 27 57.805 +18 40 17.44 V G96
2025-11-30 03:48:14 C 03 27 57.161 +18 40 15.96 V G96
2025-11-30 03:56:15 C 03 27 56.509 +18 40 14.81 V G96
2025-11-30 04:04:17 C 03 27 55.861 +18 40 13.73 V G96
2025-12-10 07:42:15 C 03 10 08.296 +18 08 29.26 V G96
2025-12-10 07:50:18 C 03 10 07.806 +18 08 28.07 V G96
2025-12-10 07:58:21 C 03 10 07.180 +18 08 27.46 V G96
2025-12-10 08:06:24 C 03 10 06.647 +18 08 26.16 V G96
2025-12-13 13:31:41 C 03 05 07.24 +17 59 20.5 V D29
2025-12-13 13:52:03 C 03 05 05.94 +17 59 19.1 V D29
2025-12-16 13:47:47 C 03 00 49.86 +17 51 42.6 V D29
2025-12-16 14:08:09 C 03 00 48.60 +17 51 40.6 V D29
2025-12-16 14:28:31 C 03 00 47.42 +17 51 38.4 V D29
2025-12-17 12:30:35 C 02 59 33.92 +17 49 30.8 V D29
2025-12-17 12:50:56 C 02 59 32.77 +17 49 28.8 V D29
2025-12-17 13:11:18 C 02 59 31.60 +17 49 27.3 V D29
2025-12-19 14:25:03 C 02 56 55.11 +17 45 04.9 V D29
2025-12-19 14:45:24 C 02 56 54.03 +17 45 03.0 V D29
2025-12-19 15:05:44 C 02 56 52.97 +17 45 01.4 V D29
2025-12-25 12:23:39 C 02 50 32.01 +17 35 48.5 V D29
2025-12-25 12:44:01 C 02 50 31.19 +17 35 47.6 V D29
2025-12-25 13:04:22 C 02 50 30.35 +17 35 47.0 V D29
2026-01-08 12:56:43 C 02 42 19.78 +17 37 05.8 V D29
2026-01-08 13:17:04 C 02 42 19.54 +17 37 06.9 V D29
2026-01-08 13:37:26 C 02 42 19.31 +17 37 08.1 V D29
2026-01-10 11:42:06 C 02 41 56.95 +17 40 00.9 V D29
2026-01-10 12:02:28 C 02 41 56.79 +17 40 02.3 V D29
2026-01-10 12:22:50 C 02 41 56.61 +17 40 03.9 V D29
2026-01-11 06:37:13 C 02 41 50.609 +17 41 24.78 X F52
2026-01-11 06:55:04 C 02 41 50.496 +17 41 26.06 X F52
2026-01-11 07:12:59 C 02 41 50.378 +17 41 27.41 X F52
2026-01-11 07:30:58 C 02 41 50.257 +17 41 28.71 X F52
2026-01-12 11:45:00 C 02 41 44.39 +17 43 43.3 V D29
2026-01-12 12:05:22 C 02 41 44.28 +17 43 44.5 V D29
2026-01-12 12:25:44 C 02 41 44.23 +17 43 46.1 V D29