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
2014-11-16 00:23:57 C 20 47 26.90 -53 37 50.0 u 807
2014-11-16 00:33:32 C 20 47 28.25 -53 37 53.2 u 807
2014-11-16 09:21:10 C 20 48 44.17 -53 40 37.3 t 474
2014-11-16 09:24:13 C 20 48 44.61 -53 40 38.5 t 474
2014-11-16 09:27:45 C 20 48 45.08 -53 40 39.4 t 474
2014-11-26 00:23:53 C 21 23 51.80 -54 35 41.5 u 807
2014-11-26 00:27:45 C 21 23 52.39 -54 35 42.1 u 807
2014-12-06 00:38:37 C 22 03 42.16 -54 50 37.5 u 807
2014-12-06 00:47:19 C 22 03 43.54 -54 50 36.8 u 807
2014-12-06 00:55:45 C 22 03 44.96 -54 50 36.2 u 807
2014-12-16 00:41:59 C 22 45 51.53 -54 13 07.1 u 807
2014-12-16 00:46:47 C 22 45 52.35 -54 13 06.3 u 807
2014-12-16 00:51:23 C 22 45 53.12 -54 13 04.9 u 807
2014-12-16 00:56:26 C 22 45 54.02 -54 13 02.8 u 807
2014-12-16 01:00:33 C 22 45 54.79 -54 13 01.8 u 807
2014-12-24 00:46:22 C 23 20 35.73 -52 55 56.6 u 807
2014-12-24 00:51:08 C 23 20 36.54 -52 55 53.8 u 807
2014-12-24 00:55:41 C 23 20 37.34 -52 55 51.1 u 807
2014-12-24 01:00:12 C 23 20 38.13 -52 55 48.7 u 807
2014-12-24 01:04:43 C 23 20 38.94 -52 55 46.5 u 807
2015-01-01 00:51:07 C 23 55 41.23 -50 45 46.6 u 807
2015-01-01 00:55:26 C 23 55 41.94 -50 45 43.1 u 807
2015-01-01 00:58:51 C 23 55 42.55 -50 45 39.8 u 807
2015-01-01 01:02:44 C 23 55 43.33 -50 45 36.1 u 807
2015-01-09 01:22:51 C 00 30 47.98 -47 25 45.4 u 807
2015-01-09 01:29:47 C 00 30 49.21 -47 25 36.2 u 807
2015-01-09 01:36:46 C 00 30 50.40 -47 25 27.2 u 807
2015-01-12 00:49:40 C 00 43 47.15 -45 48 53.5 u 807
2015-01-12 00:54:53 C 00 43 48.06 -45 48 46.1 u 807
2015-01-12 01:00:20 C 00 43 48.99 -45 48 37.3 u 807
2015-01-28 00:44:53 C 01 53 48.65 -31 53 31.6 u 807
2015-01-28 00:51:45 C 01 53 49.87 -31 53 10.3 u 807
2015-01-28 00:58:36 C 01 53 51.10 -31 52 48.7 u 807
2015-02-06 00:38:48 C 02 34 29.28 -18 23 47.3 u 807
2015-02-06 00:47:30 C 02 34 30.87 -18 23 08.9 u 807
2015-02-06 00:56:36 C 02 34 32.57 -18 22 28.0 u 807
2015-02-18 04:24:57 C 03 33 27.44 +06 49 03.6 q 703
2015-02-18 04:50:35 C 03 33 32.92 +06 51 27.2 q 703
2015-02-20 00:16:20 C 03 42 54.78 +10 52 16.3 q I15
2015-02-20 00:28:42 C 03 42 57.37 +10 53 24.5 q I15
2015-02-20 00:33:27 C 03 42 58.41 +10 53 50.4 q I15
2015-02-24 01:02:36 C 04 04 22.78 +19 30 17.6 q H21
2015-02-24 01:05:10 C 04 04 23.35 +19 30 30.8 q H21
2015-02-24 01:07:45 C 04 04 23.93 +19 30 43.8 q H21
2015-02-24 01:10:11 C 04 04 24.46 +19 30 56.4 q H21
2015-02-24 01:15:55 C 04 04 25.73 +19 31 25.7 q H21
2015-03-11 02:56:42 C 05 31 47.57 +43 10 28.4 q 448
2015-03-11 03:10:01 C 05 31 50.84 +43 11 03.7 q 448
2015-03-11 03:18:47 C 05 31 53.01 +43 11 26.4 q 448
2015-03-16 01:53:07 C 06 02 10.05 +47 41 08.7 q H45
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)