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
2021-11-06 11:35:14 C 02 56 06.475 +13 17 07.87 U F52
2021-11-08 06:50:03 C 02 53 05.37 +13 08 25.3 V G96
2021-11-08 06:57:32 C 02 53 04.83 +13 08 23.7 V G96
2021-11-08 07:05:02 C 02 53 04.30 +13 08 22.1 V G96
2021-11-08 07:12:30 C 02 53 03.77 +13 08 20.6 V G96
2021-11-08 15:41:51 C 02 52 28.09 +13 06 38.2 V D29
2021-11-08 15:43:07 C 02 52 28.02 +13 06 37.8 V D29
2021-11-08 16:02:13 C 02 52 26.66 +13 06 33.1 V D29
2021-11-08 16:03:29 C 02 52 26.62 +13 06 33.9 V D29
2021-11-08 16:22:35 C 02 52 25.24 +13 06 29.9 V D29
2021-11-08 16:23:51 C 02 52 25.09 +13 06 30.0 V D29
2021-11-11 07:20:53 C 02 48 00.864 +12 53 51.32 U F52
2021-11-11 07:25:40 C 02 48 00.521 +12 53 50.33 U F51
2021-11-11 07:35:39 C 02 47 59.801 +12 53 48.34 U F52
2021-11-11 07:40:33 C 02 47 59.456 +12 53 47.41 U F51
2021-11-11 07:50:21 C 02 47 58.747 +12 53 45.43 U F52
2021-11-11 07:55:28 C 02 47 58.386 +12 53 44.46 U F51
2021-11-11 08:05:03 C 02 47 57.699 +12 53 42.55 U F52
2021-11-12 11:39:39 C 02 46 01.723 +12 48 11.79 U F51
2021-11-12 11:49:28 C 02 46 01.014 +12 48 09.89 U F51
2021-11-12 11:59:02 C 02 46 00.332 +12 48 07.84 U F51
2021-11-13 17:17:57 C 02 43 58.07 +12 42 17.3 V D29
2021-11-13 17:43:24 C 02 43 56.26 +12 42 11.9 V D29
2021-11-13 18:08:52 C 02 43 54.46 +12 42 07.1 V D29
2021-11-14 04:57:36 C 02 43 10.02 +12 39 59.2 V G96
2021-11-14 05:05:41 C 02 43 09.43 +12 39 57.9 V G96
2021-11-14 05:13:46 C 02 43 08.86 +12 39 56.3 V G96
2021-11-14 05:21:51 C 02 43 08.29 +12 39 54.9 V G96
2021-11-23 09:47:06 C 02 28 32.429 +11 59 20.26 U F52
2021-11-23 10:02:45 C 02 28 31.426 +11 59 17.62 U F52
2021-11-23 10:18:19 C 02 28 30.422 +11 59 14.91 U F52
2021-11-23 10:33:54 C 02 28 29.425 +11 59 12.42 U F52
2021-11-27 10:25:59 C 02 22 44.964 +11 44 08.40 U F52
2021-11-27 10:41:32 C 02 22 44.053 +11 44 06.11 U F52
2021-11-27 10:57:05 C 02 22 43.136 +11 44 03.83 U F52
2021-11-27 11:12:39 C 02 22 42.215 +11 44 01.47 U F52
2021-11-29 03:06:09 C 02 20 28.06 +11 38 21.6 V G96
2021-11-29 03:14:12 C 02 20 27.62 +11 38 20.8 V G96
2021-11-29 03:22:16 C 02 20 27.18 +11 38 19.6 V G96
2021-11-29 03:30:19 C 02 20 26.71 +11 38 18.5 V G96
2021-11-30 03:09:49 C 02 19 09.51 +11 35 09.3 V G96
2021-11-30 03:17:52 C 02 19 09.09 +11 35 08.2 V G96
2021-11-30 03:25:53 C 02 19 08.64 +11 35 07.2 V G96
2021-11-30 03:33:56 C 02 19 08.18 +11 35 06.2 V G96
2022-01-21 05:40:00 C 02 05 10.292 +12 54 11.51 U F52
2022-01-21 05:58:27 C 02 05 10.770 +12 54 15.84 U F52
2022-01-21 06:16:54 C 02 05 11.256 +12 54 20.13 U F52
2022-01-21 06:35:25 C 02 05 11.740 +12 54 24.58 U F52
2023-10-11 08:29:53 C 04 02 51.392 +17 32 28.21 V G96
2023-10-11 08:37:16 C 04 02 51.176 +17 32 28.61 V G96