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 02:34:12 S 22 56 11.654 -30 28 30.36 V C57
2020-08-19 02:34:12 s 1 -44676.596 0 +390682.52 7630.0 C57
2020-08-19 02:44:12 S 22 56 11.558 -30 29 16.76 V C57
2020-08-19 02:44:12 s 1 -45032.272 0 +390688.03 2980.0 C57
2020-08-19 02:54:12 S 22 56 11.575 -30 29 54.13 V C57
2020-08-19 02:54:12 s 1 -45387.849 0 +390692.61 8300.0 C57
2020-08-19 03:04:12 S 22 56 11.446 -30 30 34.45 V C57
2020-08-19 03:04:12 s 1 -45743.325 0 +390696.25 3570.0 C57
2020-08-19 03:14:12 S 22 56 11.112 -30 31 16.03 V C57
2020-08-19 03:14:12 s 1 -46098.701 0 +390698.96 8790.0 C57
2020-08-19 03:34:12 S 22 56 11.136 -30 32 39.80 V C57
2020-08-19 03:34:12 s 1 -46809.147 0 +390701.56 9090.0 C57
2020-08-19 03:44:12 S 22 56 11.074 -30 33 18.72 V C57
2020-08-19 03:44:12 s 1 -47164.215 0 +390701.46 4170.0 C57
2020-08-19 03:54:12 S 22 56 10.980 -30 33 57.20 V C57
2020-08-19 03:54:12 s 1 -47519.179 0 +390700.43 9200.0 C57
2020-08-19 04:04:12 S 22 56 10.870 -30 34 42.28 V C57
2020-08-19 04:04:12 s 1 -47874.039 0 +390698.46 4180.0 C57
2020-08-19 04:14:12 S 22 56 11.009 -30 35 21.19 V C57
2020-08-19 04:14:12 s 1 -48228.792 0 +390695.55 9110.0 C57
2020-08-19 04:24:12 S 22 56 10.776 -30 35 58.92 V C57
2020-08-19 04:24:12 s 1 -48583.439 0 +390691.71 4000.0 C57
2020-08-19 04:34:12 S 22 56 10.747 -30 36 42.59 V C57
2020-08-19 04:34:12 s 1 -48937.979 0 +390686.94 8830.0 C57
2020-08-19 04:44:12 S 22 56 10.706 -30 37 26.83 V C57
2020-08-19 04:44:12 s 1 -49292.410 0 +390681.23 3610.0 C57
2020-08-19 04:54:12 S 22 56 10.522 -30 38 04.31 V C57
2020-08-19 04:54:12 s 1 -49646.732 0 +390674.59 8350.0 C57
2020-08-19 05:04:12 S 22 56 10.529 -30 38 43.66 V C57
2020-08-19 05:04:12 s 1 -50000.944 0 +390667.02 3030.0 C57
2020-08-19 05:14:12 S 22 56 10.459 -30 39 26.06 V C57
2020-08-19 05:14:12 s 1 -50355.045 0 +390658.52 7660.0 C57
2020-08-19 05:24:12 S 22 56 10.428 -30 40 06.78 V C57
2020-08-19 05:24:12 s 1 -50709.035 0 +390649.08 2240.0 C57
2020-08-19 05:34:12 S 22 56 10.430 -30 40 49.62 V C57
2020-08-19 05:34:12 s 1 -51062.912 0 +390638.71 6770.0 C57
2020-08-19 05:44:12 S 22 56 10.087 -30 41 31.99 V C57
2020-08-19 05:44:12 s 1 -51416.676 0 +390627.41 1250.0 C57
2020-08-19 05:54:12 S 22 56 10.205 -30 42 06.77 V C57
2020-08-19 05:54:12 s 1 -51770.326 0 +390615.18 5670.0 C57
2020-08-19 06:04:12 S 22 56 10.174 -30 42 50.04 V C57
2020-08-19 06:04:12 s 1 -52123.861 0 +390602.02 40.0 C57
2020-08-19 06:14:12 S 22 56 10.022 -30 43 28.38 V C57
2020-08-19 06:14:12 s 1 -52477.280 0 +390587.92 4360.0 C57
2020-08-19 06:24:12 S 22 56 09.893 -30 44 12.73 V C57
2020-08-19 06:24:12 s 1 -52830.583 0 +390572.90 8620.0 C57
2020-08-19 06:34:12 S 22 56 09.934 -30 44 51.11 V C57
2020-08-19 06:34:12 s 1 -53183.769 0 +390556.95 2830.0 C57
2020-08-19 06:44:12 S 22 56 10.025 -30 45 32.47 V C57
2020-08-19 06:44:12 s 1 -53536.836 0 +390540.06 6990.0 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)