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
2020-08-21 08:14:12 S 22 55 57.118 -34 10 03.58 V C57
2020-08-21 08:14:12 s 1 -149374.98 4 +344914.18 6280.0 C57
2020-08-21 08:24:12 S 22 55 57.214 -34 10 48.94 V C57
2020-08-21 08:24:12 s 1 -149653.34 8 +344623.36 8100.0 C57
2020-08-21 08:34:12 S 22 55 57.324 -34 11 30.23 V C57
2020-08-21 08:34:12 s 1 -149931.30 7 +344331.59 9760.0 C57
2020-08-21 08:44:12 S 22 55 56.779 -34 12 11.77 V C57
2020-08-21 08:44:12 s 1 -150208.86 0 +344038.89 1250.0 C57
2020-08-21 08:54:12 S 22 55 57.074 -34 12 53.17 V C57
2020-08-21 08:54:12 s 1 -150486.00 7 +343745.25 2580.0 C57
2020-08-21 09:04:12 S 22 55 56.909 -34 13 36.95 V C57
2020-08-21 09:04:12 s 1 -150762.74 6 +343450.67 3730.0 C57
2020-08-21 09:14:12 S 22 55 56.856 -34 14 16.44 V C57
2020-08-21 09:14:12 s 1 -151039.07 5 +343155.14 4710.0 C57
2020-08-21 09:24:12 S 22 55 57.005 -34 14 58.99 V C57
2020-08-21 09:24:12 s 1 -151314.99 3 +342858.68 5520.0 C57
2020-08-21 09:44:12 S 22 55 57.098 -34 16 19.38 V C57
2020-08-21 09:44:12 s 1 -151865.59 2 +342262.93 6640.0 C57
2020-08-21 09:54:12 S 22 55 56.966 -34 17 05.71 V C57
2020-08-21 09:54:12 s 1 -152140.27 1 +341963.64 6930.0 C57
2020-08-21 10:14:12 S 22 55 56.842 -34 18 28.66 V C57
2020-08-21 10:14:12 s 1 -152688.37 9 +341362.23 7010.0 C57
2020-08-21 10:34:12 S 22 55 56.753 -34 19 50.45 V C57
2020-08-21 10:34:12 s 1 -153234.81 2 +340757.04 6400.0 C57
2020-08-21 10:44:12 S 22 55 56.950 -34 20 36.82 V C57
2020-08-21 10:44:12 s 1 -153507.39 8 +340453.04 5830.0 C57
2020-08-21 10:54:12 S 22 55 56.854 -34 21 18.18 V C57
2020-08-21 10:54:12 s 1 -153779.56 1 +340148.08 5090.0 C57
2020-08-21 11:04:12 S 22 55 56.794 -34 21 59.69 V C57
2020-08-21 11:04:12 s 1 -154051.30 1 +339842.19 4170.0 C57
2020-08-21 11:14:12 S 22 55 56.957 -34 22 39.32 V C57
2020-08-21 11:14:12 s 1 -154322.61 5 +339535.34 3070.0 C57
2020-08-21 11:24:12 S 22 55 56.959 -34 23 22.42 V C57
2020-08-21 11:24:12 s 1 -154593.50 3 +339227.56 1800.0 C57
2020-08-21 11:34:12 S 22 55 56.762 -34 24 07.52 V C57
2020-08-21 11:34:12 s 1 -154863.96 3 +338918.82 350.0 C57
2020-08-21 11:44:12 S 22 55 56.419 -34 24 46.55 V C57
2020-08-21 11:44:12 s 1 -155133.99 4 +338609.14 8730.0 C57
2020-08-21 11:54:12 S 22 55 56.707 -34 25 29.50 V C57
2020-08-21 11:54:12 s 1 -155403.59 5 +338298.51 6930.0 C57
2020-08-21 12:04:12 S 22 55 56.662 -34 26 09.42 V C57
2020-08-21 12:04:12 s 1 -155672.76 3 +337986.94 4940.0 C57
2020-08-21 12:14:12 S 22 55 56.892 -34 26 53.95 V C57
2020-08-21 12:14:12 s 1 -155941.49 9 +337674.42 2780.0 C57
2020-08-21 12:24:12 S 22 55 56.765 -34 27 31.54 V C57
2020-08-21 12:24:12 s 1 -156209.80 0 +337360.94 440.0 C57
2020-08-21 12:34:12 S 22 55 56.866 -34 28 13.37 V C57
2020-08-21 12:34:12 s 1 -156477.66 5 +337046.53 7920.0 C57
2020-08-21 12:44:12 S 22 55 56.621 -34 29 00.46 V C57
2020-08-21 12:44:12 s 1 -156745.09 2 +336731.16 5220.0 C57
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)