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
2023-04-04 03:19:30 C 19 10 08.400 -19 09 19.87 V M22
2023-04-04 03:28:07 C 19 10 06.262 -19 09 29.09 V M22
2023-04-04 03:38:05 C 19 10 03.998 -19 09 42.73 V M22
2023-04-15 06:29:42 C 17 59 49.354 -24 17 08.88 V W68
2023-04-15 06:33:46 C 17 59 48.077 -24 17 14.06 V W68
2023-04-15 06:41:21 C 17 59 45.732 -24 17 20.76 V W68
2023-04-15 06:55:25 C 17 59 41.453 -24 17 35.34 V W68
2023-04-18 07:17:50 C 17 37 31.882 -25 21 17.35 V W68
2023-04-18 07:20:26 C 17 37 31.054 -25 21 19.19 V W68
2023-04-18 07:25:28 C 17 37 29.414 -25 21 23.47 V W68
2023-04-18 07:33:15 C 17 37 26.902 -25 21 29.63 V W68
2023-04-24 04:41:27 C 16 52 01.176 -26 42 19.48 V W68
2023-04-24 04:45:26 C 16 51 59.820 -26 42 21.20 V W68
2023-04-24 05:36:55 C 16 51 42.638 -26 42 40.68 V W68
2023-04-25 23:36:53 C 16 38 05.702 -26 53 57.23 V M22
2023-04-25 23:39:42 C 16 38 04.764 -26 53 57.77 V M22
2023-04-25 23:43:53 C 16 38 03.382 -26 53 58.67 V M22
2023-04-26 00:23:12 C 16 37 50.316 -26 54 07.06 V M22
2023-04-28 23:16:47 C 16 15 22.322 -26 59 42.32 V M22
2023-04-28 23:20:19 C 16 15 21.197 -26 59 42.32 V M22
2023-04-28 23:24:45 C 16 15 19.769 -26 59 42.25 V M22
2023-05-03 04:14:07 C 15 45 25.358 -26 42 03.42 V W68
2023-05-03 04:17:35 C 15 45 24.331 -26 42 02.38 V W68
2023-05-03 04:25:40 C 15 45 22.001 -26 42 00.29 V W68
2023-05-03 04:41:02 C 15 45 17.542 -26 41 55.72 V W68
2023-05-04 04:21:17 C 15 38 44.633 -26 34 08.83 V W68
2023-05-04 04:28:47 C 15 38 42.528 -26 34 06.71 V W68
2023-05-04 04:31:25 C 15 38 41.753 -26 34 05.70 V W68
2023-05-04 04:38:45 C 15 38 39.708 -26 34 03.61 V W68
2023-05-09 05:55:24 C 15 08 26.191 -25 39 18.68 V W68
2023-05-09 06:03:55 C 15 08 24.182 -25 39 13.57 V W68
2023-05-09 06:18:21 C 15 08 20.810 -25 39 05.94 V W68
2023-05-10 23:58:51 C 14 59 19.632 -25 16 28.27 V M22
2023-05-11 00:02:52 C 14 59 18.758 -25 16 25.86 V M22
2023-05-11 00:10:16 C 14 59 17.174 -25 16 21.58 V M22
2023-05-11 00:38:30 C 14 59 11.110 -25 16 04.98 V M22
2023-05-12 04:55:42 C 14 53 28.747 -25 00 11.38 V W68
2023-05-12 04:59:59 C 14 53 27.845 -25 00 08.82 V W68
2023-05-12 05:07:50 C 14 53 26.251 -25 00 04.75 V W68
2023-05-12 05:23:53 C 14 53 22.944 -24 59 55.28 V W68
2023-05-15 05:08:17 C 14 40 17.722 -24 18 34.38 V W68
2023-05-15 05:12:27 C 14 40 17.002 -24 18 31.97 V W68
2023-05-15 05:20:22 C 14 40 15.600 -24 18 27.29 V W68
2023-05-15 05:42:36 C 14 40 11.690 -24 18 13.90 V W68
2023-05-16 21:42:15 C 14 33 45.643 -23 55 13.84 V M22
2023-05-16 21:46:52 C 14 33 44.902 -23 55 11.03 V M22
2023-05-16 21:49:31 C 14 33 44.474 -23 55 09.55 V M22
2023-05-16 22:01:25 C 14 33 42.545 -23 55 03.11 V M22
2023-05-16 22:04:04 C 14 33 42.132 -23 55 01.52 V M22
2023-05-16 22:08:04 C 14 33 41.491 -23 54 58.82 V M22
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)