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
2025-05-19 15:08:25 C 11 12 00.311 +02 12 10.32 W O18
2025-05-20 01:54:38 C 11 13 45.665 +01 57 13.25 V W68
2025-05-20 01:59:52 C 11 13 46.452 +01 57 05.51 V W68
2025-05-20 02:07:55 C 11 13 47.671 +01 56 54.24 V W68
2025-05-20 02:23:04 C 11 13 50.047 +01 56 31.85 V W68
2025-05-21 04:33:54 C 11 17 57.775 +01 20 01.82 V G96
2025-05-21 04:42:11 C 11 17 59.010 +01 19 50.59 V G96
2025-05-21 04:50:26 C 11 18 00.245 +01 19 39.47 V G96
2025-05-21 04:58:42 C 11 18 01.476 +01 19 28.42 V G96
2025-05-24 14:40:03 C 11 29 49.040 -00 22 44.84 W O18
2025-05-24 14:58:33 C 11 29 51.523 -00 23 06.54 W O18
2025-05-24 15:50:38 C 11 29 58.323 -00 24 06.97 W O18
2025-05-25 07:09:17 C 11 32 01.555 -00 41 35.12 V T05
2025-05-25 07:14:31 C 11 32 02.246 -00 41 41.64 V T05
2025-05-25 07:17:47 C 11 32 02.669 -00 41 45.56 V T05
2025-05-25 07:23:04 C 11 32 03.338 -00 41 51.58 V T05
2025-05-25 07:38:34 C 11 32 05.321 -00 42 08.93 V T05
2025-05-25 20:51:23 C 11 33 49.087 -00 56 39.95 V M22
2025-05-25 20:57:22 C 11 33 49.860 -00 56 47.18 V M22
2025-05-25 21:06:30 C 11 33 50.962 -00 56 57.16 V M22
2025-05-25 21:21:28 C 11 33 52.867 -00 57 13.32 V M22
2025-05-27 14:45:12 C 11 39 07.356 -01 41 59.99 W O18
2025-05-27 15:51:13 C 11 39 15.212 -01 43 08.13 W O18
2025-05-29 21:16:11 C 11 45 37.406 -02 36 21.53 V R17
2025-05-29 21:36:32 C 11 45 39.643 -02 36 41.00 V R17
2025-05-29 21:56:55 C 11 45 41.870 -02 37 00.34 V R17
2025-05-29 22:17:17 C 11 45 44.150 -02 37 19.67 V R17
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)