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
2024-04-18 19:50:12 B 14 32 46.362 +00 17 10.07 V L92
2024-04-18 19:50:43 B 14 32 45.776 +00 17 06.32 V L92
2024-04-18 19:51:14 B 14 32 45.099 +00 17 02.23 V L92
2024-04-18 19:51:45 B 14 32 44.448 +00 16 59.15 V L92
2024-04-18 19:51:55 C 14 32 41.87 +00 16 28.4 M32
2024-04-18 19:52:38 C 14 32 40.92 +00 16 22.7 M32
2024-04-18 19:53:20 C 14 32 39.97 +00 16 17.5 M32
2024-04-18 19:54:03 C 14 32 39.01 +00 16 12.0 M32
2024-04-18 19:54:45 C 14 32 38.07 +00 16 06.7 M32
2024-04-18 20:10:50 C 14 32 16.99 +00 14 11.8 V L54
2024-04-18 20:35:30 C 14 31 43.87 +00 11 03.9 V L54
2024-04-18 20:56:28 C 14 31 15.96 +00 08 26.0 V L54
2024-04-18 21:17:30 C 14 30 48.08 +00 05 48.4 V L54
2024-04-18 21:32:15 C 14 30 28.60 +00 03 58.1 V L54
2024-04-19 20:34:35 B 14 06 02.10 -02 18 47.4 X L99
2024-04-19 20:35:43 B 14 06 01.04 -02 18 52.5 X L99
2024-04-19 20:37:51 B 14 05 59.11 -02 19 03.4 X L99
2024-04-19 20:56:42 C 14 05 43.19 -02 20 34.9 M32
2024-04-19 20:57:28 C 14 05 42.47 -02 20 38.8 M32
2024-04-19 20:58:15 C 14 05 41.77 -02 20 42.8 M32
2024-04-19 20:59:03 C 14 05 41.05 -02 20 46.9 M32
2024-04-19 20:59:50 C 14 05 40.32 -02 20 50.8 M32
2024-04-19 21:00:38 C 14 05 39.61 -02 20 54.9 M32
2024-04-19 21:01:16 C 14 05 39.04 -02 20 58.0 M32
2024-04-19 21:47:06 B 14 04 59.602 -02 24 39.42 V 160
2024-04-19 21:50:26 B 14 04 56.582 -02 24 56.09 V 160
2024-04-19 21:52:27 C 14 04 51.523 -02 25 13.66 V 089
2024-04-19 21:53:41 C 14 04 50.398 -02 25 19.83 V 089
2024-04-19 21:53:47 B 14 04 53.575 -02 25 12.90 V 160
2024-04-19 21:54:51 C 14 04 49.339 -02 25 25.82 V 089
2024-04-19 21:55:18 C 14 04 48.947 -02 25 27.89 V 089
2024-04-19 21:57:43 C 14 04 46.759 -02 25 39.89 V 089
2024-04-19 21:58:10 C 14 04 46.383 -02 25 42.19 V 089
2024-04-19 22:03:27 C 14 04 41.615 -02 26 08.85 V 089
2024-04-19 22:06:19 C 14 04 39.053 -02 26 23.02 V 089
2024-04-19 22:09:11 C 14 04 36.474 -02 26 37.27 V 089
2024-04-19 22:12:03 C 14 04 33.930 -02 26 51.64 V 089
2024-04-19 22:17:47 C 14 04 28.789 -02 27 20.07 V 089
2024-04-20 08:43:42 C 13 56 17.623 -03 14 16.22 V T05
2024-04-20 08:46:58 C 13 56 15.089 -03 14 30.19 V T05
2024-04-20 08:51:31 C 13 56 11.537 -03 14 49.67 V T05
2024-04-20 09:06:46 C 13 55 59.686 -03 15 54.65 V T05
2024-04-20 17:53:40 C 13 50 02.278 -03 48 20.52 V M22
2024-04-20 17:56:56 C 13 50 00.091 -03 48 32.90 V M22
2024-04-20 18:01:17 C 13 49 57.194 -03 48 49.32 V M22
2024-04-20 18:50:21 C 13 49 24.689 -03 51 54.00 V M22
2024-04-20 20:38:37 C 13 48 11.85 -04 01 56.4 M32
2024-04-20 20:40:00 C 13 48 10.94 -04 02 01.6 M32
2024-04-20 20:41:35 C 13 48 09.93 -04 02 07.3 M32
2024-04-20 20:43:10 C 13 48 08.90 -04 02 13.0 M32
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)