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
2024-04-14 22:13:19 C 19 13 57.25 +20 09 10.8 q 168
2024-04-14 22:31:09 C 19 12 44.06 +20 07 13.8 q 168
2024-04-14 22:50:13 C 19 11 25.62 +20 05 06.6 q 168
2024-04-14 23:20:20 C 19 09 21.12 +20 01 38.8 q 168
2024-04-16 05:17:32 B 17 04 27.703 +13 39 49.28 X W42
2024-04-16 05:26:00 B 17 03 54.487 +13 37 31.15 X W42
2024-04-16 05:34:28 B 17 03 21.264 +13 35 13.06 X W42
2024-04-16 11:30:53 C 16 41 13.829 +11 56 53.56 V T05
2024-04-16 11:45:30 C 16 40 20.292 +11 52 51.17 V T05
2024-04-16 11:49:51 C 16 40 04.457 +11 51 39.31 V T05
2024-04-16 20:56:09 C 16 09 58.699 +09 19 24.89 Z C23
2024-04-16 20:59:34 C 16 09 48.096 +09 18 31.18 Z C23
2024-04-16 21:13:11 C 16 09 06.137 +09 14 58.74 Z C23
2024-04-16 21:16:50 C 16 08 54.845 +09 14 01.90 Z C23
2024-04-16 22:26:32 C 16 05 21.434 +08 55 58.66 Z C23
2024-04-16 22:28:44 C 16 05 14.818 +08 55 24.31 Z C23
2024-04-16 23:28:53 C 16 02 13.092 +08 39 58.00 Z C23
2024-04-16 23:32:20 C 16 02 02.875 +08 39 05.44 Z C23
2024-04-17 00:12:29 C 16 00 04.382 +08 28 49.37 V Z80
2024-04-17 00:15:26 C 15 59 54.286 +08 28 06.82 Z C23
2024-04-17 00:17:23 C 15 59 48.480 +08 27 37.22 Z C23
2024-04-17 00:20:49 C 15 59 39.694 +08 26 42.54 V Z80
2024-04-17 00:29:37 C 15 59 13.658 +08 24 28.40 V Z80
2024-04-17 01:41:32 C 15 55 36.874 +08 13 54.59 V M22
2024-04-17 01:56:50 C 15 54 52.344 +08 10 02.89 V M22
2024-04-17 02:21:03 C 15 53 42.324 +08 03 57.28 V M22
2024-04-17 21:13:27 C 15 09 19.596 +03 48 24.26 Z C23
2024-04-17 21:15:10 C 15 09 16.162 +03 48 05.04 Z C23
2024-04-17 21:17:38 C 15 09 11.275 +03 47 37.72 Z C23
2024-04-17 22:11:55 C 15 07 23.081 +03 37 31.58 Z C23
2024-04-17 22:14:38 C 15 07 17.698 +03 37 02.32 Z C23
2024-04-17 22:16:34 C 15 07 13.862 +03 36 40.03 Z C23
2024-04-18 09:05:07 C 14 48 05.321 +01 48 10.87 V 703
2024-04-18 09:08:24 C 14 47 59.888 +01 47 40.42 V 703
2024-04-18 09:11:41 C 14 47 54.463 +01 47 10.18 V 703
2024-04-18 09:14:58 C 14 47 49.052 +01 46 39.83 V 703
2024-04-18 19:23:17 C 14 33 12.30 +00 20 24.3 X N42
2024-04-18 19:24:05 C 14 33 11.19 +00 20 18.0 X N42
2024-04-18 19:24:48 C 14 33 10.20 +00 20 12.5 X N42
2024-04-18 19:40:55 B 14 32 58.834 +00 18 21.02 V L92
2024-04-18 19:41:26 B 14 32 58.329 +00 18 17.40 V L92
2024-04-18 19:41:57 B 14 32 57.612 +00 18 15.02 V L92
2024-04-18 19:42:28 B 14 32 56.940 +00 18 11.70 V L92
2024-04-18 19:46:34 B 14 32 51.342 +00 17 38.40 V L92
2024-04-18 19:47:05 B 14 32 50.681 +00 17 34.86 V L92
2024-04-18 19:47:36 B 14 32 49.955 +00 17 30.77 V L92
2024-04-18 19:48:07 B 14 32 49.142 +00 17 27.21 V L92
2024-04-18 19:48:38 B 14 32 48.611 +00 17 22.58 V L92
2024-04-18 19:49:10 B 14 32 47.762 +00 17 18.14 V L92
2024-04-18 19:49:41 B 14 32 47.059 +00 17 14.47 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)