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
2002-01-14 07:56:46 C 08 25 22.97 +10 31 12.9 19.0 c 704
2002-01-14 08:12:34 C 08 25 21.04 +10 31 25.3 c 699
2002-01-14 08:22:14 C 08 25 19.77 +10 31 35.0 18.9 c 704
2002-01-14 08:39:35 C 08 25 17.70 +10 31 48.1 c 699
2002-01-14 08:44:21 C 08 25 17.01 +10 31 54.3 18.9 c 704
2002-01-14 09:07:06 C 08 25 14.16 +10 32 13.6 18.6 c 704
2002-01-22 03:58:45 C 08 05 24.59 +12 56 56.4 c 649
2002-01-22 04:04:28 C 08 05 24.08 +12 57 00.4 c 649
2002-01-22 04:09:58 C 08 05 23.54 +12 57 03.6 c 649
2002-01-22 04:15:27 C 08 05 23.03 +12 57 07.3 c 649
2002-02-03 22:48:46 C 07 43 43.24 +15 45 44.4 c 113
2002-02-03 22:52:28 C 07 43 43.02 +15 45 46.1 c 113
2002-02-03 22:56:11 C 07 43 42.82 +15 45 48.3 c 113
2002-02-03 23:03:38 C 07 43 42.50 +15 45 50.9 c 113
2002-02-03 23:07:21 C 07 43 42.31 +15 45 52.8 c 113
2002-02-06 04:07:07 C 07 41 12.57 +16 07 57.2 c 644
2002-02-06 04:37:23 C 07 41 11.17 +16 08 09.4 c 644
2002-02-06 05:07:34 C 07 41 09.77 +16 08 22.3 c 644
2002-02-09 14:13:02 C 07 37 57.45 +16 38 48.5 c 413
2002-02-09 14:22:18 C 07 37 57.11 +16 38 52.0 c 413
2002-02-11 04:20:24 C 07 36 42.58 +16 51 34.4 20.6 c 704
2002-02-11 04:40:45 C 07 36 41.89 +16 51 41.4 20.7 c 704
2002-02-11 05:01:06 C 07 36 41.35 +16 51 49.7 20.5 c 704
2002-02-11 05:21:27 C 07 36 40.63 +16 51 55.9 19.9 c 704
2002-02-16 02:48:27 C 07 33 45.01 +17 27 00.2 c 644
2002-02-16 03:51:10 C 07 33 43.65 +17 27 16.9 c 644
2002-02-19 12:17:34 C 07 32 27.71 +17 47 44.3 c 413
2002-02-19 12:23:52 C 07 32 27.60 +17 47 46.0 c 413
2002-02-19 12:30:10 C 07 32 27.50 +17 47 47.8 c 413
2002-03-09 05:50:24 C 07 33 38.01 +18 56 34.2 c 696
2002-03-09 05:56:08 C 07 33 38.08 +18 56 35.0 c 696
2005-05-04 12:06:37 C 13 59 15.18 -06 19 32.0 t 568
2005-05-04 12:08:37 C 13 59 15.06 -06 19 30.5 t 568
2005-05-04 12:10:07 C 13 59 14.972 -06 19 29.98 o 568
2005-05-04 12:10:38 C 13 59 14.97 -06 19 30.0 t 568
2007-03-09 09:22:40 C 11 01 54.792 +07 01 57.91 o 568
2014-05-07 11:49:57 C 16 04 04.755 -12 16 06.40 L F51
2014-05-07 12:08:11 C 16 04 03.677 -12 16 00.34 L F51
2014-05-07 12:26:27 C 16 04 02.605 -12 15 54.20 L F51
2014-05-10 08:18:55 C 16 00 00.78 -11 52 48.0 o 691
2014-05-10 08:44:26 C 15 59 59.16 -11 52 39.6 o 691
2014-05-10 09:10:00 C 15 59 57.51 -11 52 30.1 o 691
2014-05-24 08:51:28 C 15 35 16.162 -09 44 13.17 L F51
2014-05-24 09:09:39 C 15 35 14.603 -09 44 05.80 L F51
2014-05-24 10:27:29 C 15 35 07.896 -09 43 34.06 L F51
2014-06-03 09:49:59 C 15 14 07.899 -08 05 34.43 L F51
2014-06-03 10:08:17 C 15 14 06.198 -08 05 27.06 L F51
2014-06-03 10:26:35 C 15 14 04.505 -08 05 19.59 L F51
2014-06-03 10:44:49 C 15 14 02.813 -08 05 12.21 L F51
2014-06-07 23:36:38 C 15 04 13.34 -07 22 13.6 t 204