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
2021-03-15 12:48:11 C 14 19 40.30 +58 58 20.3 V T05
2021-03-15 12:52:48 C 14 19 39.96 +58 58 24.9 V T05
2021-03-15 13:10:03 C 14 19 38.37 +58 58 42.1 V T05
2021-03-17 09:04:19 C 14 16 18.81 +59 39 20.7 V 703
2021-03-17 09:12:03 C 14 16 18.18 +59 39 27.2 V 703
2021-03-17 09:23:44 C 14 16 16.93 +59 39 38.2 V 703
2021-03-17 09:31:30 C 14 16 16.35 +59 39 44.4 V 703
2021-03-17 15:22:29 C 14 15 46.94 +59 44 45.2 V T08
2021-03-17 15:27:17 C 14 15 46.58 +59 44 49.0 V T08
2021-03-17 15:32:05 C 14 15 46.15 +59 44 52.8 V T08
2021-03-17 15:36:38 C 14 15 45.74 +59 44 56.3 V T08
2021-03-17 15:41:17 C 14 15 45.38 +59 45 00.7 V T08
2021-03-19 11:13:49 C 14 12 14.96 +60 19 18.6 V T05
2021-03-19 11:21:05 C 14 12 14.20 +60 19 24.1 V T05
2021-03-19 11:23:43 C 14 12 13.94 +60 19 26.3 V T05
2021-03-19 11:36:57 C 14 12 12.78 +60 19 36.1 V T05
2021-03-21 11:54:47 C 14 08 04.01 +60 51 44.8 V T08
2021-03-21 12:31:52 C 14 08 00.39 +60 52 08.0 V T08
2021-03-21 12:36:33 C 14 07 59.92 +60 52 10.7 V T08
2021-03-21 12:44:12 C 14 07 59.16 +60 52 15.2 V T08
2021-03-25 14:00:43 C 13 59 10.710 +61 39 27.36 U F51
2021-03-25 14:04:26 C 13 59 10.358 +61 39 28.74 U F51
2021-03-25 14:08:08 C 13 59 09.990 +61 39 29.82 U F51
2021-03-25 14:11:51 C 13 59 09.572 +61 39 31.17 U F51
2021-04-05 07:55:19 C 13 35 32.31 +62 08 44.0 V 703
2021-04-05 08:03:38 C 13 35 31.46 +62 08 44.8 V 703
2021-04-05 08:19:46 C 13 35 29.77 +62 08 42.4 V 703
2021-04-12 04:29:47 C 13 22 17.66 +61 27 53.1 U I41
2021-04-12 05:29:11 C 13 22 13.02 +61 27 32.9 U I41
2021-04-12 06:42:02 C 13 22 07.31 +61 27 07.6 U I41
2021-04-12 07:09:07 C 13 22 05.12 +61 26 57.8 U I41
2021-04-12 07:14:07 C 13 22 04.75 +61 26 55.9 U I41
2021-04-12 07:40:12 C 13 22 02.72 +61 26 46.5 U I41
2021-04-12 08:43:15 C 13 21 57.70 +61 26 22.6 U I41
2021-04-12 09:48:09 C 13 21 52.56 +61 25 57.5 U I41
2021-04-18 08:27:41 C 13 12 40.206 +60 20 16.28 U F51
2021-04-18 08:45:23 C 13 12 39.098 +60 20 06.99 U F51
2021-04-18 09:03:05 C 13 12 37.973 +60 19 57.48 U F51
2021-04-30 06:14:38 C 13 01 06.52 +57 08 25.3 V G96
2021-04-30 06:15:22 C 13 01 06.48 +57 08 25.2 V G96
2021-04-30 06:22:14 C 13 01 06.27 +57 08 19.8 V G96
2021-04-30 06:22:59 C 13 01 06.27 +57 08 19.1 V G96
2021-04-30 06:29:50 C 13 01 06.06 +57 08 13.6 V G96
2021-04-30 06:30:35 C 13 01 06.01 +57 08 13.3 V G96
2021-04-30 06:37:27 C 13 01 05.83 +57 08 07.8 V G96
2021-04-30 06:38:11 C 13 01 05.79 +57 08 07.0 V G96
2021-05-13 04:50:19 C 12 57 52.75 +52 39 00.0 V G96
2021-05-13 04:57:50 C 12 57 52.74 +52 38 52.9 V G96
2021-05-13 05:05:21 C 12 57 52.77 +52 38 46.0 V G96
2021-05-13 05:12:52 C 12 57 52.73 +52 38 38.8 V G96
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)