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 21:44:12 S 22 55 56.554 -35 06 47.23 V C57
2020-08-21 21:44:12 s 1 -170497.16 8 +318279.90 5970.0 C57
2020-08-21 21:54:12 S 22 55 56.378 -35 07 29.89 V C57
2020-08-21 21:54:12 s 1 -170738.30 5 +317911.64 2470.0 C57
2020-08-21 22:04:12 S 22 55 56.453 -35 08 20.54 V C57
2020-08-21 22:04:12 s 1 -170978.92 1 +317542.41 8770.0 C57
2020-08-21 22:14:12 S 22 55 56.424 -35 08 56.76 V C57
2020-08-21 22:14:12 s 1 -171219.01 4 +317172.20 4840.0 C57
2020-08-21 22:24:12 S 22 55 56.292 -35 09 36.86 V C57
2020-08-21 22:24:12 s 1 -171458.58 2 +316801.02 700.0 C57
2020-08-21 22:34:12 S 22 55 56.438 -35 10 20.06 V C57
2020-08-21 22:34:12 s 1 -171697.62 4 +316428.85 6350.0 C57
2020-08-21 22:44:12 S 22 55 56.386 -35 10 58.33 V C57
2020-08-21 22:44:12 s 1 -171936.13 8 +316055.71 1780.0 C57
2020-08-21 22:54:12 S 22 55 56.210 -35 11 43.22 V C57
2020-08-21 22:54:12 s 1 -172174.12 1 +315681.59 7000.0 C57
2020-08-21 23:04:12 S 22 55 56.230 -35 12 22.43 V C57
2020-08-21 23:04:12 s 1 -172411.57 4 +315306.50 2000.0 C57
2020-08-21 23:14:12 S 22 55 56.414 -35 13 09.66 V C57
2020-08-21 23:14:12 s 1 -172648.49 3 +314930.42 6780.0 C57
2020-08-21 23:24:12 S 22 55 56.422 -35 13 46.70 V C57
2020-08-21 23:24:12 s 1 -172884.87 7 +314553.36 1340.0 C57
2020-08-21 23:34:12 S 22 55 56.405 -35 14 29.90 V C57
2020-08-21 23:34:12 s 1 -173120.72 4 +314175.32 5680.0 C57
2020-08-21 23:44:12 S 22 55 56.342 -35 15 15.95 V C57
2020-08-21 23:44:12 s 1 -173356.03 4 +313796.30 9800.0 C57
2020-08-21 23:54:12 S 22 55 56.448 -35 16 01.74 V C57
2020-08-21 23:54:12 s 1 -173590.80 3 +313416.30 3700.0 C57
2020-08-22 00:14:12 S 22 55 56.424 -35 17 23.96 V C57
2020-08-22 00:14:12 s 1 -174058.71 4 +312653.35 840.0 C57
2020-08-22 00:24:12 S 22 55 56.347 -35 18 03.92 V C57
2020-08-22 00:24:12 s 1 -174291.85 3 +312270.40 4080.0 C57
2020-08-22 00:34:12 S 22 55 56.218 -35 18 43.49 V C57
2020-08-22 00:34:12 s 1 -174524.44 4 +311886.46 7100.0 C57
2020-08-22 00:44:12 S 22 55 56.275 -35 19 27.95 V C57
2020-08-22 00:44:12 s 1 -174756.48 7 +311501.54 9890.0 C57
2020-08-22 01:04:12 S 22 55 56.376 -35 20 55.79 V C57
2020-08-22 01:04:12 s 1 -175218.92 0 +310728.75 4790.0 C57
2020-08-22 01:14:12 S 22 55 56.299 -35 21 34.70 V C57
2020-08-22 01:14:12 s 1 -175449.30 6 +310340.87 6900.0 C57
2020-08-22 01:24:12 S 22 55 56.518 -35 22 19.52 V C57
2020-08-22 01:24:12 s 1 -175679.13 6 +309952.00 8790.0 C57
2020-08-22 01:34:12 S 22 55 56.554 -35 22 58.01 V C57
2020-08-22 01:34:12 s 1 -175908.40 9 +309562.15 450.0 C57
2020-08-22 01:44:12 S 22 55 56.518 -35 23 39.62 V C57
2020-08-22 01:44:12 s 1 -176137.12 2 +309171.31 1880.0 C57
2020-08-22 01:54:12 S 22 55 56.486 -35 24 24.73 V C57
2020-08-22 01:54:12 s 1 -176365.27 4 +308779.48 3090.0 C57
2020-08-22 02:04:12 S 22 55 56.530 -35 25 09.34 V C57
2020-08-22 02:04:12 s 1 -176592.86 3 +308386.66 4060.0 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)