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
2023-05-16 22:09:24 C 14 33 41.273 -23 54 58.18 V M22
2023-05-18 04:17:56 C 14 29 12.706 -23 37 54.70 V W68
2023-05-18 04:25:27 C 14 29 11.556 -23 37 50.52 V W68
2023-05-18 04:59:46 C 14 29 06.437 -23 37 30.47 V W68
2023-05-18 05:05:10 C 14 29 05.623 -23 37 26.87 V W68
2023-05-18 08:27:30 C 14 28 37.784 -23 35 55.13 X F52
2023-05-18 09:00:30 C 14 28 32.863 -23 35 36.88 X F52
2023-05-18 09:17:01 C 14 28 30.400 -23 35 27.58 X F52
2023-05-19 21:40:22 C 14 23 34.649 -23 15 02.38 V M22
2023-05-19 21:47:48 C 14 23 33.648 -23 14 58.31 V M22
2023-05-19 21:53:51 C 14 23 32.810 -23 14 55.14 V M22
2023-05-19 22:08:26 C 14 23 30.842 -23 14 46.86 V M22
2023-05-21 03:27:31 C 14 19 51.977 -22 59 07.44 V W68
2023-05-21 03:32:03 C 14 19 51.468 -22 59 04.49 V W68
2023-05-21 03:46:36 C 14 19 49.505 -22 58 57.58 V W68
2023-05-21 03:54:31 C 14 19 48.619 -22 58 52.72 V W68
2023-05-25 06:40:41 C 14 09 24.718 -22 10 19.85 V 703
2023-05-25 06:48:38 C 14 09 23.951 -22 10 15.31 V 703
2023-05-25 06:56:35 C 14 09 23.206 -22 10 11.93 V 703
2023-05-25 07:04:32 C 14 09 22.388 -22 10 08.11 V 703
2023-05-26 06:25:47 C 14 07 18.790 -21 59 34.44 V G96
2023-05-26 06:33:26 C 14 07 18.116 -21 59 30.98 V G96
2023-05-26 06:41:04 C 14 07 17.404 -21 59 27.53 V G96
2023-05-26 06:48:44 C 14 07 16.720 -21 59 24.14 V G96
2023-05-26 08:36:53 C 14 07 07.916 -21 58 33.62 X F52
2023-05-26 09:08:21 C 14 07 05.058 -21 58 19.60 X F52
2023-05-26 09:24:04 C 14 07 03.634 -21 58 12.50 X F52
2023-05-29 04:12:04 C 14 01 57.436 -21 30 24.48 V 703
2023-05-29 04:20:19 C 14 01 56.881 -21 30 19.08 V 703
2023-05-29 04:36:51 C 14 01 55.654 -21 30 12.53 V 703
2023-06-10 06:45:32 C 13 49 51.890 -20 06 46.36 X F51
2023-06-10 07:01:15 C 13 49 51.521 -20 06 43.35 X F51
2023-06-10 07:16:58 C 13 49 51.155 -20 06 40.38 X F51
2023-06-13 04:53:40 C 13 48 50.857 -19 54 57.20 V G96
2023-06-13 05:01:13 C 13 48 50.746 -19 54 56.63 V G96
2023-06-13 05:08:47 C 13 48 50.656 -19 54 55.40 V G96
2023-06-13 05:16:21 C 13 48 50.526 -19 54 53.86 V G96
2024-04-13 03:56:39 C 21 23 10.559 +20 41 44.48 V Z84
2024-04-13 03:57:11 C 21 23 09.450 +20 41 46.21 V Z84
2024-04-13 03:58:59 C 21 23 05.652 +20 41 50.92 V Z84
2024-04-13 04:00:33 C 21 23 02.357 +20 41 55.51 V Z84
2024-04-13 19:14:27 C 20 46 34.18 +21 11 34.3 Z D35
2024-04-13 19:15:18 C 20 46 31.82 +21 11 35.5 Z D35
2024-04-13 19:16:05 C 20 46 29.68 +21 11 36.8 Z D35
2024-04-13 19:16:51 C 20 46 27.56 +21 11 37.7 Z D35
2024-04-13 19:17:42 C 20 46 25.17 +21 11 39.0 Z D35
2024-04-13 19:18:27 C 20 46 23.05 +21 11 40.0 Z D35
2024-04-13 19:19:11 C 20 46 21.01 +21 11 40.9 Z D35
2024-04-14 21:16:13 C 19 17 49.44 +20 15 07.6 q 168
2024-04-14 21:36:12 C 19 16 28.56 +20 13 05.6 q 168
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)