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
2020-08-20 18:34:12 S 22 55 59.045 -33 13 06.64 V C57
2020-08-20 18:34:12 s 1 -125287.43 6 +365593.42 8560.0 C57
2020-08-20 18:44:12 S 22 55 59.105 -33 13 46.67 V C57
2020-08-20 18:44:12 s 1 -125594.94 5 +365378.66 2630.0 C57
2020-08-20 18:54:12 S 22 55 59.158 -33 14 30.98 V C57
2020-08-20 18:54:12 s 1 -125902.14 3 +365162.98 6560.0 C57
2020-08-20 19:04:12 S 22 55 58.889 -33 15 08.57 V C57
2020-08-20 19:04:12 s 1 -126209.03 0 +364946.38 370.0 C57
2020-08-20 19:14:12 S 22 55 59.251 -33 15 54.29 V C57
2020-08-20 19:14:12 s 1 -126515.60 3 +364728.86 4040.0 C57
2020-08-20 19:24:12 S 22 55 58.920 -33 16 33.17 V C57
2020-08-20 19:24:12 s 1 -126821.86 2 +364510.42 7570.0 C57
2020-08-20 19:34:12 S 22 55 58.954 -33 17 12.91 V C57
2020-08-20 19:34:12 s 1 -127127.80 6 +364291.07 980.0 C57
2020-08-20 19:44:12 S 22 55 58.826 -33 17 52.84 V C57
2020-08-20 19:44:12 s 1 -127433.43 5 +364070.79 4240.0 C57
2020-08-20 19:54:12 S 22 55 59.059 -33 18 37.62 V C57
2020-08-20 19:54:12 s 1 -127738.74 6 +363849.59 7380.0 C57
2020-08-20 20:04:12 S 22 55 58.709 -33 19 16.43 V C57
2020-08-20 20:04:12 s 1 -128043.73 9 +363627.48 380.0 C57
2020-08-20 20:14:12 S 22 55 58.788 -33 20 01.54 V C57
2020-08-20 20:14:12 s 1 -128348.41 2 +363404.44 3240.0 C57
2020-08-20 20:24:12 S 22 55 58.822 -33 20 41.82 V C57
2020-08-20 20:24:12 s 1 -128652.76 6 +363180.49 5970.0 C57
2020-08-20 20:34:12 S 22 55 58.685 -33 21 23.18 V C57
2020-08-20 20:34:12 s 1 -128956.79 8 +362955.61 8560.0 C57
2020-08-20 20:44:12 S 22 55 58.714 -33 22 07.10 V C57
2020-08-20 20:44:12 s 1 -129260.50 7 +362729.82 1010.0 C57
2020-08-20 20:54:12 S 22 55 58.630 -33 22 45.19 V C57
2020-08-20 20:54:12 s 1 -129563.89 4 +362503.10 3330.0 C57
2020-08-20 21:04:12 S 22 55 58.502 -33 23 30.73 V C57
2020-08-20 21:04:12 s 1 -129866.95 6 +362275.47 5510.0 C57
2020-08-20 21:14:12 S 22 55 58.584 -33 24 09.58 V C57
2020-08-20 21:14:12 s 1 -130169.69 2 +362046.91 7550.0 C57
2020-08-20 21:24:12 S 22 55 58.469 -33 24 48.67 V C57
2020-08-20 21:24:12 s 1 -130472.10 2 +361817.43 9460.0 C57
2020-08-20 21:34:12 S 22 55 58.608 -33 25 34.57 V C57
2020-08-20 21:34:12 s 1 -130774.18 4 +361587.03 1220.0 C57
2020-08-20 21:44:12 S 22 55 58.493 -33 26 10.00 V C57
2020-08-20 21:44:12 s 1 -131075.93 7 +361355.71 2850.0 C57
2020-08-20 21:54:12 S 22 55 58.510 -33 26 56.00 V C57
2020-08-20 21:54:12 s 1 -131377.36 0 +361123.46 4330.0 C57
2020-08-20 22:04:12 S 22 55 58.231 -33 27 37.04 V C57
2020-08-20 22:04:12 s 1 -131678.45 3 +360890.30 5680.0 C57
2020-08-20 22:14:12 S 22 55 58.234 -33 28 21.00 V C57
2020-08-20 22:14:12 s 1 -131979.21 3 +360656.21 6890.0 C57
2020-08-20 22:24:12 S 22 55 58.428 -33 29 03.19 V C57
2020-08-20 22:24:12 s 1 -132279.64 1 +360421.20 7950.0 C57
2020-08-20 22:34:12 S 22 55 58.255 -33 29 45.78 V C57
2020-08-20 22:34:12 s 1 -132579.73 4 +360185.27 8880.0 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)