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
2003-08-23 11:21:48 C 23 57 39.96 -15 32 04.0 18.3 c 644
2003-08-23 11:37:07 C 23 57 38.79 -15 32 11.5 18.5 c 644
2003-08-23 11:53:57 C 23 57 37.52 -15 32 19.8 18.3 c 644
2003-08-31 07:41:14 C 23 43 13.04 -16 59 35.0 18.6 c 704
2003-08-31 07:58:11 C 23 43 11.68 -16 59 41.8 18.8 c 704
2003-08-31 08:15:18 C 23 43 10.30 -16 59 49.7 18.6 c 704
2003-08-31 08:32:09 C 23 43 08.87 -16 59 55.7 18.3 c 704
2003-08-31 08:49:53 C 23 43 07.48 -17 00 03.9 18.8 c 704
2004-12-15 10:51:35 C 12 08 31.13 +08 34 31.9 19.0 c 704
2004-12-15 11:10:14 C 12 08 34.81 +08 34 14.1 18.8 c 704
2004-12-15 11:28:36 C 12 08 38.42 +08 33 54.9 19.8 c 704
2004-12-15 11:48:59 C 12 08 42.36 +08 33 33.6 19.5 c 704
2004-12-15 12:07:26 C 12 08 46.07 +08 33 16.5 19.8 c 704
2004-12-16 11:49:50 C 12 13 31.16 +08 09 13.8 d 703
2004-12-16 11:59:56 C 12 13 33.20 +08 09 03.4 d 703
2004-12-16 12:10:03 C 12 13 35.23 +08 08 54.0 d 703
2004-12-16 12:20:09 C 12 13 37.21 +08 08 42.5 d 703
2005-01-07 11:27:12 C 14 12 53.03 -02 33 12.7 19.1 c 704
2005-01-07 11:45:51 C 14 12 57.62 -02 33 37.1 19.4 c 704
2005-01-07 12:04:30 C 14 13 02.26 -02 34 01.8 19.4 c 704
2005-01-07 12:23:09 C 14 13 06.72 -02 34 26.9 19.5 c 704
2005-01-07 12:41:49 C 14 13 11.27 -02 34 52.5 18.5 c 704
2005-09-13 07:08:16 C 00 07 27.94 -12 13 53.0 r 703
2005-09-13 07:21:31 C 00 07 26.94 -12 13 58.6 r 703
2005-09-13 07:34:49 C 00 07 25.93 -12 14 03.9 r 703
2005-09-13 07:48:08 C 00 07 24.88 -12 14 08.9 r 703
2005-09-24 06:33:46 C 23 48 43.53 -13 35 49.6 o 644
2005-09-24 07:04:00 C 23 48 41.40 -13 35 57.7 o 644
2005-09-24 07:34:39 C 23 48 39.25 -13 36 04.6 o 644
2005-09-26 07:51:21 C 23 45 25.70 -13 47 08.5 r 703
2005-09-26 07:59:20 C 23 45 25.05 -13 47 10.5 r 703
2005-09-26 08:07:22 C 23 45 24.58 -13 47 11.3 r 703
2006-10-22 11:49:59 C 09 41 13.30 +17 58 20.9 c 691
2006-10-22 12:07:57 C 09 41 15.82 +17 58 11.5 c 691
2006-10-22 12:25:55 C 09 41 18.27 +17 58 01.3 c 691
2006-11-11 11:55:23 C 10 52 55.57 +12 39 28.9 c 691
2006-11-11 12:13:18 C 10 52 58.41 +12 39 14.1 c 691
2007-10-20 05:48:08 C 23 52 35.54 -10 19 54.9 r G96
2007-10-20 05:58:26 C 23 52 35.04 -10 19 55.6 r G96
2007-10-20 06:08:53 C 23 52 34.57 -10 19 56.1 r G96
2007-10-20 06:19:21 C 23 52 34.14 -10 19 56.9 r G96
2009-09-27 08:57:54 C 00 58 04.08 -04 01 10.2 r G96
2009-09-27 09:08:40 C 00 58 03.36 -04 01 14.0 r G96
2009-09-27 09:19:16 C 00 58 02.64 -04 01 17.4 r G96
2009-09-27 09:29:50 C 00 58 01.92 -04 01 21.3 r G96
2011-09-23 11:06:13 C 01 35 20.431 +00 46 42.58 L F51
2011-09-23 11:28:20 C 01 35 19.137 +00 46 35.21 L F51
2011-09-23 11:50:34 C 01 35 17.849 +00 46 27.99 L F51
2011-09-23 12:13:03 C 01 35 16.538 +00 46 20.39 L F51
2011-10-19 08:12:10 C 00 56 32.520 -02 22 15.07 L F51