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
2020-08-23 02:34:12 S 22 55 59.362 -37 09 13.54 V C57
2020-08-23 02:34:12 s 1 -202770.94 1 +239486.94 9650.0 C57
2020-08-23 02:44:12 S 22 55 59.537 -37 09 56.88 V C57
2020-08-23 02:44:12 s 1 -202890.19 8 +238939.28 6610.0 C57
2020-08-23 03:34:12 S 22 55 59.551 -37 13 32.20 V C57
2020-08-23 03:34:12 s 1 -203472.23 0 +236184.27 5610.0 C57
2020-08-23 03:44:12 S 22 55 59.719 -37 14 15.65 V C57
2020-08-23 03:44:12 s 1 -203585.76 0 +235629.92 240.0 C57
2020-08-23 04:04:12 S 22 55 59.858 -37 15 39.82 V C57
2020-08-23 04:04:12 s 1 -203809.91 3 +234517.84 8310.0 C57
2020-08-23 04:14:12 S 22 55 59.614 -37 16 22.40 V C57
2020-08-23 04:14:12 s 1 -203920.52 8 +233960.12 1750.0 C57
2020-08-23 04:24:12 S 22 56 00.065 -37 17 06.40 V C57
2020-08-23 04:24:12 s 1 -204030.16 4 +233401.28 4800.0 C57
2020-08-23 04:34:12 S 22 55 59.921 -37 17 49.67 V C57
2020-08-23 04:34:12 s 1 -204138.81 8 +232841.31 7440.0 C57
2020-08-23 04:44:12 S 22 56 00.034 -37 18 32.90 V C57
2020-08-23 04:44:12 s 1 -204246.48 5 +232280.21 9690.0 C57
2020-08-23 04:54:12 S 22 55 59.947 -37 19 11.78 V C57
2020-08-23 04:54:12 s 1 -204353.16 1 +231717.99 1520.0 C57
2020-08-23 05:04:12 S 22 55 59.933 -37 19 57.43 V C57
2020-08-23 05:04:12 s 1 -204458.84 3 +231154.64 2960.0 C57
2020-08-23 05:14:12 S 22 56 00.060 -37 20 39.59 V C57
2020-08-23 05:14:12 s 1 -204563.52 6 +230590.16 3990.0 C57
2020-08-23 05:34:12 S 22 56 00.103 -37 22 03.04 V C57
2020-08-23 05:34:12 s 1 -204769.88 2 +229457.81 4820.0 C57
2020-08-23 05:44:12 S 22 56 00.370 -37 22 49.15 V C57
2020-08-23 05:44:12 s 1 -204871.54 7 +228889.94 4620.0 C57
2020-08-23 05:54:12 S 22 56 00.312 -37 23 24.43 V C57
2020-08-23 05:54:12 s 1 -204972.19 7 +228320.94 4000.0 C57
2020-08-23 06:54:12 S 22 56 00.398 -37 27 52.20 V C57
2020-08-23 06:54:12 s 1 -205554.57 1 +224883.04 1540.0 C57
2020-08-23 07:04:12 S 22 56 00.595 -37 28 30.83 V C57
2020-08-23 07:04:12 s 1 -205648.00 7 +224306.06 7990.0 C57
2020-08-23 07:24:12 S 22 56 00.605 -37 29 56.18 V C57
2020-08-23 07:24:12 s 1 -205831.73 3 +223148.69 9600.0 C57
2020-08-23 07:44:12 S 22 56 00.641 -37 31 27.52 V C57
2020-08-23 07:44:12 s 1 -206011.23 7 +221986.74 9490.0 C57
2020-08-23 07:54:12 S 22 56 00.622 -37 32 05.28 V C57
2020-08-23 07:54:12 s 1 -206099.39 4 +221404.05 3780.0 C57
2020-08-23 08:04:12 S 22 56 00.538 -37 32 46.32 V C57
2020-08-23 08:04:12 s 1 -206186.48 3 +220820.21 7640.0 C57
2020-08-23 08:34:12 S 22 56 00.941 -37 34 57.90 V C57
2020-08-23 08:34:12 s 1 -206441.29 5 +219061.78 6590.0 C57
2020-08-23 08:44:12 S 22 56 01.087 -37 35 42.40 V C57
2020-08-23 08:44:12 s 1 -206524.06 6 +218473.33 8680.0 C57
2020-08-23 08:54:12 S 22 56 01.483 -37 36 19.22 V C57
2020-08-23 08:54:12 s 1 -206605.74 6 +217883.73 340.0 C57
2020-08-23 09:04:12 S 22 56 01.174 -37 37 08.11 V C57
2020-08-23 09:04:12 s 1 -206686.33 1 +217292.98 1540.0 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)