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
2014-09-30 13:23:43 S 18 59 13.45 -41 26 12.0 L C51
2014-09-30 16:33:08 S 18 59 21.89 -41 29 24.3 L C51
2014-10-01 03:35:59 S 18 59 51.84 -41 40 39.0 L C51
2014-10-01 05:10:37 S 18 59 56.26 -41 42 14.4 L C51
2014-10-01 06:45:25 S 19 00 00.62 -41 43 50.4 L C51
2014-10-01 08:20:02 S 19 00 04.93 -41 45 26.0 L C51
2014-10-01 09:54:50 S 19 00 09.29 -41 47 01.7 L C51
2014-10-02 18:07:57 C 19 01 42.42 -42 19 04.6 q K91
2014-10-02 18:12:27 C 19 01 42.62 -42 19 09.0 q K91
2014-10-02 18:16:59 C 19 01 42.85 -42 19 13.2 q K91
2014-10-04 02:37:15 S 19 03 23.24 -42 50 30.3 L C51
2014-10-04 05:46:40 S 19 03 33.40 -42 53 31.1 L C51
2014-10-04 08:55:54 S 19 03 43.55 -42 56 32.1 L C51
2014-10-04 08:56:05 S 19 03 43.57 -42 56 32.2 L C51
2014-10-04 13:40:07 S 19 03 59.04 -43 01 01.4 L C51
2014-10-04 16:49:32 S 19 04 09.38 -43 04 00.9 L C51
2014-10-04 18:24:09 S 19 04 14.51 -43 05 30.1 L C51
2014-10-04 18:29:41 C 19 04 14.57 -43 05 37.5 q K93
2014-10-04 18:44:42 C 19 04 15.35 -43 05 50.9 q K93
2014-10-04 18:50:52 C 19 04 15.65 -43 05 57.1 q K93
2014-10-04 19:58:46 S 19 04 19.783 -43 06 57.67 L C51
2014-10-04 23:08:11 S 19 04 30.247 -43 09 57.20 L C51
2014-10-05 05:27:02 S 19 04 51.29 -43 15 53.1 L C51
2014-10-06 00:28:11 C 19 05 56.21 -43 33 34.2 c I11
2014-10-06 00:30:32 C 19 05 56.34 -43 33 36.5 c I11
2014-10-06 00:31:42 C 19 05 56.39 -43 33 37.5 c I11
2014-10-08 00:00:40 C 19 08 48.69 -44 16 33.3 u 807
2014-10-08 00:10:47 C 19 08 49.27 -44 16 42.0 u 807
2014-10-11 23:47:14 C 19 15 16.72 -45 38 19.4 u 807
2014-10-11 23:54:00 C 19 15 17.12 -45 38 25.2 u 807
2014-10-12 00:00:46 C 19 15 17.58 -45 38 30.6 u 807
2014-10-20 00:00:15 C 19 30 54.16 -48 04 22.7 u 807
2014-10-20 00:07:07 C 19 30 54.76 -48 04 27.2 u 807
2014-10-21 04:55:18 C 19 33 33.307 -48 24 30.90 t 568
2014-10-23 23:55:14 C 19 39 59.05 -49 08 51.8 u 807
2014-10-24 00:00:00 C 19 39 59.51 -49 08 55.0 u 807
2014-10-24 00:04:06 C 19 39 59.89 -49 08 57.6 u 807
2014-11-06 00:09:39 C 20 15 06.85 -52 02 33.5 u 807
2014-11-06 00:18:00 C 20 15 07.85 -52 02 37.1 u 807
2014-11-06 00:26:34 C 20 15 08.88 -52 02 40.8 u 807
2014-11-08 00:11:31 C 20 21 13.65 -52 24 23.0 u 807
2014-11-08 00:19:50 C 20 21 14.71 -52 24 26.5 u 807
2014-11-08 00:28:24 C 20 21 15.76 -52 24 30.3 u 807
2014-11-15 00:13:58 C 20 44 00.10 -53 29 50.6 u 807
2014-11-15 00:18:03 C 20 44 00.71 -53 29 52.5 u 807
2014-11-15 00:23:02 C 20 44 01.39 -53 29 54.4 u 807
2014-11-15 00:26:53 C 20 44 01.85 -53 29 55.5 u 807
2014-11-15 00:32:04 C 20 44 02.58 -53 29 57.1 u 807
2014-11-16 00:15:03 C 20 47 25.70 -53 37 47.0 u 807
2014-11-16 00:19:50 C 20 47 26.34 -53 37 48.8 u 807
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)