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
2011-10-19 08:30:04 C 00 56 31.433 -02 22 19.38 L F51
2011-10-19 08:48:31 C 00 56 30.264 -02 22 23.34 L F51
2011-10-19 09:05:20 C 00 56 29.217 -02 22 27.18 L F51
2011-10-25 07:52:23 C 00 48 14.186 -02 52 01.78 L F51
2011-10-25 08:10:03 C 00 48 13.195 -02 52 04.93 L F51
2013-10-22 09:09:57 C 01 20 37.229 +01 00 37.99 L F51
2013-10-22 09:26:45 C 01 20 36.160 +01 00 34.08 L F51
2013-10-22 09:46:15 C 01 20 34.915 +01 00 29.15 L F51
2013-10-27 07:58:08 C 01 13 26.036 +00 33 08.26 L F51
2013-10-27 08:20:25 C 01 13 24.690 +00 33 03.37 L F51
2013-10-27 08:42:50 C 01 13 23.333 +00 32 58.58 L F51
2013-10-27 09:05:20 C 01 13 21.975 +00 32 53.80 L F51
2015-10-12 10:14:26 C 02 05 23.103 +05 44 25.21 L F51
2015-10-12 10:32:06 C 02 05 21.985 +05 44 20.33 L F51
2015-10-12 11:07:30 C 02 05 19.735 +05 44 10.30 L F51
2015-10-14 18:10:09 C 02 01 54.09 +05 28 43.3 q D29
2015-10-14 18:50:47 C 02 01 51.45 +05 28 31.0 q D29
2015-10-15 12:18:43 C 02 00 45.459 +05 23 38.93 L F51
2015-10-15 12:35:34 C 02 00 44.368 +05 23 34.20 L F51
2015-10-15 12:52:18 C 02 00 43.289 +05 23 29.43 L F51
2015-10-15 13:09:02 C 02 00 42.202 +05 23 24.80 L F51
2015-10-18 09:50:23 C 01 56 19.550 +05 04 15.62 L F51
2015-10-18 10:06:29 C 01 56 18.478 +05 04 11.01 L F51
2015-10-18 10:22:35 C 01 56 17.421 +05 04 06.64 L F51
2015-10-18 10:38:46 C 01 56 16.348 +05 04 02.26 L F51
2015-10-19 09:10:07 C 01 54 49.517 +04 57 48.87 L F51
2015-10-19 09:26:33 C 01 54 48.440 +04 57 44.34 L F51
2015-10-19 09:43:00 C 01 54 47.344 +04 57 39.79 L F51
2015-10-19 09:59:34 C 01 54 46.245 +04 57 35.35 L F51
2015-11-02 10:02:10 C 01 33 32.903 +03 33 53.47 L F51
2015-11-02 10:19:10 C 01 33 31.858 +03 33 49.68 L F51
2015-11-02 10:36:07 C 01 33 30.789 +03 33 46.18 L F51
2015-11-02 10:53:09 C 01 33 29.778 +03 33 42.33 L F51
2015-11-03 07:47:47 C 01 32 15.883 +03 29 20.83 L F51
2015-11-03 08:06:38 C 01 32 14.741 +03 29 16.85 L F51
2015-11-03 08:25:32 C 01 32 13.600 +03 29 12.89 L F51
2015-11-03 08:44:31 C 01 32 12.444 +03 29 08.98 L F51
2015-12-07 06:09:26 C 01 02 23.092 +02 38 18.32 L F51
2015-12-07 06:26:31 C 01 02 22.876 +02 38 19.81 L F51
2015-12-07 06:43:44 C 01 02 22.659 +02 38 21.11 L F51
2017-09-23 10:31:14 C 02 53 34.284 +10 33 02.40 L F51
2017-09-23 10:46:58 C 02 53 33.787 +10 33 00.04 L F51
2017-09-23 11:02:50 C 02 53 33.275 +10 32 57.62 L F51
2017-09-23 11:18:40 C 02 53 32.753 +10 32 55.22 L F51
2017-09-26 08:02:30 C 02 51 17.10 +10 21 48.9 q G96
2017-09-26 08:10:00 C 02 51 16.86 +10 21 47.1 q G96
2017-09-26 08:17:31 C 02 51 16.58 +10 21 44.9 q G96
2017-09-26 08:25:02 C 02 51 16.46 +10 21 44.6 q G96
2017-10-15 08:08:22 C 02 29 06.07 +08 44 24.4 U G96
2017-10-15 08:15:55 C 02 29 05.57 +08 44 22.2 U G96