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
2020-08-23 14:34:12 S 22 56 03.048 -38 00 50.58 V C57
2020-08-23 14:34:12 s 1 -208700.26 1 +197142.51 7740.0 C57
2020-08-23 14:54:12 S 22 56 02.628 -38 02 15.94 V C57
2020-08-23 14:54:12 s 1 -208779.94 3 +195879.87 6850.0 C57
2020-08-23 16:04:12 S 22 56 03.168 -38 07 14.59 V C57
2020-08-23 16:04:12 s 1 -209018.32 2 +191422.87 2140.0 C57
2020-08-23 16:14:12 S 22 56 03.242 -38 08 00.13 V C57
2020-08-23 16:14:12 s 1 -209047.15 6 +190781.34 2180.0 C57
2020-08-23 16:34:12 S 22 56 03.384 -38 09 26.14 V C57
2020-08-23 16:34:12 s 1 -209100.84 8 +189494.67 640.0 C57
2020-08-23 16:44:12 S 22 56 03.614 -38 10 02.39 V C57
2020-08-23 16:44:12 s 1 -209125.69 6 +188849.51 9050.0 C57
2020-08-23 16:54:12 S 22 56 03.638 -38 10 51.71 V C57
2020-08-23 16:54:12 s 1 -209149.20 2 +188203.15 6910.0 C57
2020-08-23 17:04:12 S 22 56 03.605 -38 11 30.19 V C57
2020-08-23 17:04:12 s 1 -209171.36 1 +187555.58 4220.0 C57
2020-08-23 17:14:12 S 22 56 03.732 -38 12 14.69 V C57
2020-08-23 17:14:12 s 1 -209192.16 8 +186906.79 980.0 C57
2020-08-23 17:24:12 S 22 56 03.403 -38 13 00.12 V C57
2020-08-23 17:24:12 s 1 -209211.61 5 +186256.79 7180.0 C57
2020-08-23 17:34:12 S 22 56 03.979 -38 13 44.83 V C57
2020-08-23 17:34:12 s 1 -209229.69 7 +185605.57 2810.0 C57
2020-08-23 17:44:12 S 22 56 03.660 -38 14 24.68 V C57
2020-08-23 17:44:12 s 1 -209246.40 7 +184953.14 7890.0 C57
2020-08-23 17:54:12 S 22 56 03.530 -38 15 10.66 V C57
2020-08-23 17:54:12 s 1 -209261.73 9 +184299.49 2400.0 C57
2020-08-23 18:14:12 S 22 56 03.996 -38 16 35.47 V C57
2020-08-23 18:14:12 s 1 -209288.24 4 +182988.53 9710.0 C57
2020-08-23 18:24:12 S 22 56 03.998 -38 17 16.33 V C57
2020-08-23 18:24:12 s 1 -209299.40 4 +182331.22 2510.0 C57
2020-08-23 18:34:12 S 22 56 04.109 -38 18 03.46 V C57
2020-08-23 18:34:12 s 1 -209309.16 1 +181672.68 4730.0 C57
2020-08-23 18:44:12 S 22 56 04.212 -38 18 40.86 V C57
2020-08-23 18:44:12 s 1 -209317.50 7 +181012.93 6370.0 C57
2020-08-23 18:54:12 S 22 56 04.274 -38 19 26.69 V C57
2020-08-23 18:54:12 s 1 -209324.43 7 +180351.95 7430.0 C57
2020-08-23 19:04:12 S 22 56 04.478 -38 20 11.08 V C57
2020-08-23 19:04:12 s 1 -209329.94 4 +179689.74 7910.0 C57
2020-08-23 19:14:12 S 22 56 04.474 -38 20 54.13 V C57
2020-08-23 19:14:12 s 1 -209334.02 0 +179026.30 7800.0 C57
2020-08-23 22:24:12 S 22 56 05.590 -38 34 35.26 V C57
2020-08-23 22:24:12 s 1 -209130.58 7 +166186.36 260.0 C57
2020-08-23 22:34:12 S 22 56 05.462 -38 35 25.98 V C57
2020-08-23 22:34:12 s 1 -209104.59 3 +165498.14 7780.0 C57
2020-08-23 22:44:12 S 22 56 05.496 -38 36 10.01 V C57
2020-08-23 22:44:12 s 1 -209077.01 7 +164808.67 4660.0 C57
2020-08-24 00:34:12 S 22 56 06.259 -38 44 08.88 V C57
2020-08-24 00:34:12 s 1 -208667.06 0 +157141.63 6370.0 C57
2020-08-24 00:44:12 S 22 56 06.391 -38 44 47.40 V C57
2020-08-24 00:44:12 s 1 -208619.88 6 +156437.07 5170.0 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)