IAA RAS IAA Minor Planet Database

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
2019-01-05 17:14:38 S 06 48 32.436 +11 12 38.30 – V C57
2019-01-05 17:14:38 s 1 -170711.96 5 +94339.680 8240.0 – C57
2019-01-05 17:44:38 S 06 48 30.218 +11 12 27.65 – V C57
2019-01-05 17:44:38 s 1 -169994.42 9 +91867.613 6920.0 – C57
2019-01-05 23:43:52 C 06 48 20.53 +11 07 44.0 – q 160
2019-01-05 23:44:38 S 06 48 04.980 +11 10 22.91 – V C57
2019-01-05 23:44:38 s 1 -159407.50 2 +61236.121 2210.0 – C57
2019-01-05 23:46:49 C 06 48 20.28 +11 07 43.2 – q 160
2019-01-05 23:49:50 C 06 48 20.07 +11 07 42.0 – q 160
2019-01-06 01:14:38 S 06 47 58.558 +11 09 59.15 – V C57
2019-01-06 01:14:38 s 1 -156120.83 7 +53310.008 5250.0 – C57
2019-01-06 05:14:38 S 06 47 41.304 +11 08 40.27 – V C57
2019-01-06 05:14:38 s 1 -145865.68 3 +31707.418 7650.0 – C57
2019-01-06 10:14:38 S 06 47 21.005 +11 06 51.59 – V C57
2019-01-06 10:14:38 s 1 -129405.33 1 + 3987.455 8650.0 – C57
2019-01-06 10:44:38 S 06 47 18.818 +11 06 41.69 – V C57
2019-01-06 10:44:38 s 1 -127497.16 3 + 1192.826 2710.0 – C57
2019-01-07 23:00:29 C 06 44 54.61 +10 54 14.4 – q Z45
2019-01-07 23:11:51 C 06 44 53.77 +10 54 11.3 – q Z45
2019-01-07 23:25:30 C 06 44 52.76 +10 54 07.7 – q Z45
2019-01-08 10:49:30 C 06 44 02.16 +10 50 56.8 – V T05
2019-01-08 10:57:15 C 06 44 01.60 +10 50 54.9 – V T05
2019-01-08 11:17:41 C 06 44 00.01 +10 50 49.2 – V T05
2019-01-08 11:28:43 C 06 43 59.16 +10 50 45.9 – V T05
2019-01-12 10:30:12 C 06 36 53.22 +10 24 40.8 – V T05
2019-01-12 10:30:51 C 06 36 53.17 +10 24 40.6 – V T05
2019-01-12 10:39:15 C 06 36 52.50 +10 24 38.3 – V T05
2019-01-12 10:57:18 C 06 36 51.07 +10 24 33.7 – V T05
2019-01-13 09:48:43 C 06 35 07.72 +10 18 30.3 – V T08
2019-01-13 10:00:30 C 06 35 06.80 +10 18 27.3 – V T08
2019-01-13 10:12:16 C 06 35 05.90 +10 18 24.1 – V T08
2019-01-14 23:08:08 C 06 32 18.42 +10 08 43.7 – q 160
2019-01-14 23:11:04 C 06 32 18.16 +10 08 44.1 – q 160
2019-01-14 23:13:08 C 06 32 17.97 +10 08 41.5 – q 160
2019-01-15 09:41:27 C 06 31 30.66 +10 06 06.6 – V T05
2019-01-15 09:53:14 C 06 31 29.72 +10 06 03.6 – V T05
2019-01-15 10:04:52 C 06 31 28.81 +10 06 00.3 – V T05
2019-01-15 10:16:26 C 06 31 27.92 +10 05 57.5 – V T05
2019-01-23 09:16:27 C 06 17 22.98 +09 21 24.8 – V T05
2019-01-23 09:28:10 C 06 17 22.13 +09 21 22.1 – V T05
2019-01-23 09:39:57 C 06 17 21.26 +09 21 19.9 – V T05
2019-01-23 09:51:48 C 06 17 20.39 +09 21 17.3 – V T05
2019-01-25 09:34:55 C 06 14 00.78 +09 11 34.5 – V T08
2019-01-25 09:46:49 C 06 13 59.94 +09 11 31.7 – V T08
2019-01-25 09:58:28 C 06 13 59.07 +09 11 29.5 – V T08
2019-01-25 10:10:26 C 06 13 58.25 +09 11 27.2 – V T08
2019-01-25 23:15:31 C 06 13 04.73 +09 08 49.0 – q 160
2019-01-25 23:18:29 C 06 13 04.53 +09 08 48.8 – q 160
2019-01-25 23:21:23 C 06 13 04.25 +09 08 49.0 – q 160
2019-01-29 08:53:26 C 06 07 44.00 +08 54 03.2 – V T08