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
2024-04-20 20:44:21 C 13 48 08.11 -04 02 17.3 M32
2024-04-20 22:35:15 C 13 46 59.131 -04 08 55.21 V Z80
2024-04-20 22:35:40 C 13 46 58.865 -04 08 56.54 V Z80
2024-04-20 22:36:04 C 13 46 58.596 -04 08 57.84 V Z80
2024-04-21 20:34:51 B 13 35 17.88 -05 15 34.7 X L76
2024-04-21 20:37:56 B 13 35 16.37 -05 15 42.8 X L76
2024-04-21 20:41:01 B 13 35 14.86 -05 15 51.0 X L76
2024-04-21 20:44:06 B 13 35 13.35 -05 15 59.1 X L76
2024-04-21 20:47:11 B 13 35 11.84 -05 16 07.2 X L76
2024-04-21 20:50:16 B 13 35 10.33 -05 16 15.3 X L76
2024-04-21 20:53:22 B 13 35 08.83 -05 16 23.5 X L76
2024-04-21 20:56:27 B 13 35 07.32 -05 16 31.6 X L76
2024-04-21 21:02:56 B 13 35 04.16 -05 16 48.7 X L76
2024-04-21 21:09:29 B 13 35 00.97 -05 17 05.7 X L76
2024-04-21 21:48:03 C 13 34 45.754 -05 18 51.80 Z C23
2024-04-21 21:50:30 C 13 34 44.558 -05 18 58.32 Z C23
2024-04-21 22:25:02 C 13 34 28.001 -05 20 28.00 Z C23
2024-04-21 22:29:06 C 13 34 26.052 -05 20 38.80 Z C23
2024-04-24 00:47:42 C 13 16 58.62 -06 57 26.7 834
2024-04-24 01:23:36 C 13 16 48.27 -06 58 22.0 834
2024-04-24 20:45:24 C 13 12 05.974 -07 27 12.92 Z C23
2024-04-24 20:47:09 C 13 12 05.582 -07 27 15.16 Z C23
2024-04-24 20:59:39 C 13 12 02.582 -07 27 31.03 Z C23
2024-04-25 19:41:14 B 13 07 29.760 -07 51 48.89 Z M49
2024-04-25 20:00:29 B 13 07 25.860 -07 52 09.48 Z M49
2024-04-25 20:04:21 C 13 07 24.24 -07 53 50.0 X G02
2024-04-25 20:09:23 C 13 07 23.24 -07 53 55.3 X G02
2024-04-25 20:14:24 C 13 07 22.25 -07 54 00.6 X G02
2024-04-25 20:20:34 B 13 07 21.766 -07 52 30.90 Z M49
2024-04-25 21:08:51 B 13 07 11.911 -07 53 21.77 Z M49
2024-04-25 21:28:03 B 13 07 08.004 -07 53 41.78 Z M49
2024-04-25 21:50:23 B 13 07 03.463 -07 54 04.82 Z M49
2024-04-25 23:54:34 B 13 06 38.621 -07 56 10.07 Z M49
2024-04-26 00:14:29 B 13 06 34.742 -07 56 29.65 Z M49
2024-04-26 00:35:15 B 13 06 30.720 -07 56 49.99 Z M49
2024-04-26 01:01:38 B 13 06 25.682 -07 57 15.66 Z M49
2024-04-26 01:22:07 B 13 06 21.823 -07 57 35.46 Z M49
2024-04-26 01:43:27 B 13 06 17.851 -07 57 55.87 Z M49
2024-04-26 02:35:42 C 13 06 15.20 -08 00 13.1 V W46
2024-04-26 02:51:03 C 13 06 12.24 -08 00 28.5 V W46
2024-04-26 03:10:22 C 13 06 08.55 -08 00 47.9 V W46
2024-04-27 01:12:44 B 13 02 41.23 -08 20 53.5 q W51
2024-04-27 02:16:46 B 13 02 31.02 -08 21 47.9 q W51
2024-04-27 03:15:12 B 13 02 21.68 -08 22 36.9 q W51
2024-04-27 03:57:13 C 13 02 14.803 -08 21 43.96 V W68
2024-04-27 04:01:48 C 13 02 14.062 -08 21 47.74 V W68
2024-04-27 04:09:38 C 13 02 12.787 -08 21 54.18 V W68
2024-04-27 04:24:43 C 13 02 10.380 -08 22 06.64 V W68
2024-04-27 19:53:45 C 13 00 09.10 -08 35 44.0 X G02
2024-04-27 19:54:09 B 13 00 09.384 -08 35 36.01 V L92
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)