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
2025-04-26 04:01:17 C 07 53 38.306 +26 09 42.73 V 703
2025-04-26 04:04:35 C 07 53 40.463 +26 09 32.18 V 703
2025-04-26 04:07:54 C 07 53 42.623 +26 09 22.54 V 703
2025-04-26 08:10:50 C 07 56 23.803 +25 57 08.24 V T08
2025-04-26 08:12:10 C 07 56 24.732 +25 57 03.46 V T08
2025-04-26 08:16:13 C 07 56 27.442 +25 56 50.46 V T08
2025-04-26 08:24:12 C 07 56 32.698 +25 56 25.55 V T08
2025-04-26 08:38:53 C 07 56 42.298 +25 55 39.04 V T08
2025-04-29 04:54:02 C 08 38 46.496 +22 12 57.96 V 703
2025-04-29 04:57:16 C 08 38 48.332 +22 12 47.02 V 703
2025-04-29 05:00:31 C 08 38 50.143 +22 12 36.18 V 703
2025-04-29 05:03:45 C 08 38 51.907 +22 12 25.27 V 703
2025-04-30 05:34:14 C 08 52 18.840 +20 49 26.15 V 703
2025-04-30 05:37:30 C 08 52 20.546 +20 49 14.88 V 703
2025-04-30 05:40:46 C 08 52 22.271 +20 49 03.18 V 703
2025-04-30 05:44:02 C 08 52 23.974 +20 48 52.20 V 703
2025-05-01 06:09:55 C 09 04 56.111 +19 26 33.04 V 703
2025-05-01 06:13:11 C 09 04 57.720 +19 26 21.98 V 703
2025-05-01 06:19:42 C 09 05 00.805 +19 25 58.66 V 703
2025-05-01 20:31:24 B 09 11 55.745 +18 38 37.10 Z K35
2025-05-01 20:31:39 B 09 11 55.841 +18 38 36.10 Z K35
2025-05-02 04:54:13 C 09 15 51.628 +18 11 09.38 V 703
2025-05-02 04:57:28 C 09 15 53.118 +18 10 58.04 V 703
2025-05-02 05:00:42 C 09 15 54.652 +18 10 47.64 V 703
2025-05-02 05:03:57 C 09 15 56.077 +18 10 36.77 V 703
2025-05-03 05:54:14 C 09 27 05.028 +16 50 22.45 V T05
2025-05-03 05:58:33 C 09 27 06.835 +16 50 08.38 V T05
2025-05-03 06:06:24 C 09 27 10.147 +16 49 43.21 V T05
2025-05-03 06:29:38 C 09 27 19.937 +16 48 29.12 V T05
2025-05-08 07:09:30 C 10 11 17.837 +11 00 26.93 V T08
2025-05-08 07:47:39 C 10 11 29.206 +10 58 48.72 V T08
2025-05-08 08:15:31 C 10 11 37.505 +10 57 36.83 V T08
2025-05-08 08:33:36 C 10 11 42.866 +10 56 50.39 V T08
2025-05-09 06:41:20 C 10 18 16.486 +10 01 37.09 V T05
2025-05-09 06:48:00 C 10 18 18.401 +10 01 20.46 V T05
2025-05-09 07:02:32 C 10 18 22.404 +10 00 44.64 V T05
2025-05-09 07:10:32 C 10 18 24.614 +10 00 25.52 V T05
2025-05-13 07:47:31 C 10 42 56.930 +06 28 07.61 V T05
2025-05-13 07:52:47 C 10 42 58.106 +06 27 57.56 V T05
2025-05-13 08:01:26 C 10 42 59.983 +06 27 40.72 V T05
2025-05-13 08:15:57 C 10 43 03.132 +06 27 11.66 V T05
2025-05-16 14:24:54 C 10 59 10.790 +04 05 09.44 W O18
2025-05-16 14:59:28 C 10 59 17.167 +04 04 11.33 W O18
2025-05-17 14:25:31 C 11 03 37.121 +03 26 00.63 W O18
2025-05-17 15:00:10 C 11 03 43.174 +03 25 05.44 W O18
2025-05-17 21:12:45 C 11 04 50.249 +03 15 21.35 V R17
2025-05-17 21:33:17 C 11 04 53.798 +03 14 48.88 V R17
2025-05-17 21:53:50 C 11 04 57.281 +03 14 16.73 V R17
2025-05-17 22:14:22 C 11 05 00.845 +03 13 44.33 V R17
2025-05-19 14:30:30 C 11 11 54.202 +02 13 05.55 W O18
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)