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
2017-08-26 10:12:44 C 20 21 55.31 -31 32 36.3 L T08
2017-09-08 05:55:14 C 19 53 33.903 -44 16 18.80 L F51
2017-09-08 06:08:06 C 19 53 32.800 -44 16 45.69 L F51
2017-09-08 06:20:57 C 19 53 31.690 -44 17 12.49 L F51
2017-09-08 06:33:47 C 19 53 30.585 -44 17 39.10 L F51
2017-09-20 13:11:04 S 19 36 20.664 -52 41 45.74 L C51
2017-09-20 16:19:34 S 19 36 13.846 -52 46 09.16 L C51
2017-09-20 16:19:45 S 19 36 13.90 -52 46 09.3 L C51
2017-09-20 19:28:16 S 19 36 07.13 -52 50 31.1 L C51
2017-09-20 21:02:31 S 19 36 03.84 -52 52 42.9 L C51
2017-09-21 00:11:01 S 19 35 57.286 -52 57 03.42 L C51
2017-09-21 06:28:01 S 19 35 44.34 -53 05 41.8 L C51
2017-09-21 09:36:31 S 19 35 38.02 -53 09 59.3 L C51
2018-02-02 01:09:37 C 04 35 05.28 -47 30 35.6 q X31
2018-02-02 01:19:21 C 04 35 08.97 -47 28 45.3 q X31
2018-02-02 01:29:04 C 04 35 12.69 -47 26 54.6 q X31
2018-02-04 02:40:24 C 04 56 01.87 -36 01 42.0 U W88
2018-02-04 02:50:58 C 04 56 06.02 -35 58 41.8 U W88
2018-02-04 03:41:06 C 04 56 26.06 -35 44 20.2 U W88
2018-02-04 03:50:22 C 04 56 29.82 -35 41 40.2 U W88
2018-02-04 07:01:35 S 04 57 59.074 -34 46 45.44 L C51
2018-02-04 10:10:16 S 04 59 20.594 -33 50 59.17 L C51
2018-02-06 02:45:29 C 05 17 04.78 -19 49 24.0 U I52
2018-02-06 02:45:40 C 05 17 04.86 -19 49 19.9 U I52
2018-02-06 02:47:06 C 05 17 05.43 -19 48 46.1 U I52
2018-02-06 02:47:17 C 05 17 05.51 -19 48 41.8 U I52
2018-02-06 16:02:32 C 05 22 55.09 -14 26 20.1 q C97
2018-02-06 16:03:37 C 05 22 55.54 -14 25 52.0 q C97
2018-02-06 16:04:41 C 05 22 55.97 -14 25 24.1 q C97
2018-02-06 16:05:47 C 05 22 56.38 -14 24 59.2 q C97
2018-02-06 16:06:52 C 05 22 56.85 -14 24 31.2 q C97
2018-02-06 16:07:57 C 05 22 57.32 -14 24 03.0 q C97
2018-02-06 16:10:07 C 05 22 58.12 -14 23 08.9 q C97
2018-02-08 02:40:56 C 05 38 18.39 +00 38 59.8 U I52
2018-02-08 02:41:08 C 05 38 18.47 +00 39 04.5 U I52
2018-02-08 02:41:19 C 05 38 18.54 +00 39 09.4 U I52
2018-02-08 02:41:29 C 05 38 18.61 +00 39 14.3 U I52
2018-02-08 03:32:32 C 05 38 39.04 +01 01 56.2 q V16
2018-02-08 03:40:33 C 05 38 42.55 +01 05 27.0 U I52
2018-02-08 03:40:44 C 05 38 42.62 +01 05 31.7 U I52
2018-02-08 03:42:43 C 05 38 43.43 +01 06 24.8 U I52
2018-02-08 03:42:53 C 05 38 43.50 +01 06 29.6 U I52
2018-02-08 04:00:14 C 05 38 50.52 +01 14 11.3 U I52
2018-02-08 04:01:19 C 05 38 50.96 +01 14 40.0 U I52
2018-02-08 04:02:24 C 05 38 51.40 +01 15 08.9 U I52
2018-02-08 04:16:38 C 05 38 56.82 +01 21 29.5 q V16
2018-02-08 04:16:43 C 05 38 56.90 +01 21 31.6 q V16
2018-02-08 04:53:49 C 05 39 11.93 +01 37 58.9 q V16
2018-02-08 05:39:10 C 05 39 30.44 +01 58 05.0 q V16
2018-02-08 05:39:15 C 05 39 30.47 +01 58 07.6 q V16
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)