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
2001-02-09 11:00:17 C 05 28 26.35 +57 21 43.3 355
2001-02-09 20:00:21 C 05 25 26.60 +57 31 02.1 16.1 939
2001-02-09 20:07:02 C 05 25 24.12 +57 31 08.7 16.3 939
2001-02-09 20:13:41 C 05 25 21.86 +57 31 15.7 16.3 939
2001-02-10 19:59:55 C 05 17 14.31 +57 54 59.8 952
2001-02-10 20:06:02 C 05 17 12.07 +57 55 05.5 952
2001-02-10 20:08:12 C 05 17 11.26 +57 55 07.7 952
2001-02-10 20:13:00 C 05 17 09.18 +57 54 54.5 049
2001-02-10 20:14:34 C 05 17 08.93 +57 55 13.7 952
2001-02-10 20:16:09 C 05 17 08.04 +57 54 57.4 049
2001-02-10 20:16:40 C 05 17 08.15 +57 55 15.8 952
2001-02-10 20:18:48 C 05 17 07.40 +57 55 17.8 952
2001-02-10 20:19:05 C 05 17 07.00 +57 55 00.1 049
2001-02-10 20:20:55 C 05 17 06.60 +57 55 20.1 952
2001-02-10 21:17:22 C 05 16 45.17 +57 56 02.0 118
2001-02-10 21:19:41 C 05 16 44.35 +57 56 04.2 118
2001-02-11 00:33:12 C 05 15 35.69 +57 59 00.0 16.0 939
2001-02-11 00:39:52 C 05 15 33.17 +57 59 06.1 15.9 939
2001-02-11 00:46:33 C 05 15 30.80 +57 59 09.8 16.3 939
2001-02-11 20:12:41 C 05 08 40.49 +58 17 15.7 118
2001-02-11 20:17:57 C 05 08 38.53 +58 17 20.1 118
2001-02-12 03:54:42 C 05 05 54.39 +58 24 12.5 16.3 c 704
2001-02-12 04:14:21 C 05 05 46.80 +58 24 28.0 17.2 c 704
2001-02-12 04:33:56 C 05 05 39.27 +58 24 43.6 17.1 c 704
2001-02-12 04:53:58 C 05 05 31.70 +58 24 58.4 16.5 c 704
2001-02-12 05:13:49 C 05 05 24.14 +58 25 14.6 16.5 c 704
2001-02-12 21:49:28 C 04 59 20.66 +58 38 42.0 049
2001-02-12 21:56:49 C 04 59 17.89 +58 38 47.4 049
2001-02-12 22:02:16 C 04 59 15.86 +58 38 51.2 049
2001-02-25 18:16:45 C 02 46 25.35 +59 12 18.9 118
2001-02-25 18:22:51 C 02 46 22.38 +59 12 13.5 118
2001-07-21 09:38:08 C 23 53 01.46 -17 57 54.7 18.2 c 644
2001-07-21 09:53:12 C 23 53 00.72 -17 58 04.2 18.1 c 644
2001-07-21 10:08:28 C 23 52 59.97 -17 58 13.8 18.1 c 644
2001-07-22 01:11:55 C 23 52 17.06 -18 07 35.8 c 046
2001-07-22 01:13:54 C 23 52 16.95 -18 07 36.2 c 046
2001-07-22 01:17:17 C 23 52 16.79 -18 07 38.0 c 046
2001-07-22 01:19:04 C 23 52 16.64 -18 07 39.7 c 046
2001-07-22 01:29:19 C 23 52 16.16 -18 07 45.5 d 557
2001-07-22 01:43:20 C 23 52 15.47 -18 07 54.1 d 557
2001-07-22 01:45:52 C 23 52 15.27 -18 07 56.1 d 557
2001-07-22 01:59:23 C 23 52 14.72 -18 08 03.3 i 104
2001-07-22 02:03:52 C 23 52 14.41 -18 08 06.4 i 104
2001-07-22 02:07:33 C 23 52 14.28 -18 08 08.8 i 104
2001-07-22 09:40:18 C 23 51 52.36 -18 12 47.6 18.2 c 644
2001-07-22 09:54:43 C 23 51 51.59 -18 12 56.4 18.3 c 644
2001-07-22 10:10:58 C 23 51 50.74 -18 13 06.7 18.3 c 644
2001-07-22 10:26:06 C 23 51 50.00 -18 13 16.7 18.0 c 644
2001-07-22 10:41:21 C 23 51 49.19 -18 13 26.2 17.9 c 644
2001-07-22 10:56:35 C 23 51 48.36 -18 13 35.9 18.0 c 644