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
1999-02-20 02:55:48 C 04 09 26.53 +33 17 02.0 z 711
1999-02-22 01:56:59 C 04 10 12.14 +33 20 59.5 z 711
1999-02-22 02:13:16 C 04 10 12.36 +33 21 00.9 z 711
1999-03-12 18:44:34 C 04 26 57.90 +34 18 05.9 118
1999-03-12 18:49:45 C 04 26 58.10 +34 18 06.8 118
1999-04-08 10:36:14 C 05 04 48.42 +35 40 17.9 360
1999-04-08 10:42:15 C 05 04 48.66 +35 40 18.3 360
1999-04-08 10:48:14 C 05 04 49.00 +35 40 17.8 360
1999-07-02 16:54:28 C 23 30 59.14 -32 10 16.4 413
1999-07-02 16:56:27 C 23 30 58.80 -32 10 19.3 413
1999-07-06 06:52:42 C 23 16 19.26 -33 54 56.3 c 844
1999-07-06 07:05:36 C 23 16 16.92 -33 55 11.0 c 844
1999-07-06 07:12:13 C 23 16 15.70 -33 55 18.8 c 844
1999-07-08 18:46:29 C 23 06 08.35 -34 58 38.6 360
1999-07-08 18:48:44 C 23 06 07.94 -34 58 40.7 360
1999-07-08 18:50:44 C 23 06 07.57 -34 58 42.6 360
1999-08-01 13:23:32 C 21 38 14.23 -38 50 15.3 z 428
1999-08-01 13:26:05 C 21 38 13.82 -38 50 14.8 z 428
1999-08-01 13:29:08 C 21 38 13.48 -38 50 14.9 z 428
1999-08-01 13:31:43 C 21 38 13.06 -38 50 14.7 z 428
1999-08-09 09:29:11 C 21 17 42.89 -38 14 04.0 c 467
1999-08-09 09:31:24 C 21 17 42.68 -38 14 03.5 c 467
1999-08-09 09:33:36 C 21 17 42.48 -38 14 02.9 c 467
1999-08-09 09:35:51 C 21 17 42.27 -38 14 02.4 c 467
1999-08-09 09:39:10 C 21 17 41.94 -38 14 01.7 c 467
1999-08-14 14:39:14 C 21 07 08.99 -37 33 02.7 360
1999-08-14 14:42:44 C 21 07 08.68 -37 33 01.5 360
1999-08-14 14:46:45 C 21 07 08.40 -37 33 00.1 360
1999-09-18 14:47:41 C 20 48 42.00 -31 03 54.8 413
1999-09-18 14:50:53 C 20 48 42.06 -31 03 53.0 413
2000-11-20 10:36:51 C 07 52 33.77 +25 38 26.6 19.1 c 704
2000-11-20 10:58:09 C 07 52 34.61 +25 38 31.8 19.3 c 704
2000-11-20 11:40:54 C 07 52 36.21 +25 38 41.7 19.5 c 704
2000-11-20 12:02:07 C 07 52 37.22 +25 38 46.3 19.3 c 704
2000-11-29 11:05:45 C 08 00 44.11 +26 37 36.3 z 711
2000-11-29 11:25:01 C 08 00 44.66 +26 37 42.4 z 711
2000-11-29 11:44:27 C 08 00 45.24 +26 37 49.1 z 711
2000-11-30 11:09:16 C 08 01 29.89 +26 45 44.7 18.8 c 704
2000-11-30 11:30:28 C 08 01 30.70 +26 45 52.1 18.6 c 704
2000-11-30 11:53:09 C 08 01 31.18 +26 45 59.4 19.0 c 704
2000-11-30 12:14:49 C 08 01 31.88 +26 46 06.5 18.8 c 704
2000-12-18 09:55:49 C 08 08 45.67 +30 24 28.0 c 699
2000-12-18 10:27:21 C 08 08 45.62 +30 24 50.6 c 699
2000-12-18 12:07:31 C 08 08 45.14 +30 25 59.7 c 699
2000-12-18 12:39:02 C 08 08 44.99 +30 26 21.5 c 699
2000-12-19 08:54:50 C 08 08 43.54 +30 40 54.2 17.8 c 704
2000-12-19 09:16:51 C 08 08 43.36 +30 41 10.4 19.1 c 704
2000-12-19 09:38:53 C 08 08 43.20 +30 41 26.2 18.7 c 704
2000-12-19 10:00:54 C 08 08 43.01 +30 41 41.5 18.6 c 704
2000-12-19 10:23:07 C 08 08 42.81 +30 41 58.2 18.4 c 704