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 03:34:12 S 22 55 57.485 -33 50 31.09 V C57
2020-08-21 03:34:12 s 1 -141421.68 6 +352677.14 8860.0 C57
2020-08-21 03:54:12 S 22 55 57.689 -33 51 57.35 V C57
2020-08-21 03:54:12 s 1 -141999.68 3 +352146.91 1380.0 C57
2020-08-21 04:04:12 S 22 55 57.554 -33 52 41.45 V C57
2020-08-21 04:04:12 s 1 -142288.12 6 +351880.40 7410.0 C57
2020-08-21 04:14:12 S 22 55 57.638 -33 53 20.33 V C57
2020-08-21 04:14:12 s 1 -142576.19 5 +351612.95 3280.0 C57
2020-08-21 04:24:12 S 22 55 57.420 -33 54 00.72 V C57
2020-08-21 04:24:12 s 1 -142863.89 1 +351344.58 9000.0 C57
2020-08-21 04:34:12 S 22 55 57.626 -33 54 44.89 V C57
2020-08-21 04:34:12 s 1 -143151.21 2 +351075.27 4560.0 C57
2020-08-21 04:54:12 S 22 55 57.331 -33 56 11.11 V C57
2020-08-21 04:54:12 s 1 -143724.72 5 +350533.86 5200.0 C57
2020-08-21 05:04:12 S 22 55 57.209 -33 56 53.16 V C57
2020-08-21 05:04:12 s 1 -144010.91 4 +350261.76 290.0 C57
2020-08-21 05:14:12 S 22 55 57.586 -33 57 35.50 V C57
2020-08-21 05:14:12 s 1 -144296.72 4 +349988.72 5220.0 C57
2020-08-21 05:24:12 S 22 55 57.269 -33 58 15.13 V C57
2020-08-21 05:24:12 s 1 -144582.15 2 +349714.75 9990.0 C57
2020-08-21 05:34:12 S 22 55 57.242 -33 58 54.30 V C57
2020-08-21 05:34:12 s 1 -144867.19 9 +349439.85 4590.0 C57
2020-08-21 05:44:12 S 22 55 57.530 -33 59 39.95 V C57
2020-08-21 05:44:12 s 1 -145151.86 2 +349164.01 9040.0 C57
2020-08-21 05:54:12 S 22 55 57.317 -34 00 23.36 V C57
2020-08-21 05:54:12 s 1 -145436.14 1 +348887.24 3330.0 C57
2020-08-21 06:04:12 S 22 55 57.125 -34 01 03.43 V C57
2020-08-21 06:04:12 s 1 -145720.03 4 +348609.54 7460.0 C57
2020-08-21 06:14:12 S 22 55 57.410 -34 01 44.36 V C57
2020-08-21 06:14:12 s 1 -146003.54 0 +348330.90 1430.0 C57
2020-08-21 06:24:12 S 22 55 57.077 -34 02 20.87 V C57
2020-08-21 06:24:12 s 1 -146286.65 8 +348051.32 5230.0 C57
2020-08-21 06:34:12 S 22 55 57.317 -34 03 09.22 V C57
2020-08-21 06:34:12 s 1 -146569.38 7 +347770.81 8870.0 C57
2020-08-21 06:44:12 S 22 55 57.240 -34 03 48.96 V C57
2020-08-21 06:44:12 s 1 -146851.72 5 +347489.36 2350.0 C57
2020-08-21 06:54:12 S 22 55 57.242 -34 04 32.77 V C57
2020-08-21 06:54:12 s 1 -147133.67 1 +347206.98 5670.0 C57
2020-08-21 07:14:12 S 22 55 57.355 -34 05 55.61 V C57
2020-08-21 07:14:12 s 1 -147696.38 2 +346639.41 1810.0 C57
2020-08-21 07:24:12 S 22 55 57.122 -34 06 39.31 V C57
2020-08-21 07:24:12 s 1 -147977.14 5 +346354.21 4640.0 C57
2020-08-21 07:34:12 S 22 55 57.048 -34 07 21.58 V C57
2020-08-21 07:34:12 s 1 -148257.51 2 +346068.08 7300.0 C57
2020-08-21 07:44:12 S 22 55 57.000 -34 08 00.67 V C57
2020-08-21 07:44:12 s 1 -148537.48 0 +345781.01 9790.0 C57
2020-08-21 07:54:12 S 22 55 57.370 -34 08 43.04 V C57
2020-08-21 07:54:12 s 1 -148817.04 9 +345493.01 2120.0 C57
2020-08-21 08:04:12 S 22 55 57.130 -34 09 24.70 V C57
2020-08-21 08:04:12 s 1 -149096.21 8 +345204.06 4280.0 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)