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
2020-08-19 22:24:12 S 22 56 04.188 -31 49 40.48 V C57
2020-08-19 22:24:12 s 1 -86078.972 0 +384833.25 2910.0 C57
2020-08-19 22:34:12 S 22 56 04.140 -31 50 20.33 V C57
2020-08-19 22:34:12 s 1 -86417.024 0 +384728.98 260.0 C57
2020-08-19 22:44:12 S 22 56 03.931 -31 51 02.99 V C57
2020-08-19 22:44:12 s 1 -86754.878 0 +384623.80 7520.0 C57
2020-08-19 22:54:12 S 22 56 03.845 -31 51 45.68 V C57
2020-08-19 22:54:12 s 1 -87092.532 0 +384517.70 4690.0 C57
2020-08-19 23:04:12 S 22 56 03.922 -31 52 23.84 V C57
2020-08-19 23:04:12 s 1 -87429.986 0 +384410.70 1770.0 C57
2020-08-19 23:14:12 S 22 56 04.061 -31 53 04.63 V C57
2020-08-19 23:14:12 s 1 -87767.240 0 +384302.77 8760.0 C57
2020-08-19 23:34:12 S 22 56 03.718 -31 54 31.18 V C57
2020-08-19 23:34:12 s 1 -88441.140 0 +384084.20 2480.0 C57
2020-08-19 23:44:12 S 22 56 03.734 -31 55 11.35 V C57
2020-08-19 23:44:12 s 1 -88777.786 0 +383973.54 9200.0 C57
2020-08-19 23:54:12 S 22 56 03.619 -31 55 53.04 V C57
2020-08-19 23:54:12 s 1 -89114.227 0 +383861.97 5830.0 C57
2020-08-20 00:04:12 S 22 56 03.523 -31 56 33.83 V C57
2020-08-20 00:04:12 s 1 -89450.462 0 +383749.48 2370.0 C57
2020-08-20 00:24:12 S 22 56 03.372 -31 57 55.40 V C57
2020-08-20 00:24:12 s 1 -90122.315 0 +383521.78 5180.0 C57
2020-08-20 00:54:12 S 22 56 03.362 -32 00 03.13 V C57
2020-08-20 00:54:12 s 1 -91128.532 0 +383173.38 3690.0 C57
2020-08-20 01:04:12 S 22 56 03.550 -32 00 40.75 V C57
2020-08-20 01:04:12 s 1 -91463.518 0 +383055.42 9680.0 C57
2020-08-20 01:24:12 S 22 56 03.322 -32 02 00.89 V C57
2020-08-20 01:24:12 s 1 -92132.855 0 +382816.77 1370.0 C57
2020-08-20 01:34:12 S 22 56 03.317 -32 02 53.05 V C57
2020-08-20 01:34:12 s 1 -92467.205 0 +382696.08 7070.0 C57
2020-08-20 01:54:12 S 22 56 03.379 -32 03 58.54 V C57
2020-08-20 01:54:12 s 1 -93135.261 0 +382451.96 8190.0 C57
2020-08-20 02:14:12 S 22 56 02.995 -32 05 28.79 V C57
2020-08-20 02:14:12 s 1 -93802.455 0 +382204.19 8930.0 C57
2020-08-20 02:24:12 S 22 56 03.024 -32 06 13.61 V C57
2020-08-20 02:24:12 s 1 -94135.726 0 +382078.94 4160.0 C57
2020-08-20 02:34:12 S 22 56 02.818 -32 06 50.40 V C57
2020-08-20 02:34:12 s 1 -94468.779 0 +381952.78 9290.0 C57
2020-08-20 02:54:12 S 22 56 02.664 -32 08 11.87 V C57
2020-08-20 02:54:12 s 1 -95134.226 0 +381697.71 9260.0 C57
2020-08-20 03:04:12 S 22 56 02.522 -32 08 53.70 V C57
2020-08-20 03:04:12 s 1 -95466.618 0 +381568.82 4090.0 C57
2020-08-20 03:14:12 S 22 56 02.525 -32 09 36.50 V C57
2020-08-20 03:14:12 s 1 -95798.789 0 +381439.01 8830.0 C57
2020-08-20 03:24:12 S 22 56 02.681 -32 10 17.04 V C57
2020-08-20 03:24:12 s 1 -96130.737 0 +381308.28 3480.0 C57
2020-08-20 03:34:12 S 22 56 02.599 -32 10 59.30 V C57
2020-08-20 03:34:12 s 1 -96462.462 0 +381176.65 8020.0 C57
2020-08-20 03:44:12 S 22 56 02.731 -32 11 40.16 V C57
2020-08-20 03:44:12 s 1 -96793.961 0 +381044.11 2460.0 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)