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 14:14:12 S 22 55 59.923 -32 55 06.06 V C57
2020-08-20 14:14:12 s 1 -117186.41 0 +370855.43 7600.0 C57
2020-08-20 14:24:12 S 22 55 59.822 -32 55 45.52 V C57
2020-08-20 14:24:12 s 1 -117501.64 7 +370664.49 4970.0 C57
2020-08-20 14:34:12 S 22 55 59.765 -32 56 26.45 V C57
2020-08-20 14:34:12 s 1 -117816.59 9 +370472.64 2220.0 C57
2020-08-20 14:54:12 S 22 55 59.794 -32 57 47.95 V C57
2020-08-20 14:54:12 s 1 -118445.64 4 +370086.19 6360.0 C57
2020-08-20 15:04:12 S 22 55 59.700 -32 58 32.99 V C57
2020-08-20 15:04:12 s 1 -118759.73 6 +369891.59 3240.0 C57
2020-08-20 15:14:12 S 22 55 59.729 -32 59 12.59 V C57
2020-08-20 15:14:12 s 1 -119073.53 9 +369696.08 0.0 C57
2020-08-20 15:24:12 S 22 55 59.652 -32 59 54.38 V C57
2020-08-20 15:24:12 s 1 -119387.05 3 +369499.65 6630.0 C57
2020-08-20 15:34:12 S 22 55 59.628 -33 00 37.19 V C57
2020-08-20 15:34:12 s 1 -119700.27 5 +369302.31 3140.0 C57
2020-08-20 15:44:12 S 22 55 59.722 -33 01 15.67 V C57
2020-08-20 15:44:12 s 1 -120013.20 6 +369104.05 9520.0 C57
2020-08-20 15:54:12 S 22 55 59.585 -33 02 02.15 V C57
2020-08-20 15:54:12 s 1 -120325.84 4 +368904.87 5780.0 C57
2020-08-20 16:04:12 S 22 55 59.652 -33 02 44.88 V C57
2020-08-20 16:04:12 s 1 -120638.18 9 +368704.78 1910.0 C57
2020-08-20 16:14:12 S 22 55 59.563 -33 03 25.38 V C57
2020-08-20 16:14:12 s 1 -120950.23 9 +368503.77 7920.0 C57
2020-08-20 16:24:12 S 22 55 59.489 -33 04 05.23 V C57
2020-08-20 16:24:12 s 1 -121261.99 3 +368301.85 3800.0 C57
2020-08-20 16:34:12 S 22 55 59.556 -33 04 46.31 V C57
2020-08-20 16:34:12 s 1 -121573.45 1 +368099.01 9560.0 C57
2020-08-20 16:44:12 S 22 55 59.266 -33 05 27.17 V C57
2020-08-20 16:44:12 s 1 -121884.61 1 +367895.26 5180.0 C57
2020-08-20 16:54:12 S 22 55 59.371 -33 06 06.62 V C57
2020-08-20 16:54:12 s 1 -122195.47 2 +367690.58 680.0 C57
2020-08-20 17:04:12 S 22 55 59.434 -33 06 49.50 V C57
2020-08-20 17:04:12 s 1 -122506.03 4 +367485.00 6050.0 C57
2020-08-20 17:14:12 S 22 55 59.390 -33 07 32.84 V C57
2020-08-20 17:14:12 s 1 -122816.29 5 +367278.49 1290.0 C57
2020-08-20 17:24:12 S 22 55 59.338 -33 08 11.69 V C57
2020-08-20 17:24:12 s 1 -123126.25 4 +367071.07 6410.0 C57
2020-08-20 17:34:12 S 22 55 59.458 -33 08 53.52 V C57
2020-08-20 17:34:12 s 1 -123435.91 1 +366862.73 1390.0 C57
2020-08-20 17:44:12 S 22 55 59.124 -33 09 34.70 V C57
2020-08-20 17:44:12 s 1 -123745.26 4 +366653.47 6240.0 C57
2020-08-20 17:54:12 S 22 55 59.186 -33 10 21.04 V C57
2020-08-20 17:54:12 s 1 -124054.31 2 +366443.30 970.0 C57
2020-08-20 18:04:12 S 22 55 59.234 -33 11 00.89 V C57
2020-08-20 18:04:12 s 1 -124363.05 4 +366232.21 5560.0 C57
2020-08-20 18:14:12 S 22 55 59.122 -33 11 41.39 V C57
2020-08-20 18:14:12 s 1 -124671.49 0 +366020.20 20.0 C57
2020-08-20 18:24:12 S 22 55 59.076 -33 12 23.22 V C57
2020-08-20 18:24:12 s 1 -124979.61 7 +365807.27 4360.0 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)