163051 (2001 YJ4)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5665198360 ± 1.31e-08
Semi-major axis (a)2.2754742291 AU ± 1.51e-09
Inclination (i)9.28086117° ± 2.33e-06
Long. of Asc. Node (Ω)247.76892648° ± 1.39e-05
Arg. of Perihelion (ω)322.38895330° ± 1.41e-05
Mean Anomaly (M)323.56866412° ± 1.83e-06
Mean Motion (n)0.2871470734°/day ± 2.85e-10
Perihelion dist (q)0.98637294 AU ± 2.98e-08
Aphelion dist (Q)3.56457552 AU ± 2.99e-08
Orbital Period3.43247894 yr ± 3.41e-09
Physical Parameters
H (abs. magnitude)16.33
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.343″
Uncertainty0
Orbit TypeApollo
MOID0.032094 AU
Observations Used1129
Oppositions34
Arc Total1978-2026
First Observation Used1978-02-05
Last Observation Used2026-01-11
Observations (1362)
Date Type RA Dec Mag Band Observatory
2004-12-13 21:18:29 C 04 21 20.51 +20 22 52.3 c 599
2004-12-13 21:32:55 C 04 21 19.68 +20 22 48.7 c 599
2004-12-13 21:47:17 C 04 21 18.88 +20 22 45.3 c 599
2005-01-11 04:03:25 C 03 52 34.01 +17 59 09.5 c 711
2005-01-11 04:21:58 C 03 52 33.59 +17 59 05.5 c 711
2005-01-11 04:40:33 C 03 52 33.09 +17 59 02.6 c 711
2006-08-05 08:03:08 C 00 44 23.05 +16 29 17.1 21.7 c H55
2006-08-05 08:14:42 C 00 44 22.91 +16 29 18.1 21.7 c H55
2006-08-05 08:26:08 C 00 44 22.81 +16 29 18.5 21.8 c H55
2007-09-15 07:51:28 C 03 33 08.18 +24 14 53.8 o H55
2007-09-15 08:17:07 C 03 33 08.11 +24 14 53.8 o H55
2007-09-15 08:42:45 C 03 33 07.99 +24 14 53.4 o H55
2007-10-09 09:14:13 C 03 23 44.91 +23 47 17.5 o 691
2007-10-09 09:39:42 C 03 23 44.29 +23 47 15.8 o 691
2007-10-09 10:05:09 C 03 23 43.49 +23 47 13.4 o 691
2007-10-16 08:31:06 C 03 18 35.31 +23 27 23.1 r G96
2007-10-16 08:45:44 C 03 18 34.77 +23 27 21.7 r G96
2007-10-16 09:00:32 C 03 18 34.23 +23 27 19.6 r G96
2007-10-16 09:15:22 C 03 18 33.76 +23 27 17.4 r G96
2007-10-21 09:02:53 C 03 14 16.95 +23 09 21.1 o 691
2007-10-21 09:28:17 C 03 14 16.14 +23 09 19.2 o 691
2007-10-21 09:53:41 C 03 14 15.23 +23 09 17.2 o 691
2007-11-02 04:28:18 C 03 02 43.76 +22 15 34.0 o 691
2007-11-02 04:53:43 C 03 02 42.64 +22 15 28.7 o 691
2007-11-02 05:19:09 C 03 02 41.55 +22 15 22.7 o 691
2007-11-06 03:32:38 C 02 58 33.47 +21 54 11.9 o 691
2007-11-06 04:03:07 C 02 58 32.07 +21 54 05.3 o 691
2007-11-06 04:28:37 C 02 58 30.93 +21 53 59.2 o 691
2007-11-19 01:45:34 C 02 44 50.89 +20 36 31.8 o 691
2007-11-19 02:10:59 C 02 44 49.80 +20 36 26.7 o 691
2007-11-19 02:36:24 C 02 44 48.70 +20 36 19.2 o 691
2008-11-06 12:07:13 C 10 33 13.74 +01 36 21.5 o 291
2008-11-06 12:14:57 C 10 33 14.68 +01 36 14.3 o 291
2008-11-06 12:22:49 C 10 33 15.62 +01 36 07.1 o 291
2009-05-30 10:35:06 C 22 44 46.42 +02 05 02.2 r 703
2009-05-30 10:40:09 C 22 44 46.57 +02 05 05.8 r 703
2009-05-30 10:45:26 C 22 44 46.86 +02 05 08.9 r 703
2009-05-30 10:50:37 C 22 44 47.04 +02 05 11.7 r 703
2009-06-21 09:09:33 C 22 57 08.16 +06 06 39.9 19.2 c 704
2009-06-21 09:24:04 C 22 57 08.14 +06 06 44.4 20.0 c 704
2009-06-21 09:39:02 C 22 57 08.36 +06 06 51.1 19.4 c 704
2009-06-21 09:53:02 C 22 57 08.40 +06 06 56.0 19.8 c 704
2009-06-21 10:06:58 C 22 57 08.55 +06 07 02.4 19.6 c 704
2009-07-20 22:30:08 C 22 46 24.41 +08 34 44.5 o 198
2009-07-20 22:46:50 C 22 46 23.76 +08 34 44.9 o 198
2009-07-20 23:03:32 C 22 46 23.10 +08 34 45.3 o 198
2009-07-21 00:46:44 C 22 46 19.11 +08 34 48.3 r 130
2009-07-21 00:50:30 C 22 46 18.95 +08 34 47.5 r 130
2009-07-21 00:55:08 C 22 46 18.81 +08 34 48.4 r 130
2009-07-21 00:59:11 C 22 46 18.67 +08 34 48.8 r 130