439437 (2013 NK4)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5499303995 ± 1.89e-08
Semi-major axis (a)1.0227061563 AU ± 1.14e-09
Inclination (i)6.54740011° ± 1.35e-06
Long. of Asc. Node (Ω)33.69525755° ± 1.82e-06
Arg. of Perihelion (ω)50.59070783° ± 2.15e-06
Mean Anomaly (M)254.19610193° ± 2.14e-06
Mean Motion (n)0.9529847936°/day ± 1.59e-09
Perihelion dist (q)0.46028895 AU ± 1.93e-08
Aphelion dist (Q)1.58512336 AU ± 1.94e-08
Orbital Period1.03425185 yr ± 1.73e-09
Physical Parameters
H (abs. magnitude)18.94
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.211″
Uncertainty0
Orbit TypeApollo
MOID0.015060 AU
Observations Used557
Radar Obs Used5
Oppositions1
Arc Total2013-2025
First Observation Used2013-07-01
Last Observation Used2025-05-29
Observations (627)
Date Type RA Dec Mag Band Observatory
2024-05-07 22:33:16 C 12 45 28.301 -10 20 32.35 Z C23
2024-05-07 22:37:36 C 12 45 28.224 -10 20 33.68 Z C23
2024-05-07 22:41:55 C 12 45 28.078 -10 20 34.66 Z C23
2024-05-08 06:05:27 C 12 45 18.868 -10 22 27.59 V G96
2024-05-08 06:12:53 C 12 45 18.652 -10 22 29.46 V G96
2024-05-08 06:20:23 C 12 45 18.432 -10 22 31.48 V G96
2024-05-08 06:27:52 C 12 45 18.212 -10 22 33.31 V G96
2024-05-09 02:52:24 C 12 44 56.630 -10 27 19.15 V W68
2024-05-09 03:06:54 C 12 44 56.263 -10 27 22.64 V W68
2024-05-09 03:11:29 C 12 44 56.177 -10 27 23.69 V W68
2024-05-09 03:20:38 C 12 44 55.927 -10 27 26.28 V W68
2024-05-09 21:41:18 C 12 44 40.207 -10 32 51.54 Z C23
2024-05-09 21:43:45 C 12 44 40.306 -10 32 53.63 Z C23
2024-05-13 02:36:15 B 12 44 07.05 -10 51 03.9 q W51
2024-05-13 02:46:15 B 12 44 06.99 -10 51 06.7 q W51
2024-05-13 03:55:57 B 12 44 06.36 -10 51 20.8 q W51
2024-05-13 04:24:04 B 12 44 06.10 -10 51 28.0 q W51
2024-05-14 22:23:46 C 12 44 07.843 -11 00 13.07 V M22
2024-05-14 22:29:04 C 12 44 07.870 -11 00 14.26 V M22
2024-05-14 22:37:45 C 12 44 07.826 -11 00 15.84 V M22
2024-05-14 23:27:59 C 12 44 07.723 -11 00 25.99 V M22
2024-05-17 01:54:05 C 12 44 26.659 -11 11 21.80 V W68
2024-05-17 01:58:38 C 12 44 26.714 -11 11 22.38 V W68
2024-05-17 02:06:37 C 12 44 26.729 -11 11 23.46 V W68
2024-05-17 02:47:46 C 12 44 26.774 -11 11 32.28 V W68
2024-05-28 03:37:18 C 12 49 18.610 -12 06 50.18 V W68
2024-05-28 03:41:19 C 12 49 18.727 -12 06 50.58 V W68
2024-05-28 03:49:17 C 12 49 18.917 -12 06 51.84 V W68
2024-05-28 04:03:50 C 12 49 19.217 -12 06 55.48 V W68
2024-06-01 02:26:44 C 12 52 03.878 -12 27 04.43 V W68
2024-06-01 02:31:22 C 12 52 04.075 -12 27 06.05 V W68
2024-06-01 02:45:14 C 12 52 04.370 -12 27 08.39 V W68
2024-06-01 03:03:19 C 12 52 04.913 -12 27 12.10 V W68
2024-06-05 06:18:53 C 12 55 24.908 -12 49 19.77 X F52
2024-06-05 06:36:50 C 12 55 25.464 -12 49 23.91 X F52
2024-06-05 06:54:46 C 12 55 26.021 -12 49 27.87 X F52
2024-06-05 07:12:45 C 12 55 26.576 -12 49 31.81 X F52
2024-06-08 04:47:09 C 12 58 01.002 -13 05 25.62 V G96
2024-06-08 04:55:22 C 12 58 01.261 -13 05 27.53 V G96
2024-06-08 05:03:35 C 12 58 01.556 -13 05 29.11 V G96
2024-06-08 05:11:48 C 12 58 01.859 -13 05 31.02 V G96
2025-04-25 03:43:42 C 07 37 01.852 +27 20 29.08 V 703
2025-04-25 03:47:00 C 07 37 04.040 +27 20 19.97 V 703
2025-04-25 03:50:18 C 07 37 06.323 +27 20 10.10 V 703
2025-04-25 03:53:37 C 07 37 08.591 +27 20 00.74 V 703
2025-04-25 06:23:48 C 07 38 53.321 +27 13 10.31 V T05
2025-04-25 06:28:23 C 07 38 56.446 +27 12 57.46 V T05
2025-04-25 06:36:27 C 07 39 01.951 +27 12 34.52 V T05
2025-04-25 06:53:42 C 07 39 13.728 +27 11 45.49 V T05
2025-04-26 03:57:58 C 07 53 36.128 +26 09 53.46 V 703
Radar Observations (5)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2024-04-13 10:50:00 666335.812 0.1 Hz 8560 -14 -14
2024-04-13 11:00:00 29850789.846 10 us 8560 -14 -14
2024-04-13 11:20:00 29757790.978 2 us 8560 -14 -14
2024-04-17 06:00:00 26676670.259 2 us 8560 -14 -14
2024-04-19 04:50:00 40426934.09 0.5 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)