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 06:54:12 S 22 55 56.448 -35 45 31.00 V C57
2020-08-22 06:54:12 s 1 -182939.63 1 +296561.54 9150.0 C57
2020-08-22 07:04:12 S 22 55 56.782 -35 46 13.55 V C57
2020-08-22 07:04:12 s 1 -183149.45 1 +296138.73 2890.0 C57
2020-08-22 07:14:12 S 22 55 56.710 -35 46 56.82 V C57
2020-08-22 07:14:12 s 1 -183358.64 9 +295714.91 6380.0 C57
2020-08-22 07:24:12 S 22 55 56.426 -35 47 34.73 V C57
2020-08-22 07:24:12 s 1 -183567.22 1 +295290.08 9610.0 C57
2020-08-22 07:34:12 S 22 55 56.503 -35 48 20.77 V C57
2020-08-22 07:34:12 s 1 -183775.16 7 +294864.24 2590.0 C57
2020-08-22 07:44:12 S 22 55 56.614 -35 49 01.02 V C57
2020-08-22 07:44:12 s 1 -183982.48 3 +294437.39 5310.0 C57
2020-08-22 07:54:12 S 22 55 56.810 -35 49 45.48 V C57
2020-08-22 07:54:12 s 1 -184189.16 9 +294009.52 7780.0 C57
2020-08-22 08:04:12 S 22 55 56.834 -35 50 26.48 V C57
2020-08-22 08:04:12 s 1 -184395.22 1 +293580.64 9990.0 C57
2020-08-22 08:14:12 S 22 55 56.688 -35 51 13.57 V C57
2020-08-22 08:14:12 s 1 -184600.63 8 +293150.75 1940.0 C57
2020-08-22 08:24:12 S 22 55 56.683 -35 51 54.11 V C57
2020-08-22 08:24:12 s 1 -184805.41 7 +292719.84 3640.0 C57
2020-08-22 08:34:12 S 22 55 57.002 -35 52 38.39 V C57
2020-08-22 08:34:12 s 1 -185009.55 7 +292287.92 5070.0 C57
2020-08-22 08:54:12 S 22 55 56.748 -35 54 01.37 V C57
2020-08-22 08:54:12 s 1 -185415.90 9 +291421.02 7150.0 C57
2020-08-22 09:04:12 S 22 55 56.858 -35 54 47.12 V C57
2020-08-22 09:04:12 s 1 -185618.11 8 +290986.05 7800.0 C57
2020-08-22 09:14:12 S 22 55 57.334 -35 55 17.87 V C57
2020-08-22 09:14:12 s 1 -185819.67 8 +290550.05 8180.0 C57
2020-08-22 09:24:12 S 22 55 57.050 -35 56 09.82 V C57
2020-08-22 09:24:12 s 1 -186020.58 8 +290113.04 8300.0 C57
2020-08-22 09:44:12 S 22 55 56.779 -35 57 31.03 V C57
2020-08-22 09:44:12 s 1 -186420.44 8 +289235.95 7750.0 C57
2020-08-22 09:54:12 S 22 55 56.933 -35 58 15.74 V C57
2020-08-22 09:54:12 s 1 -186619.39 4 +288795.87 7070.0 C57
2020-08-22 10:14:12 S 22 55 56.664 -35 59 41.93 V C57
2020-08-22 10:14:12 s 1 -187015.30 7 +287912.65 4910.0 C57
2020-08-22 10:24:12 S 22 55 56.830 -36 00 20.84 V C57
2020-08-22 10:24:12 s 1 -187212.26 9 +287469.51 3430.0 C57
2020-08-22 10:26:28 C 22 57 20.03 -36 11 42.3 V T08
2020-08-22 10:29:07 C 22 57 19.96 -36 11 53.7 V T08
2020-08-22 10:34:12 S 22 55 56.887 -36 01 01.16 V C57
2020-08-22 10:34:12 s 1 -187408.56 5 +287025.34 1680.0 C57
2020-08-22 10:37:05 C 22 57 19.75 -36 12 28.0 V T08
2020-08-22 10:44:12 S 22 55 56.604 -36 01 47.71 V C57
2020-08-22 10:44:12 s 1 -187604.19 3 +286580.14 9650.0 C57
2020-08-22 11:04:12 S 22 55 56.830 -36 03 09.36 V C57
2020-08-22 11:04:12 s 1 -187993.43 7 +285686.67 4790.0 C57
2020-08-22 11:09:15 C 22 57 18.97 -36 14 45.6 V T08
2020-08-22 11:14:12 S 22 55 56.950 -36 03 53.21 V C57
2020-08-22 11:14:12 s 1 -188187.04 8 +285238.39 1940.0 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)