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
2020-08-24 16:54:14 S 22 56 14.201 -39 55 27.41 V C57
2020-08-24 16:54:14 s 1 -194419.59 9 +81981.974 9950.0 C57
2020-08-24 17:24:14 S 22 56 14.414 -39 57 47.09 V C57
2020-08-24 17:24:14 s 1 -193611.06 9 +79486.925 9730.0 C57
2020-08-24 18:04:14 S 22 56 14.614 -40 00 33.95 V C57
2020-08-24 18:04:14 s 1 -192490.57 6 +76142.809 8430.0 C57
2020-08-24 18:14:14 S 22 56 14.515 -40 01 21.68 V C57
2020-08-24 18:14:14 s 1 -192202.73 3 +75303.696 7380.0 C57
2020-08-24 18:24:14 S 22 56 15.211 -40 02 05.86 V C57
2020-08-24 18:24:14 s 1 -191911.76 1 +74463.357 5040.0 C57
2020-08-24 18:44:14 S 22 56 14.650 -40 03 38.23 V C57
2020-08-24 18:44:14 s 1 -191320.33 9 +72779.010 6400.0 C57
2020-08-24 18:54:14 S 22 56 14.945 -40 04 19.60 V C57
2020-08-24 18:54:14 s 1 -191019.84 7 +71935.011 80.0 C57
2020-08-24 19:04:14 S 22 56 14.878 -40 05 02.62 V C57
2020-08-24 19:04:14 s 1 -190716.13 6 +71089.799 2430.0 C57
2020-08-24 19:14:14 S 22 56 15.571 -40 05 39.08 V C57
2020-08-24 19:14:14 s 1 -190409.18 6 +70243.378 3420.0 C57
2020-08-24 19:24:14 S 22 56 16.056 -40 06 31.32 V C57
2020-08-24 19:24:14 s 1 -190098.97 3 +69395.753 3060.0 C57
2020-08-24 19:34:14 S 22 56 15.146 -40 07 20.64 V C57
2020-08-24 19:34:14 s 1 -189785.47 5 +68546.928 1330.0 C57
2020-08-24 19:44:14 S 22 56 15.254 -40 07 50.27 V C57
2020-08-24 19:44:14 s 1 -189468.66 7 +67696.907 8210.0 C57
2020-08-24 19:54:14 S 22 56 15.245 -40 08 45.24 V C57
2020-08-24 19:54:14 s 1 -189148.52 8 +66845.695 3710.0 C57
2020-08-24 20:14:14 S 22 56 16.277 -40 10 17.29 V C57
2020-08-24 20:14:14 s 1 -188498.15 8 +65139.714 500.0 C57
2020-08-24 20:44:14 S 22 56 16.380 -40 12 26.57 V C57
2020-08-24 20:44:14 s 1 -187497.01 5 +62571.927 10.0 C57
2020-08-24 21:04:14 S 22 56 16.183 -40 13 52.36 V C57
2020-08-24 21:04:14 s 1 -186812.24 0 +60854.253 2460.0 C57
2020-08-24 21:14:14 S 22 56 16.346 -40 14 41.14 V C57
2020-08-24 21:14:14 s 1 -186464.57 4 +59993.688 6480.0 C57
2020-08-24 21:44:14 S 22 56 16.421 -40 16 49.12 V C57
2020-08-24 21:44:14 s 1 -185400.14 8 +57405.149 9600.0 C57
2020-08-24 21:54:14 S 22 56 16.834 -40 17 38.22 V C57
2020-08-24 21:54:14 s 1 -185038.11 1 +56540.043 7630.0 C57
2020-08-24 23:24:14 S 22 56 17.762 -40 24 16.92 V C57
2020-08-24 23:24:14 s 1 -181611.82 7 +48704.579 9820.0 C57
2020-08-24 23:34:14 S 22 56 17.950 -40 25 03.47 V C57
2020-08-24 23:34:14 s 1 -181211.95 2 +47828.611 2060.0 C57
2020-08-24 23:44:14 S 22 56 18.053 -40 25 49.15 V C57
2020-08-24 23:44:14 s 1 -180808.13 4 +46951.600 2660.0 C57
2020-08-24 23:54:14 S 22 56 18.322 -40 26 24.61 V C57
2020-08-24 23:54:14 s 1 -180400.34 4 +46073.557 1600.0 C57
2020-08-25 00:14:14 S 22 56 18.139 -40 27 56.02 V C57
2020-08-25 00:14:14 s 1 -179572.72 6 +44314.408 4460.0 C57
2020-08-25 01:14:14 S 22 56 18.782 -40 32 26.41 V C57
2020-08-25 01:14:14 s 1 -176991.31 8 +39013.182 1920.0 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)