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
2024-04-30 20:36:46 C 12 53 00.34 -09 19 30.3 X G02
2024-04-30 20:47:56 C 12 52 59.37 -09 19 35.9 X G02
2024-04-30 21:37:16 B 12 52 55.546 -09 20 01.93 V L65
2024-04-30 21:41:23 B 12 52 55.195 -09 20 04.13 V L65
2024-04-30 21:45:31 B 12 52 54.835 -09 20 06.25 V L65
2024-04-30 21:51:18 C 12 52 53.69 -09 20 04.4 V L54
2024-04-30 22:51:37 C 12 52 48.55 -09 20 32.9 V L54
2024-04-30 23:56:44 C 12 52 43.06 -09 21 03.4 V L54
2024-05-01 22:01:24 C 12 51 14.131 -09 31 20.93 Z C23
2024-05-01 22:05:19 C 12 51 13.891 -09 31 21.18 Z C23
2024-05-01 22:22:35 C 12 51 12.624 -09 31 27.62 Z C23
2024-05-02 08:49:55 C 12 50 34.334 -09 35 36.35 V T05
2024-05-02 09:09:16 C 12 50 32.902 -09 35 44.41 V T05
2024-05-02 09:14:29 C 12 50 32.520 -09 35 46.57 V T05
2024-05-02 09:24:01 C 12 50 31.824 -09 35 50.42 V T05
2024-05-02 21:21:48 C 12 49 51.468 -09 39 57.20 V M22
2024-05-02 21:26:26 C 12 49 51.156 -09 39 59.04 V M22
2024-05-02 21:35:42 C 12 49 50.537 -09 40 02.64 V M22
2024-05-02 21:49:49 C 12 49 49.601 -09 40 08.18 V M22
2024-05-03 21:33:00 C 12 48 39.425 -09 50 12.44 Z C23
2024-05-03 22:20:27 C 12 48 36.835 -09 50 29.54 Z C23
2024-05-04 20:44:39 C 12 47 40.40 -09 58 15.7 X G02
2024-05-04 20:51:22 C 12 47 40.08 -09 58 17.7 X G02
2024-05-04 20:57:48 C 12 47 39.76 -09 58 20.1 X G02
2024-05-05 19:24:58 C 12 46 51.53 -10 05 33.7 V C40
2024-05-05 19:28:30 C 12 46 51.34 -10 05 35.1 V C40
2024-05-05 19:32:01 C 12 46 51.24 -10 05 35.7 V C40
2024-05-05 19:42:36 C 12 46 50.80 -10 05 38.7 V C40
2024-05-05 19:46:08 C 12 46 50.66 -10 05 41.1 V C40
2024-05-05 19:49:40 C 12 46 50.46 -10 05 41.1 V C40
2024-05-05 19:53:11 C 12 46 50.34 -10 05 41.9 V C40
2024-05-05 19:56:42 C 12 46 50.15 -10 05 43.4 V C40
2024-05-05 20:00:14 C 12 46 50.07 -10 05 44.2 V C40
2024-05-05 20:03:46 C 12 46 49.94 -10 05 46.1 V C40
2024-05-06 08:11:11 C 12 46 27.627 -10 09 15.84 X F51
2024-05-06 08:26:38 C 12 46 26.983 -10 09 20.45 X F51
2024-05-06 08:26:47 C 12 46 26.986 -10 09 20.48 V T05
2024-05-06 08:30:57 C 12 46 26.815 -10 09 21.78 V T05
2024-05-06 08:38:46 C 12 46 26.484 -10 09 24.16 V T05
2024-05-06 08:42:08 C 12 46 26.338 -10 09 25.08 X F51
2024-05-06 08:59:49 C 12 46 25.608 -10 09 30.46 V T05
2024-05-06 20:54:51 C 12 46 05.638 -10 12 25.45 V M22
2024-05-06 21:00:10 C 12 46 05.443 -10 12 27.04 V M22
2024-05-06 21:10:07 C 12 46 05.066 -10 12 29.84 V M22
2024-05-06 21:26:00 C 12 46 04.483 -10 12 34.52 V M22
2024-05-07 11:55:54 C 12 45 44.594 -10 16 50.99 V P07
2024-05-07 13:05:39 C 12 45 42.247 -10 17 10.82 V P07
2024-05-07 13:07:29 C 12 45 42.204 -10 17 11.98 V P07
2024-05-07 14:01:48 C 12 45 40.342 -10 17 27.49 V P07
2024-05-07 15:54:23 C 12 45 36.576 -10 17 57.30 V P07
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)