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
2020-08-22 16:14:12 S 22 55 57.427 -36 25 06.35 V C57
2020-08-22 16:14:12 s 1 -193669.89 2 +271308.22 4490.0 C57
2020-08-22 16:24:12 S 22 55 57.648 -36 25 47.46 V C57
2020-08-22 16:24:12 s 1 -193841.39 9 +270827.68 2670.0 C57
2020-08-22 16:34:12 S 22 55 57.367 -36 26 32.42 V C57
2020-08-22 16:34:12 s 1 -194012.15 2 +270346.09 550.0 C57
2020-08-22 16:44:12 S 22 55 57.859 -36 27 14.51 V C57
2020-08-22 16:44:12 s 1 -194182.15 0 +269863.45 8120.0 C57
2020-08-22 16:54:12 S 22 55 57.701 -36 27 52.31 V C57
2020-08-22 16:54:12 s 1 -194351.38 9 +269379.74 5390.0 C57
2020-08-22 17:04:12 S 22 55 57.730 -36 28 42.89 V C57
2020-08-22 17:04:12 s 1 -194519.86 6 +268894.98 2340.0 C57
2020-08-22 17:14:12 S 22 55 57.782 -36 29 22.78 V C57
2020-08-22 17:14:12 s 1 -194687.58 0 +268409.17 8980.0 C57
2020-08-22 17:24:12 S 22 55 57.703 -36 30 03.64 V C57
2020-08-22 17:24:12 s 1 -194854.52 7 +267922.29 5320.0 C57
2020-08-22 17:34:12 S 22 55 57.787 -36 30 50.22 V C57
2020-08-22 17:34:12 s 1 -195020.70 4 +267434.36 1340.0 C57
2020-08-22 17:44:12 S 22 55 57.727 -36 31 35.69 V C57
2020-08-22 17:44:12 s 1 -195186.11 0 +266945.37 7040.0 C57
2020-08-22 18:04:12 S 22 55 57.595 -36 32 53.23 V C57
2020-08-22 18:04:12 s 1 -195514.59 3 +265964.19 7510.0 C57
2020-08-22 18:14:12 S 22 55 58.022 -36 33 41.11 V C57
2020-08-22 18:14:12 s 1 -195677.66 6 +265472.01 2270.0 C57
2020-08-22 18:24:12 S 22 55 57.677 -36 34 20.21 V C57
2020-08-22 18:24:12 s 1 -195839.95 6 +264978.77 6720.0 C57
2020-08-22 18:34:12 S 22 55 57.739 -36 35 02.69 V C57
2020-08-22 18:34:12 s 1 -196001.45 9 +264484.46 840.0 C57
2020-08-22 18:54:12 S 22 55 58.210 -36 36 28.08 V C57
2020-08-22 18:54:12 s 1 -196322.09 7 +263492.64 8120.0 C57
2020-08-22 19:04:12 S 22 55 58.135 -36 37 10.99 V C57
2020-08-22 19:04:12 s 1 -196481.22 6 +262995.14 1280.0 C57
2020-08-22 19:14:12 S 22 55 58.006 -36 37 52.21 V C57
2020-08-22 19:14:12 s 1 -196639.55 8 +262496.56 4120.0 C57
2020-08-22 19:24:12 S 22 55 58.075 -36 38 36.74 V C57
2020-08-22 19:24:12 s 1 -196797.09 0 +261996.91 6630.0 C57
2020-08-22 19:44:12 S 22 55 58.104 -36 40 03.18 V C57
2020-08-22 19:44:12 s 1 -197109.74 1 +260994.41 670.0 C57
2020-08-22 19:54:12 S 22 55 58.147 -36 40 49.94 V C57
2020-08-22 19:54:12 s 1 -197264.85 5 +260491.55 2200.0 C57
2020-08-22 20:04:12 S 22 55 58.051 -36 41 24.76 V C57
2020-08-22 20:04:12 s 1 -197419.15 7 +259987.61 3400.0 C57
2020-08-22 20:14:12 S 22 55 58.087 -36 42 12.53 V C57
2020-08-22 20:14:12 s 1 -197572.64 5 +259482.61 4270.0 C57
2020-08-22 20:24:12 S 22 55 57.919 -36 42 51.37 V C57
2020-08-22 20:24:12 s 1 -197725.31 5 +258976.52 4810.0 C57
2020-08-22 20:34:12 S 22 55 58.282 -36 43 38.21 V C57
2020-08-22 20:34:12 s 1 -197877.16 4 +258469.37 5010.0 C57
2020-08-22 20:44:12 S 22 55 58.272 -36 44 20.54 V C57
2020-08-22 20:44:12 s 1 -198028.19 0 +257961.13 4880.0 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)