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
2014-08-09 03:28:52 C 18 37 55.22 -62 30 57.0 q W88
2014-08-09 03:29:51 C 18 37 54.53 -62 30 57.8 q W88
2014-08-09 03:50:42 C 18 37 39.25 -62 31 18.6 q W88
2014-08-09 03:59:11 C 18 37 33.01 -62 31 27.0 q W88
2014-08-09 04:00:10 C 18 37 32.33 -62 31 28.3 q W88
2015-05-13 08:32:18 C 20 45 54.69 -26 56 35.6 u 807
2015-05-13 08:42:09 C 20 45 55.07 -26 56 37.6 u 807
2015-05-13 08:52:25 C 20 45 55.53 -26 56 39.9 u 807
2015-06-13 06:21:05 C 20 59 05.62 -31 52 42.1 u 807
2015-06-13 06:25:31 C 20 59 05.51 -31 52 45.5 u 807
2015-06-13 06:30:06 C 20 59 05.41 -31 52 48.7 u 807
2015-06-13 06:34:15 C 20 59 05.33 -31 52 51.5 u 807
2015-06-13 06:38:50 C 20 59 05.23 -31 52 54.7 u 807
2015-06-27 04:31:16 C 20 43 50.08 -36 36 58.6 u 807
2015-06-27 04:36:29 C 20 43 49.65 -36 37 03.8 u 807
2015-06-27 04:41:40 C 20 43 49.21 -36 37 09.4 u 807
2017-05-06 14:12:16 C 19 52 39.089 -29 03 41.47 L F51
2017-05-06 14:22:33 C 19 52 39.216 -29 03 44.92 L F51
2017-05-06 14:32:50 C 19 52 39.311 -29 03 48.09 L F51
2017-05-06 14:43:09 C 19 52 39.419 -29 03 51.42 L F51
2021-06-17 12:34:32 C 15 18 16.274 -29 45 59.18 V P07
2021-06-17 13:55:30 C 15 18 08.810 -29 45 25.16 V P07
2021-06-17 14:14:46 C 15 18 07.008 -29 45 16.78 V P07
2021-06-17 15:28:56 C 15 18 00.197 -29 44 44.45 V P07
2022-04-24 07:44:01 C 17 44 54.406 -28 38 14.28 V W68
2022-04-24 07:48:14 C 17 44 53.738 -28 38 16.33 V W68
2022-04-24 07:55:19 C 17 44 52.606 -28 38 20.69 V W68
2022-04-24 08:03:21 C 17 44 51.317 -28 38 24.29 V W68
2022-05-10 05:26:01 C 16 34 49.392 -30 36 35.57 V W68
2022-05-10 05:36:57 C 16 34 47.119 -30 36 36.32 V W68
2022-05-10 05:42:50 C 16 34 45.943 -30 36 36.04 V W68
2022-05-10 05:53:05 C 16 34 43.747 -30 36 36.25 V W68
2022-05-15 02:56:24 C 16 11 10.963 -30 28 18.01 V W68
2022-05-15 03:00:23 C 16 11 10.118 -30 28 18.16 V W68
2022-05-15 03:08:14 C 16 11 08.515 -30 28 17.40 V W68
2022-05-15 03:23:32 C 16 11 05.376 -30 28 13.84 V W68
2022-05-26 04:12:27 C 15 23 44.038 -29 00 46.26 V W68
2022-05-26 04:17:41 C 15 23 43.219 -29 00 43.74 V W68
2022-05-26 04:25:30 C 15 23 41.986 -29 00 40.10 V W68
2022-05-26 04:40:21 C 15 23 39.629 -29 00 33.26 V W68
2022-05-27 05:17:41 C 15 19 56.016 -28 49 20.14 V W68
2022-05-27 05:22:19 C 15 19 55.320 -28 49 17.72 V W68
2022-05-27 05:31:39 C 15 19 53.899 -28 49 13.19 V W68
2022-05-27 05:46:44 C 15 19 51.588 -28 49 06.31 V W68
2022-05-31 06:08:25 C 15 06 37.242 -28 03 32.47 V 703
2022-05-31 06:32:07 C 15 06 34.312 -28 03 21.74 V 703
2022-06-06 06:31:55 C 14 50 42.886 -26 54 32.58 U F52
2022-06-06 06:47:33 C 14 50 41.340 -26 54 25.53 U F52
2022-06-06 07:03:10 C 14 50 39.786 -26 54 18.47 U F52
2023-04-04 03:15:30 C 19 10 09.370 -19 09 13.36 V M22
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)