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
2017-06-23 12:24:08 C 21 36 49.722 +11 46 50.60 L F51
2017-06-29 08:55:42 C 21 38 21.36 +11 12 48.7 q G96
2017-06-29 09:01:49 C 21 38 21.39 +11 12 46.7 q G96
2017-06-29 09:07:56 C 21 38 21.41 +11 12 44.8 q G96
2017-06-29 09:14:02 C 21 38 21.43 +11 12 42.9 q G96
2017-07-17 21:18:50 C 21 33 37.28 +06 09 28.1 q 151
2017-07-17 21:21:04 C 21 33 37.20 +06 09 25.4 q 151
2017-07-17 21:23:18 C 21 33 37.13 +06 09 22.8 q 151
2017-07-17 21:25:35 C 21 33 37.05 +06 09 20.4 q 151
2017-07-17 21:27:50 C 21 33 36.97 +06 09 17.8 q 151
2017-07-17 21:30:05 C 21 33 36.90 +06 09 15.3 q 151
2017-07-17 21:32:22 C 21 33 36.83 +06 09 12.9 q 151
2017-07-19 17:32:46 C 21 32 10.63 +05 16 38.8 q D29
2017-07-19 17:53:07 C 21 32 09.83 +05 16 12.9 q D29
2017-07-19 18:13:29 C 21 32 09.05 +05 15 47.8 q D29
2017-07-23 08:31:38 C 21 28 45.76 +03 16 58.5 q H45
2017-07-23 08:33:27 C 21 28 45.68 +03 16 55.9 q H45
2017-07-23 08:34:44 C 21 28 45.62 +03 16 54.1 q H45
2017-07-23 08:36:13 C 21 28 45.55 +03 16 51.8 q H45
2017-07-23 08:37:50 C 21 28 45.47 +03 16 49.4 q H45
2017-07-23 08:39:29 C 21 28 45.40 +03 16 46.9 q H45
2017-07-25 08:20:41 C 21 26 32.84 +02 01 45.4 q H45
2017-07-25 08:22:17 C 21 26 32.76 +02 01 42.8 q H45
2017-07-25 08:23:55 C 21 26 32.66 +02 01 39.9 q H45
2017-07-25 08:25:28 C 21 26 32.58 +02 01 37.2 q H45
2017-07-25 08:27:50 C 21 26 32.46 +02 01 33.3 q H45
2017-07-25 08:29:15 C 21 26 32.39 +02 01 31.2 q H45
2017-07-26 17:00:17 C 21 24 53.90 +01 06 19.4 q D29
2017-07-26 17:25:44 C 21 24 52.45 +01 05 35.0 q D29
2017-07-26 17:51:12 C 21 24 51.01 +01 04 50.7 q D29
2017-07-27 08:18:13 C 21 24 04.72 +00 39 11.0 q H45
2017-07-27 08:19:41 C 21 24 04.65 +00 39 08.7 q H45
2017-07-27 08:21:13 C 21 24 04.56 +00 39 05.7 q H45
2017-07-27 08:22:47 C 21 24 04.46 +00 39 03.1 q H45
2017-07-27 08:24:20 C 21 24 04.36 +00 39 00.2 q H45
2017-07-27 08:25:48 C 21 24 04.29 +00 38 57.5 q H45
2017-07-30 08:50:10 C 21 19 52.34 -01 39 41.1 q H45
2017-07-30 08:51:29 C 21 19 52.23 -01 39 43.7 q H45
2017-07-30 08:52:46 C 21 19 52.16 -01 39 46.5 q H45
2017-07-30 08:54:15 C 21 19 52.07 -01 39 49.4 q H45
2017-07-30 08:55:42 C 21 19 51.96 -01 39 52.4 q H45
2017-07-30 08:57:02 C 21 19 51.88 -01 39 54.9 q H45
2017-07-30 22:49:32 C 21 19 00.60 -02 08 28.7 q 160
2017-07-30 22:53:28 C 21 19 00.32 -02 08 36.7 q 160
2017-07-30 22:56:53 C 21 19 00.08 -02 08 43.7 q 160
2017-07-31 01:33:27 C 21 18 49.75 -02 14 09.1 q J27
2017-07-31 01:37:44 C 21 18 49.46 -02 14 18.2 q J27
2017-07-31 01:41:34 C 21 18 49.17 -02 14 26.0 q J27
2017-07-31 22:56:15 C 21 17 27.19 -02 59 33.8 U Z80
2017-07-31 23:03:14 C 21 17 26.67 -02 59 49.8 U Z80
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)