399433 (2001 YK4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7766512705 ± 3.50e-08
Semi-major axis (a)2.6547629684 AU ± 3.90e-08
Inclination (i)4.37697530° ± 6.78e-06
Long. of Asc. Node (Ω)155.68713128° ± 1.42e-04
Arg. of Perihelion (ω)210.85778001° ± 1.46e-04
Mean Anomaly (M)204.04258738° ± 2.05e-05
Mean Motion (n)0.2278629154°/day ± 5.02e-09
Perihelion dist (q)0.59293794 AU ± 9.33e-08
Aphelion dist (Q)4.71658800 AU ± 1.16e-07
Orbital Period4.32552301 yr ± 9.54e-08
Physical Parameters
H (abs. magnitude)18.58
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.397″
Uncertainty0
Orbit TypeApollo
MOID0.064607 AU
Observations Used139
Oppositions11
Arc Total2001-2015
First Observation Used2001-12-23
Last Observation Used2015-03-17
Observations (166)
Date Type RA Dec Mag Band Observatory
2001-12-23 08:49:30 C 09 45 16.41 +00 45 18.9 c 699
2001-12-23 09:24:23 C 09 45 10.15 +00 46 04.0 c 699
2001-12-23 09:59:17 C 09 45 03.83 +00 46 49.2 c 699
2001-12-23 10:34:16 C 09 44 57.55 +00 47 34.3 c 699
2001-12-24 00:59:04 C 09 42 27.23 +01 06 05.5 c 046
2001-12-24 01:00:12 C 09 42 26.91 +01 06 06.2 c 046
2001-12-24 01:03:59 C 09 42 26.19 +01 06 11.1 c 046
2001-12-24 01:05:11 C 09 42 26.00 +01 06 12.7 c 046
2001-12-24 02:53:17 C 09 42 06.72 +01 08 32.2 c 118
2001-12-24 02:54:42 C 09 42 06.49 +01 08 33.5 c 118
2001-12-24 02:57:29 C 09 42 06.01 +01 08 37.9 c 118
2001-12-24 02:59:04 C 09 42 05.72 +01 08 39.3 c 118
2001-12-24 10:28:54 C 09 40 47.75 +01 18 18.1 j 918
2001-12-24 10:31:24 C 09 40 47.31 +01 18 22.1 j 918
2001-12-24 10:35:56 C 09 40 46.37 +01 18 29.5 c 649
2001-12-24 10:36:44 C 09 40 46.43 +01 18 28.1 j 918
2001-12-24 10:38:15 C 09 40 45.92 +01 18 32.7 c 649
2001-12-24 10:42:56 C 09 40 45.09 +01 18 38.8 c 649
2001-12-25 11:59:16 C 09 36 24.49 +01 51 01.2 19.4 c 608
2001-12-25 12:13:55 C 09 36 21.88 +01 51 20.3 19.3 c 608
2001-12-25 12:29:12 C 09 36 19.18 +01 51 39.4 19.5 c 608
2001-12-26 05:20:34 C 09 33 25.27 +02 12 50.5 c 966
2001-12-26 05:28:47 C 09 33 23.85 +02 13 00.8 c 966
2001-12-26 05:37:58 C 09 33 22.25 +02 13 12.8 c 966
2002-01-03 07:06:38 C 09 01 54.01 +06 05 28.9 c 649
2002-01-03 07:09:33 C 09 01 53.53 +06 05 32.2 c 649
2002-01-03 07:12:27 C 09 01 53.05 +06 05 35.6 c 649
2002-01-03 07:18:15 C 09 01 52.17 +06 05 41.7 c 649
2002-01-03 14:49:01 C 09 00 43.10 +06 14 31.3 c 413
2002-01-03 14:50:59 C 09 00 42.76 +06 14 33.6 c 413
2002-01-03 14:53:00 C 09 00 42.48 +06 14 36.0 c 413
2002-01-07 08:09:35 C 08 47 30.31 +07 50 48.5 c 608
2002-01-07 08:24:13 C 08 47 28.17 +07 51 03.7 c 608
2002-01-07 08:40:54 C 08 47 25.74 +07 51 20.7 c 608
2002-01-08 11:24:37 C 08 43 38.14 +08 18 43.7 18.6 c 644
2002-01-08 11:40:21 C 08 43 35.87 +08 18 59.5 18.5 c 644
2002-01-08 11:56:09 C 08 43 33.62 +08 19 15.5 18.8 c 644
2002-01-09 06:45:31 C 08 40 58.94 +08 38 08.9 c 644
2002-01-09 10:17:08 C 08 40 29.107 +08 41 38.62 W 644
2002-01-09 10:32:01 C 08 40 27.002 +08 41 53.95 W 644
2002-01-09 10:48:50 C 08 40 24.667 +08 42 10.04 W 644
2002-01-12 08:07:18 C 08 31 18.24 +09 48 25.1 c 608
2002-01-12 08:22:10 C 08 31 16.33 +09 48 39.6 c 608
2002-01-12 08:37:14 C 08 31 14.40 +09 48 53.4 c 608
2002-01-13 07:15:25 C 08 28 23.62 +10 09 24.6 c 711
2002-01-13 07:24:33 C 08 28 22.39 +10 09 32.7 c 711
2002-01-13 07:33:38 C 08 28 21.22 +10 09 40.4 c 711
2002-01-14 07:18:04 C 08 25 27.77 +10 30 37.1 c 699
2002-01-14 07:34:12 C 08 25 25.72 +10 30 53.1 18.8 c 704
2002-01-14 07:45:19 C 08 25 24.40 +10 31 01.8 c 699