505657 (2014 SR339)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3038419333 ± 7.39e-09
Semi-major axis (a)1.2993972631 AU ± 1.94e-09
Inclination (i)29.79560738° ± 3.17e-06
Long. of Asc. Node (Ω)138.73679631° ± 6.75e-07
Arg. of Perihelion (ω)299.64741779° ± 2.68e-06
Mean Anomaly (M)123.31778987° ± 5.03e-06
Mean Motion (n)0.6654253698°/day ± 1.49e-09
Perihelion dist (q)0.90458589 AU ± 9.70e-09
Aphelion dist (Q)1.69420864 AU ± 9.93e-09
Orbital Period1.48119733 yr ± 3.31e-09
Physical Parameters
H (abs. magnitude)18.48
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.482″
Uncertainty0
Orbit TypeApollo
MOID0.035437 AU
Observations Used1501
Radar Obs Used6
Oppositions1
Arc Total2014-2024
First Observation Used2014-10-02
Last Observation Used2024-06-12
Observations (2286)
Date Type RA Dec Mag Band Observatory
2018-02-13 19:08:36 C 06 38 08.87 +45 25 41.8 U G34
2018-02-13 19:18:59 C 06 38 13.01 +45 27 40.7 U G34
2018-02-13 19:24:15 C 06 38 15.09 +45 28 40.5 U G34
2018-02-13 19:34:42 C 06 38 19.24 +45 30 39.5 U G34
2018-02-14 18:45:35 C 06 48 06.30 +49 28 45.3 U K74
2018-02-14 18:47:47 C 06 48 07.18 +49 29 06.3 U K74
2018-02-14 18:49:34 C 06 48 07.88 +49 29 22.8 U K74
2018-02-14 18:53:39 C 06 48 09.47 +49 30 00.9 U K74
2018-02-14 18:57:38 C 06 48 11.01 +49 30 38.3 U K74
2018-02-14 22:56:40 C 06 49 53.19 +50 06 59.3 q I15
2018-02-14 22:59:07 C 06 49 54.15 +50 07 21.7 q I15
2018-02-14 23:00:55 C 06 49 54.86 +50 07 38.0 q I15
2018-02-17 17:13:32 C 07 16 25.53 +57 45 11.3 q C97
2018-02-17 17:15:25 C 07 16 26.18 +57 45 21.3 q C97
2018-02-17 17:17:19 C 07 16 26.71 +57 45 30.4 q C97
2018-02-17 17:19:12 C 07 16 27.52 +57 45 41.1 q C97
2018-02-17 17:21:06 C 07 16 28.19 +57 45 51.4 q C97
2018-02-19 15:25:05 C 07 33 50.30 +61 08 17.3 q C97
2018-02-19 15:26:59 C 07 33 50.92 +61 08 23.8 q C97
2018-02-19 15:28:53 C 07 33 51.52 +61 08 30.9 q C97
2018-02-19 15:30:47 C 07 33 52.10 +61 08 37.7 q C97
2018-02-19 15:32:40 C 07 33 52.75 +61 08 45.6 q C97
2018-02-21 19:37:31 C 07 52 04.73 +63 47 46.4 U K74
2018-02-21 19:40:35 C 07 52 05.75 +63 47 54.3 U K74
2018-02-21 20:11:26 n 07 52 16.58 +63 49 12.0 16.5 U Z43
2018-02-21 20:41:35 n 07 52 25.97 +63 50 29.5 16.0 U Z43
2018-02-21 21:11:53 n 07 52 35.47 +63 51 46.1 16.5 U Z43
2018-02-21 21:42:02 n 07 52 44.81 +63 53 01.5 16.0 U Z43
2018-02-22 18:23:30 C 07 59 36.74 +64 40 36.2 16.6 r 238
2018-02-22 18:29:26 C 07 59 38.63 +64 40 49.7 16.6 r 238
2018-02-22 18:35:20 C 07 59 40.52 +64 41 03.2 16.8 r 238
2018-02-23 10:48:16 C 08 04 42.22 +65 13 51.9 o 291
2018-02-23 10:51:30 C 08 04 43.23 +65 13 57.6 o 291
2018-02-23 10:54:46 C 08 04 44.25 +65 14 03.2 o 291
2018-02-25 04:00:42 C 08 17 25.23 +66 22 57.1 U 703
2018-02-25 04:08:30 C 08 17 27.31 +66 23 08.8 U 703
2018-02-25 04:16:20 C 08 17 29.40 +66 23 20.3 U 703
2018-02-25 04:24:12 C 08 17 31.50 +66 23 31.8 U 703
2018-02-25 21:30:03 n 08 22 27.89 +66 46 24.9 17.5 U Z43
2018-02-25 22:00:19 n 08 22 35.91 +66 47 04.1 17.2 U Z43
2018-02-26 22:28:31 C 08 29 24.57 +67 15 23.1 U Z80
2018-02-26 22:32:42 C 08 29 25.44 +67 15 27.0 U Z80
2018-02-26 22:36:54 C 08 29 26.49 +67 15 31.5 U Z80
2018-02-26 22:41:05 C 08 29 27.65 +67 15 36.1 U Z80
2018-02-26 22:45:16 C 08 29 28.70 +67 15 40.6 U Z80
2018-03-08 01:21:25 C 09 18 38.55 +68 59 44.0 U W34
2018-03-08 01:35:10 C 09 18 40.79 +68 59 45.5 U W34
2018-03-08 01:52:27 C 09 18 43.53 +68 59 47.3 U W34
2018-03-14 13:16:34 C 09 43 45.14 +68 44 58.9 q D29
2018-03-14 13:36:25 C 09 43 47.59 +68 44 54.3 q D29
Radar Observations (6)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2018-02-05 04:30:00 60957133 1 us 8560 -14 -14
2018-02-05 05:20:00 466941.9 2 Hz 8560 -14 -14
2018-02-06 01:50:00 57236485.342 2 us 8560 -14 -14
2018-02-07 05:30:00 54341231 1 us 8560 -14 -14
2018-02-08 04:40:00 53845832.89 2.5 us 8560 -14 -14
2018-02-09 00:16:00 54853140.46 1 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)