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
2021-01-30 12:58:39 C 14 03 25.26 -04 49 19.3 V T08
2021-01-30 13:14:35 C 14 03 26.73 -04 47 34.6 V T08
2021-02-01 12:44:56 C 14 07 57.87 +00 26 33.1 V T05
2021-02-01 12:50:13 C 14 07 58.33 +00 27 08.2 V T05
2021-02-01 12:55:30 C 14 07 58.75 +00 27 43.2 V T05
2021-02-01 13:01:30 C 14 07 59.26 +00 28 22.7 V T05
2021-02-01 13:08:52 C 14 07 59.85 +00 29 10.6 V T05
2021-02-01 13:10:12 C 14 07 59.96 +00 29 19.3 V T05
2021-02-01 13:17:28 C 14 08 00.56 +00 30 07.8 V T05
2021-02-05 10:16:53 C 14 16 01.64 +10 28 47.2 V 703
2021-02-05 10:24:37 C 14 16 02.20 +10 29 35.7 V 703
2021-02-05 10:32:22 C 14 16 02.74 +10 30 24.0 V 703
2021-02-05 10:40:07 C 14 16 03.28 +10 31 12.5 V 703
2021-02-06 11:29:44 C 14 17 59.56 +13 04 12.2 V 703
2021-02-06 11:37:21 C 14 18 00.03 +13 04 59.8 V 703
2021-02-06 11:44:58 C 14 18 00.58 +13 05 45.6 V 703
2021-02-06 11:52:35 C 14 18 01.04 +13 06 30.5 V 703
2021-02-06 15:06:48 C 14 18 15.72 +13 26 18.8 V T05
2021-02-06 15:10:53 C 14 18 15.98 +13 26 43.7 V T05
2021-02-06 15:34:36 C 14 18 17.51 +13 29 07.5 V T05
2021-02-06 15:46:20 C 14 18 18.24 +13 30 18.7 V T05
2021-02-06 16:05:48 C 14 18 19.49 +13 32 16.5 V T05
2021-02-08 13:37:45 C 14 21 39.67 +18 01 05.7 V T08
2021-02-08 13:46:43 C 14 21 40.19 +18 01 57.3 V T08
2021-02-08 13:50:43 C 14 21 40.43 +18 02 20.5 V T08
2021-02-08 14:00:41 C 14 21 41.00 +18 03 17.9 V T08
2021-02-09 10:25:20 C 14 23 04.18 +19 58 43.9 V 703
2021-02-09 10:32:52 C 14 23 04.59 +19 59 26.3 V 703
2021-02-09 10:40:24 C 14 23 05.01 +20 00 08.4 V 703
2021-02-09 10:47:56 C 14 23 05.44 +20 00 50.6 V 703
2021-02-10 13:12:57 C 14 24 47.48 +22 25 43.7 V T05
2021-02-10 13:17:01 C 14 24 47.71 +22 26 05.7 V T05
2021-02-10 13:21:38 C 14 24 47.95 +22 26 30.6 V T05
2021-02-10 13:31:42 C 14 24 48.47 +22 27 25.1 V T05
2021-02-12 14:17:47 C 14 27 38.05 +26 39 50.7 V T08
2021-02-12 14:20:26 C 14 27 38.17 +26 40 04.1 V T08
2021-02-12 14:24:25 C 14 27 38.34 +26 40 24.0 V T08
2021-02-12 15:01:33 C 14 27 39.90 +26 43 29.3 V T08
2021-02-16 12:26:40 C 14 32 01.78 +33 51 59.1 V T08
2021-02-16 12:48:09 C 14 32 02.41 +33 53 30.3 V T08
2021-02-16 12:52:09 C 14 32 02.51 +33 53 47.5 V T08
2021-02-16 13:05:14 C 14 32 02.89 +33 54 42.9 V T08
2021-02-17 12:37:25 C 14 32 54.65 +35 31 31.2 V T08
2021-02-17 12:40:05 C 14 32 54.72 +35 31 42.2 V T08
2021-02-17 12:46:45 C 14 32 54.86 +35 32 09.4 V T08
2021-02-17 12:55:22 C 14 32 55.08 +35 32 44.4 V T08
2021-02-20 09:40:23 C 14 34 52.22 +39 51 22.9 V 703
2021-02-20 09:48:10 C 14 34 52.32 +39 51 50.6 V 703
2021-02-20 09:55:57 C 14 34 52.40 +39 52 18.4 V 703
2021-02-20 10:03:44 C 14 34 52.52 +39 52 45.9 V 703
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)