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
2009-07-31 07:34:12 C 22 35 31.52 +08 23 08.8 r 703
2009-07-31 07:45:21 C 22 35 30.98 +08 23 08.6 r 703
2009-07-31 07:56:19 C 22 35 30.33 +08 23 06.6 r 703
2009-07-31 08:07:31 C 22 35 29.68 +08 23 05.1 r 703
2009-08-01 22:19:56 C 22 33 35.40 +08 18 04.6 o 151
2009-08-01 22:28:17 C 22 33 34.96 +08 18 03.0 o 151
2009-08-01 22:36:38 C 22 33 34.56 +08 18 01.2 o 151
2009-08-02 07:53:04 C 22 33 06.26 +08 16 44.5 18.8 c 704
2009-08-02 08:08:58 C 22 33 05.42 +08 16 42.6 19.4 c 704
2009-08-02 08:24:57 C 22 33 04.57 +08 16 39.9 19.4 c 704
2009-08-02 08:40:56 C 22 33 03.69 +08 16 36.7 19.5 c 704
2009-08-02 08:56:49 C 22 33 02.92 +08 16 34.7 19.5 c 704
2009-08-19 06:15:41 C 22 10 52.92 +06 35 40.0 19.6 c 704
2009-08-19 06:32:00 C 22 10 52.04 +06 35 35.1 19.8 c 704
2009-08-19 06:48:22 C 22 10 51.09 +06 35 29.1 20.0 c 704
2009-08-19 07:21:13 C 22 10 49.21 +06 35 18.5 19.8 c 704
2009-08-26 06:34:36 C 22 01 48.57 +05 34 46.4 r 703
2009-08-26 06:46:05 C 22 01 47.96 +05 34 42.6 r 703
2009-08-26 06:57:29 C 22 01 47.35 +05 34 37.5 r 703
2009-08-26 07:09:01 C 22 01 46.74 +05 34 33.7 r 703
2009-08-31 21:48:23 C 21 55 06.16 +04 41 36.0 o B88
2009-08-31 22:21:01 C 21 55 04.59 +04 41 22.4 o B88
2009-08-31 22:53:40 C 21 55 03.01 +04 41 08.8 o B88
2009-09-20 05:54:52 C 21 38 24.82 +01 38 39.0 r 703
2009-09-20 06:07:04 C 21 38 24.39 +01 38 35.7 r 703
2009-09-20 06:19:03 C 21 38 24.07 +01 38 32.1 r 703
2009-09-20 06:31:21 C 21 38 23.78 +01 38 28.2 r 703
2011-11-26 13:18:18 C 05 47 56.104 +20 44 53.54 L F51
2011-11-26 13:39:44 C 05 47 55.104 +20 44 49.67 L F51
2011-11-26 14:00:29 C 05 47 54.162 +20 44 46.11 L F51
2011-11-26 14:21:03 C 05 47 53.207 +20 44 41.76 L F51
2011-11-29 06:55:06 C 05 44 54.28 +20 33 20.7 o 691
2011-11-29 07:17:18 C 05 44 53.20 +20 33 16.8 o 691
2011-11-30 12:37:50 C 05 43 27.043 +20 27 59.54 L F51
2011-11-30 12:56:09 C 05 43 26.103 +20 27 56.20 L F51
2011-12-06 08:49:23 C 05 36 02.410 +20 01 18.73 L F51
2011-12-06 09:10:41 C 05 36 01.187 +20 01 14.61 L F51
2011-12-16 14:20:17 C 05 21 20.06 +19 09 53.0 r D29
2011-12-16 14:43:21 C 05 21 18.59 +19 09 48.1 r D29
2011-12-16 15:06:24 C 05 21 17.10 +19 09 42.8 r D29
2011-12-18 07:59:27 C 05 18 42.41 +19 00 42.1 20.0 c 704
2011-12-18 08:37:16 C 05 18 39.92 +19 00 32.4 20.3 c 704
2011-12-18 08:55:58 C 05 18 38.80 +19 00 29.1 19.6 c 704
2011-12-18 09:14:49 C 05 18 37.54 +19 00 24.7 19.9 c 704
2011-12-27 04:05:26 C 05 05 20.97 +18 13 07.6 r G96
2011-12-27 04:18:46 C 05 05 20.14 +18 13 04.8 r G96
2011-12-27 04:45:34 C 05 05 18.45 +18 12 58.8 r G96
2012-01-26 22:51:06 C 04 32 20.02 +16 00 26.3 u 561
2012-01-26 22:56:27 C 04 32 20.04 +16 00 24.8 u 561
2012-01-26 23:01:46 C 04 32 19.86 +16 00 25.0 u 561