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
2013-07-01 18:54:04 C 23 08 42.57 -25 07 35.8 q E12
2013-07-01 19:10:26 C 23 08 44.01 -25 07 43.3 q E12
2013-07-01 19:28:55 C 23 08 45.64 -25 07 51.4 q E12
2013-07-01 19:45:14 C 23 08 47.20 -25 07 58.5 q E12
2013-07-02 09:42:58 C 23 10 07.35 -25 14 15.0 u 807
2013-07-02 09:47:20 C 23 10 07.75 -25 14 17.0 u 807
2013-07-02 09:51:44 C 23 10 08.16 -25 14 19.0 u 807
2013-07-02 09:56:07 C 23 10 08.55 -25 14 21.0 u 807
2013-07-02 10:00:31 C 23 10 08.95 -25 14 23.0 u 807
2013-07-02 16:43:36 C 23 10 48.59 -25 17 27.3 q Q62
2013-07-02 16:44:47 C 23 10 48.62 -25 17 26.7 o E23
2013-07-02 16:46:56 C 23 10 48.89 -25 17 29.1 q Q62
2013-07-02 16:50:17 C 23 10 49.18 -25 17 30.8 q Q62
2013-07-02 16:50:29 C 23 10 49.21 -25 17 31.0 q E12
2013-07-02 16:53:06 C 23 10 49.40 -25 17 30.9 o E23
2013-07-02 17:01:26 C 23 10 50.18 -25 17 35.9 o E23
2013-07-02 19:06:15 C 23 11 01.67 -25 18 34.5 q Q63
2013-07-02 19:08:10 C 23 11 01.84 -25 18 35.5 q Q63
2013-07-02 19:10:04 C 23 11 02.03 -25 18 36.4 q Q63
2013-07-02 19:11:58 C 23 11 02.21 -25 18 37.2 q Q63
2013-07-02 19:13:52 C 23 11 02.38 -25 18 38.2 q Q63
2013-07-02 19:15:46 C 23 11 02.55 -25 18 39.1 q Q63
2013-07-02 19:17:41 C 23 11 02.72 -25 18 40.0 q Q63
2013-07-02 19:19:35 C 23 11 02.89 -25 18 40.7 q Q63
2013-07-02 19:21:29 C 23 11 03.07 -25 18 41.6 q Q63
2013-07-02 20:01:15 C 23 11 06.71 -25 19 00.0 q E12
2013-07-03 00:53:50 C 23 11 36.14 -25 21 37.3 t A79
2013-07-03 00:59:56 C 23 11 36.73 -25 21 40.4 t A79
2013-07-03 01:05:51 C 23 11 37.31 -25 21 43.1 t A79
2013-07-03 14:35:51 C 23 12 57.07 -25 27 49.3 q E12
2013-07-03 14:41:13 C 23 12 57.60 -25 27 52.2 q E12
2013-07-03 19:54:32 C 23 13 27.09 -25 30 28.9 q E12
2013-07-04 06:28:49 C 23 14 31.40 -25 35 45.0 u 807
2013-07-04 06:32:14 C 23 14 31.70 -25 35 46.8 u 807
2013-07-04 06:35:21 C 23 14 32.02 -25 35 48.2 u 807
2013-07-04 06:38:22 C 23 14 32.32 -25 35 49.7 u 807
2013-07-04 06:41:24 C 23 14 32.59 -25 35 51.4 u 807
2013-07-06 11:00:00 C 23 19 54.14 -26 04 18.8 o 291
2013-07-06 11:02:40 C 23 19 54.40 -26 04 20.2 o 291
2013-07-06 11:05:20 C 23 19 54.67 -26 04 21.9 o 291
2013-07-06 14:52:09 C 23 20 19.46 -26 06 10.5 q E12
2013-07-06 14:55:53 C 23 20 19.82 -26 06 12.7 q E12
2013-07-06 20:02:08 C 23 20 50.75 -26 09 12.2 q E12
2013-07-08 14:13:02 C 23 25 28.09 -26 34 51.6 c 474
2013-07-08 14:21:15 C 23 25 28.98 -26 34 57.5 c 474
2013-07-08 14:24:50 C 23 25 29.39 -26 34 59.8 c 474
2013-07-08 19:34:53 C 23 26 03.09 -26 38 25.3 q E12
2013-07-12 15:40:05 C 23 37 07.72 -27 44 35.8 q E12
2013-07-12 15:42:36 C 23 37 08.03 -27 44 37.8 q E12
2013-07-16 07:49:14 C 23 49 21.04 -29 01 59.7 u 807
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)