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
2023-10-11 08:44:38 C 04 02 50.960 +17 32 27.92 V G96
2023-10-11 08:52:02 C 04 02 50.744 +17 32 28.18 V G96
2023-10-11 11:30:34 C 04 02 46.450 +17 32 22.73 X F52
2023-10-11 11:48:02 C 04 02 45.941 +17 32 22.03 X F52
2023-10-11 12:05:40 C 04 02 45.435 +17 32 21.28 X F52
2023-10-11 12:23:13 C 04 02 44.904 +17 32 20.79 X F52
2023-10-15 10:04:15 C 03 59 50.142 +17 27 51.29 X F51
2023-10-15 10:23:28 C 03 59 49.444 +17 27 50.28 X F51
2023-10-15 10:43:43 C 03 59 48.711 +17 27 49.31 X F51
2023-10-15 11:02:52 C 03 59 48.015 +17 27 48.28 X F51
2023-10-16 11:04:27 C 03 58 56.689 +17 26 25.44 X F51
2023-10-16 11:22:13 C 03 58 56.020 +17 26 24.36 X F51
2023-10-16 11:40:00 C 03 58 55.329 +17 26 23.35 X F51
2023-10-16 11:57:51 C 03 58 54.645 +17 26 22.38 X F51
2023-10-24 08:22:56 C 03 50 43.680 +17 12 10.10 X F51
2023-10-24 09:00:30 C 03 50 41.742 +17 12 06.74 X F51
2023-10-24 09:19:46 C 03 50 40.753 +17 12 04.76 X F51
2023-11-04 09:39:46 C 03 35 11.429 +16 41 58.02 V G96
2023-11-04 09:47:08 C 03 35 10.918 +16 41 56.40 V G96
2023-11-04 09:54:30 C 03 35 10.453 +16 41 55.75 V G96
2023-11-04 10:01:52 C 03 35 09.935 +16 41 54.74 V G96
2023-11-06 18:22:13 C 03 31 23.333 +16 34 00.90 W M01
2023-11-06 21:38:05 C 03 31 09.425 +16 33 33.89 W M01
2023-11-07 01:20:11 C 03 30 53.829 +16 33 00.29 W M01
2023-11-12 11:30:06 C 03 21 40.400 +16 13 06.16 X F51
2023-11-12 11:47:40 C 03 21 39.090 +16 13 03.27 X F51
2023-11-12 12:04:07 C 03 21 37.889 +16 13 00.65 X F51
2023-11-13 21:01:58 C 03 19 13.54 +16 07 37.5 V O18
2023-11-13 21:13:26 C 03 19 12.68 +16 07 35.5 V O18
2023-11-13 21:24:53 C 03 19 11.83 +16 07 33.6 V O18
2023-12-04 06:50:33 C 02 44 53.315 +14 48 37.22 V G96
2023-12-04 06:58:42 C 02 44 52.804 +14 48 36.00 V G96
2023-12-04 07:06:49 C 02 44 52.292 +14 48 35.32 V G96
2023-12-04 07:14:56 C 02 44 51.781 +14 48 33.73 V G96
2023-12-09 05:36:11 C 02 38 04.224 +14 33 47.82 X F52
2023-12-09 05:48:22 C 02 38 03.543 +14 33 46.53 X F52
2023-12-09 06:00:29 C 02 38 02.862 +14 33 45.33 X F52
2023-12-17 05:13:37 C 02 29 07.004 +14 17 19.21 V G96
2023-12-17 05:21:48 C 02 29 06.666 +14 17 18.89 V G96
2023-12-17 05:29:59 C 02 29 06.335 +14 17 18.20 V G96
2023-12-17 05:38:10 C 02 29 06.004 +14 17 17.48 V G96
2024-02-28 05:48:48 C 03 02 49.933 +19 26 47.44 X F51
2024-02-28 05:54:23 C 03 02 50.283 +19 26 49.08 X F51
2024-02-28 05:59:58 C 03 02 50.652 +19 26 51.26 X F51
2024-02-28 06:05:32 C 03 02 51.008 +19 26 52.64 X F51
2025-09-30 12:30:02 C 04 35 30.154 +19 35 49.72 X F52
2025-09-30 12:47:29 C 04 35 30.202 +19 35 50.63 X F52
2025-09-30 13:22:51 C 04 35 30.233 +19 35 52.34 X F52
2025-10-19 10:52:34 C 04 30 03.640 +19 47 43.79 X F52
2025-10-19 11:08:58 C 04 30 03.133 +19 47 43.84 X F52