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 11:14:12 S 22 56 08.112 -31 03 52.60 V C57
2020-08-19 11:14:12 s 1 -63021.940 0 +389733.63 7250.0 C57
2020-08-19 11:24:12 S 22 56 07.879 -31 04 35.29 V C57
2020-08-19 11:24:12 s 1 -63371.361 0 +389690.81 9730.0 C57
2020-08-19 11:34:12 S 22 56 07.982 -31 05 14.64 V C57
2020-08-19 11:34:12 s 1 -63720.640 0 +389647.07 2150.0 C57
2020-08-19 11:44:12 S 22 56 07.906 -31 05 57.26 V C57
2020-08-19 11:44:12 s 1 -64069.776 0 +389602.41 4500.0 C57
2020-08-19 11:54:12 S 22 56 07.699 -31 06 37.04 V C57
2020-08-19 11:54:12 s 1 -64418.769 0 +389556.82 6790.0 C57
2020-08-19 12:04:12 S 22 56 07.728 -31 07 19.45 V C57
2020-08-19 12:04:12 s 1 -64767.616 0 +389510.32 9010.0 C57
2020-08-19 12:14:12 S 22 56 07.769 -31 08 00.31 V C57
2020-08-19 12:14:12 s 1 -65116.319 0 +389462.89 1160.0 C57
2020-08-19 12:54:12 S 22 56 07.397 -31 10 39.90 V C57
2020-08-19 12:54:12 s 1 -66509.656 0 +389263.95 9100.0 C57
2020-08-19 13:04:12 S 22 56 07.385 -31 11 23.53 V C57
2020-08-19 13:04:12 s 1 -66857.618 0 +389211.92 920.0 C57
2020-08-19 13:14:12 S 22 56 07.174 -31 12 05.54 V C57
2020-08-19 13:14:12 s 1 -67205.430 0 +389158.96 2670.0 C57
2020-08-19 13:24:12 S 22 56 07.272 -31 12 45.43 V C57
2020-08-19 13:24:12 s 1 -67553.090 0 +389105.08 4340.0 C57
2020-08-19 13:34:12 S 22 56 07.226 -31 13 25.21 V C57
2020-08-19 13:34:12 s 1 -67900.599 0 +389050.28 5950.0 C57
2020-08-19 13:44:12 S 22 56 07.078 -31 14 08.59 V C57
2020-08-19 13:44:12 s 1 -68247.954 0 +388994.57 7490.0 C57
2020-08-19 13:54:12 S 22 56 07.188 -31 14 46.68 V C57
2020-08-19 13:54:12 s 1 -68595.156 0 +388937.93 8960.0 C57
2020-08-19 14:04:12 S 22 56 07.027 -31 15 30.38 V C57
2020-08-19 14:04:12 s 1 -68942.203 0 +388880.37 360.0 C57
2020-08-19 14:14:12 S 22 56 06.869 -31 16 09.41 V C57
2020-08-19 14:14:12 s 1 -69289.094 0 +388821.89 1690.0 C57
2020-08-19 14:24:12 S 22 56 06.991 -31 16 52.10 V C57
2020-08-19 14:24:12 s 1 -69635.830 0 +388762.50 2950.0 C57
2020-08-19 14:34:12 S 22 56 06.852 -31 17 35.16 V C57
2020-08-19 14:34:12 s 1 -69982.408 0 +388702.18 4130.0 C57
2020-08-19 14:44:12 S 22 56 06.806 -31 18 10.80 V C57
2020-08-19 14:44:12 s 1 -70328.828 0 +388640.94 5250.0 C57
2020-08-19 14:54:12 S 22 56 06.682 -31 18 51.91 V C57
2020-08-19 14:54:12 s 1 -70675.089 0 +388578.79 6290.0 C57
2020-08-19 15:04:12 S 22 56 06.710 -31 19 31.94 V C57
2020-08-19 15:04:12 s 1 -71021.191 0 +388515.72 7260.0 C57
2020-08-19 15:14:12 S 22 56 06.614 -31 20 19.50 V C57
2020-08-19 15:14:12 s 1 -71367.133 0 +388451.73 8160.0 C57
2020-08-19 15:24:12 S 22 56 06.485 -31 20 57.01 V C57
2020-08-19 15:24:12 s 1 -71712.913 0 +388386.82 8980.0 C57
2020-08-19 16:04:12 S 22 56 06.204 -31 23 37.03 V C57
2020-08-19 16:04:12 s 1 -73094.405 0 +388118.00 1540.0 C57
2020-08-19 17:04:12 S 22 56 06.029 -31 27 47.02 V C57
2020-08-19 17:04:12 s 1 -75161.662 0 +387687.25 3120.0 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)