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 11:24:12 S 22 55 57.062 -36 04 35.87 V C57
2020-08-22 11:24:12 s 1 -188379.98 2 +284789.09 8820.0 C57
2020-08-22 11:34:12 S 22 55 57.046 -36 05 24.32 V C57
2020-08-22 11:34:12 s 1 -188572.23 6 +284338.75 5430.0 C57
2020-08-22 11:44:12 S 22 55 56.705 -36 06 06.41 V C57
2020-08-22 11:44:12 s 1 -188763.80 9 +283887.39 1760.0 C57
2020-08-22 11:54:12 S 22 55 57.017 -36 06 47.74 V C57
2020-08-22 11:54:12 s 1 -188954.69 8 +283434.99 7810.0 C57
2020-08-22 12:04:12 S 22 55 57.091 -36 07 28.02 V C57
2020-08-22 12:04:12 s 1 -189144.90 0 +282981.56 3580.0 C57
2020-08-22 12:14:12 S 22 55 57.178 -36 08 08.02 V C57
2020-08-22 12:14:12 s 1 -189334.41 4 +282527.10 9070.0 C57
2020-08-22 12:24:12 S 22 55 57.149 -36 08 53.81 V C57
2020-08-22 12:24:12 s 1 -189523.23 7 +282071.61 4280.0 C57
2020-08-22 12:34:12 S 22 55 56.808 -36 09 32.36 V C57
2020-08-22 12:34:12 s 1 -189711.36 7 +281615.08 9210.0 C57
2020-08-22 12:44:12 S 22 55 57.098 -36 10 16.61 V C57
2020-08-22 12:44:12 s 1 -189898.80 0 +281157.52 3860.0 C57
2020-08-22 12:54:12 S 22 55 57.070 -36 10 58.40 V C57
2020-08-22 12:54:12 s 1 -190085.53 6 +280698.92 8230.0 C57
2020-08-22 13:14:12 S 22 55 57.456 -36 12 25.67 V C57
2020-08-22 13:14:12 s 1 -190456.90 4 +279778.62 6100.0 C57
2020-08-22 13:24:12 S 22 55 56.990 -36 13 14.52 V C57
2020-08-22 13:24:12 s 1 -190641.53 1 +279316.91 9610.0 C57
2020-08-22 13:34:12 S 22 55 57.214 -36 13 44.36 V C57
2020-08-22 13:34:12 s 1 -190825.45 0 +278854.16 2830.0 C57
2020-08-22 13:44:12 S 22 55 57.427 -36 14 28.57 V C57
2020-08-22 13:44:12 s 1 -191008.66 0 +278390.37 5770.0 C57
2020-08-22 13:54:12 S 22 55 57.295 -36 15 11.92 V C57
2020-08-22 13:54:12 s 1 -191191.15 6 +277925.54 8410.0 C57
2020-08-22 14:04:12 S 22 55 57.547 -36 15 56.20 V C57
2020-08-22 14:04:12 s 1 -191372.93 8 +277459.67 760.0 C57
2020-08-22 14:14:12 S 22 55 57.427 -36 16 41.59 V C57
2020-08-22 14:14:12 s 1 -191554.00 2 +276992.76 2830.0 C57
2020-08-22 14:24:12 S 22 55 57.367 -36 17 20.76 V C57
2020-08-22 14:24:12 s 1 -191734.34 6 +276524.81 4600.0 C57
2020-08-22 14:44:12 S 22 55 57.398 -36 18 45.86 V C57
2020-08-22 14:44:12 s 1 -192092.86 5 +275585.76 7260.0 C57
2020-08-22 14:54:12 S 22 55 57.619 -36 19 28.02 V C57
2020-08-22 14:54:12 s 1 -192271.03 4 +275114.67 8140.0 C57
2020-08-22 15:04:12 S 22 55 57.341 -36 20 09.53 V C57
2020-08-22 15:04:12 s 1 -192448.47 3 +274642.54 8740.0 C57
2020-08-22 15:24:12 S 22 55 57.504 -36 21 36.76 V C57
2020-08-22 15:24:12 s 1 -192801.15 1 +273695.12 9030.0 C57
2020-08-22 15:34:12 S 22 55 57.478 -36 22 23.63 V C57
2020-08-22 15:34:12 s 1 -192976.38 5 +273219.84 8720.0 C57
2020-08-22 15:44:12 S 22 55 57.590 -36 22 59.92 V C57
2020-08-22 15:44:12 s 1 -193150.87 9 +272743.52 8120.0 C57
2020-08-22 16:04:12 S 22 55 57.511 -36 24 27.11 V C57
2020-08-22 16:04:12 s 1 -193497.63 5 +271787.70 6000.0 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)