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
2013-07-16 07:52:07 C 23 49 21.46 -29 02 02.5 u 807
2013-07-16 07:54:37 C 23 49 21.82 -29 02 04.9 u 807
2013-07-16 07:57:19 C 23 49 22.20 -29 02 07.5 u 807
2013-07-16 07:59:59 C 23 49 22.59 -29 02 10.2 u 807
2013-07-18 06:35:28 C 23 56 44.14 -29 49 39.1 r Y00
2013-07-18 06:37:27 C 23 56 44.47 -29 49 41.0 r Y00
2013-07-18 06:40:08 C 23 56 44.88 -29 49 44.2 r Y00
2013-07-20 19:52:46 C 00 07 39.52 -30 59 44.1 q E12
2013-07-20 19:57:47 C 00 07 40.44 -30 59 50.2 q E12
2013-07-22 07:31:44 C 00 14 51.33 -31 45 11.1 r Y00
2013-07-22 07:34:20 C 00 14 51.87 -31 45 14.6 r Y00
2013-07-22 07:36:54 C 00 14 52.41 -31 45 18.7 r Y00
2013-07-23 05:06:23 C 00 19 35.16 -32 14 17.8 r Y00
2013-07-23 05:08:27 C 00 19 35.55 -32 14 21.4 r Y00
2013-07-23 05:10:33 C 00 19 36.07 -32 14 24.3 r Y00
2013-07-26 18:44:23 C 00 41 34.63 -34 23 27.1 q E12
2013-07-26 18:46:48 C 00 41 35.31 -34 23 31.2 q E12
2013-07-26 19:54:59 C 00 41 54.67 -34 25 21.4 q E12
2013-07-26 19:58:17 C 00 41 55.59 -34 25 26.8 q E12
2013-08-05 08:45:50 C 02 30 20.33 -41 05 00.5 u 807
2013-08-05 08:49:47 C 02 30 23.13 -41 05 06.0 u 807
2013-08-05 08:53:25 C 02 30 25.68 -41 05 10.8 u 807
2013-08-05 08:57:03 C 02 30 28.28 -41 05 16.0 u 807
2013-08-05 09:01:23 C 02 30 31.33 -41 05 21.9 u 807
2014-05-27 04:21:44 C 21 29 11.976 -25 47 15.83 t J04
2014-05-27 04:28:13 C 21 29 12.285 -25 47 17.16 t J04
2014-05-27 04:34:43 C 21 29 12.601 -25 47 18.40 t J04
2014-05-27 04:52:15 C 21 29 13.44 -25 47 21.8 t 950
2014-05-27 04:55:02 C 21 29 13.60 -25 47 22.4 t 950
2014-05-27 04:57:49 C 21 29 13.73 -25 47 22.9 t 950
2014-05-27 05:00:35 C 21 29 13.85 -25 47 23.3 t 950
2014-05-27 05:03:22 C 21 29 13.98 -25 47 24.0 t 950
2014-05-27 05:06:09 C 21 29 14.13 -25 47 24.4 t 950
2014-05-27 08:46:37 C 21 29 25.28 -25 47 56.7 u 807
2014-05-27 08:55:20 C 21 29 25.69 -25 47 58.4 u 807
2014-05-27 09:06:12 C 21 29 26.22 -25 48 00.5 u 807
2014-05-28 04:14:45 C 21 30 24.285 -25 51 50.70 t J04
2014-05-28 04:21:15 C 21 30 24.611 -25 51 52.08 t J04
2014-05-28 04:27:44 C 21 30 24.923 -25 51 53.71 t J04
2014-06-29 12:47:29 C 21 53 46.405 -32 24 26.00 L F51
2014-06-29 13:02:41 C 21 53 46.313 -32 24 40.85 L F51
2014-06-29 13:17:49 C 21 53 46.227 -32 24 55.56 L F51
2014-06-29 13:32:58 C 21 53 46.134 -32 25 10.21 L F51
2014-08-07 23:59:53 C 18 56 55.56 -61 57 16.4 r Y00
2014-08-08 00:05:43 C 18 56 51.49 -61 57 25.0 r Y00
2014-08-08 00:11:51 C 18 56 47.28 -61 57 33.7 r Y00
2014-08-08 01:35:18 C 18 55 51.73 -61 59 23.4 u 807
2014-08-08 01:39:33 C 18 55 48.82 -61 59 29.9 u 807
2014-08-08 01:43:49 C 18 55 45.87 -61 59 35.6 u 807
2014-08-08 01:48:03 C 18 55 42.89 -61 59 41.1 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)