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
2017-07-31 23:10:13 C 21 17 26.20 -03 00 04.1 U Z80
2017-08-02 11:10:03 C 21 14 59.31 -04 19 41.7 L T08
2017-08-02 11:15:46 C 21 14 58.89 -04 19 55.0 L T08
2017-08-02 11:23:13 C 21 14 58.33 -04 20 11.2 L T08
2017-08-02 11:28:54 C 21 14 57.91 -04 20 24.3 L T08
2017-08-02 11:35:31 C 21 14 57.39 -04 20 39.9 L T08
2017-08-02 11:41:22 C 21 14 56.94 -04 20 53.7 L T08
2017-08-02 11:49:03 C 21 14 56.36 -04 21 11.0 L T08
2017-08-02 11:54:58 C 21 14 55.92 -04 21 24.4 L T08
2017-08-02 22:59:27 C 21 14 09.68 -04 46 56.3 q 160
2017-08-02 23:03:08 C 21 14 09.39 -04 47 04.9 q 160
2017-08-02 23:06:49 C 21 14 09.11 -04 47 13.4 q 160
2017-08-03 01:00:13 C 21 14 00.63 -04 51 36.1 U 204
2017-08-03 01:03:12 C 21 14 00.40 -04 51 43.0 U 204
2017-08-03 01:06:15 C 21 14 00.19 -04 51 50.1 U 204
2017-08-03 01:09:18 C 21 13 59.94 -04 51 57.1 U 204
2017-08-03 01:12:20 C 21 13 59.72 -04 52 04.2 U 204
2017-08-04 11:27:06 C 21 11 29.91 -06 13 14.1 L T05
2017-08-04 11:41:35 C 21 11 28.76 -06 13 48.8 L T05
2017-08-04 11:55:03 C 21 11 27.67 -06 14 21.3 L T05
2017-08-04 12:09:05 C 21 11 26.54 -06 14 55.6 L T05
2017-08-11 11:08:17 C 20 57 37.01 -13 39 44.1 L T08
2017-08-11 11:21:05 C 20 57 35.78 -13 40 21.4 L T08
2017-08-11 11:33:48 C 20 57 34.54 -13 40 57.0 L T08
2017-08-11 11:46:33 C 20 57 33.31 -13 41 33.5 L T08
2017-08-13 23:25:22 C 20 52 02.27 -16 36 04.5 U 107
2017-08-13 23:29:04 C 20 52 01.91 -16 36 15.2 U 107
2017-08-13 23:33:02 C 20 52 01.50 -16 36 27.5 U 107
2017-08-13 23:35:52 C 20 52 01.22 -16 36 35.7 U 107
2017-08-14 10:12:40 C 20 51 00.69 -17 08 06.0 L T08
2017-08-14 10:25:23 C 20 50 59.40 -17 08 44.2 L T08
2017-08-14 10:38:04 C 20 50 58.10 -17 09 21.9 L T08
2017-08-14 10:50:45 C 20 50 56.78 -17 09 59.5 L T08
2017-08-16 09:57:13 C 20 46 22.81 -19 31 53.5 L T05
2017-08-16 10:05:38 C 20 46 21.93 -19 32 19.1 L T05
2017-08-16 10:09:12 C 20 46 21.55 -19 32 29.5 L T05
2017-08-16 10:17:37 C 20 46 20.66 -19 32 55.2 L T05
2017-08-16 10:21:08 C 20 46 20.29 -19 33 05.8 L T05
2017-08-16 10:33:06 C 20 46 19.04 -19 33 42.1 L T05
2017-08-16 10:41:35 C 20 46 18.13 -19 34 07.6 L T05
2017-08-18 10:10:27 C 20 41 34.48 -21 58 42.4 L T08
2017-08-18 10:23:07 C 20 41 33.11 -21 59 20.6 L T08
2017-08-18 10:35:55 C 20 41 31.74 -21 59 59.3 L T08
2017-08-22 09:34:16 C 20 31 50.58 -26 48 31.6 L T08
2017-08-22 09:47:05 C 20 31 49.17 -26 49 09.6 L T08
2017-08-22 09:59:50 C 20 31 47.77 -26 49 48.1 L T08
2017-08-22 10:12:32 C 20 31 46.43 -26 50 25.5 L T08
2017-08-26 09:34:31 C 20 21 59.43 -31 30 47.4 L T08
2017-08-26 09:47:32 C 20 21 58.04 -31 31 24.8 L T08
2017-08-26 09:59:47 C 20 21 56.70 -31 31 59.3 L T08
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)