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 17:14:12 S 22 56 05.741 -31 28 25.36 V C57
2020-08-19 17:14:12 s 1 -75505.613 0 +387612.24 3110.0 C57
2020-08-19 17:24:12 S 22 56 05.770 -31 29 09.56 V C57
2020-08-19 17:24:12 s 1 -75849.393 0 +387536.33 3030.0 C57
2020-08-19 17:34:12 S 22 56 05.722 -31 29 45.42 V C57
2020-08-19 17:34:12 s 1 -76193.001 0 +387459.49 2870.0 C57
2020-08-19 17:44:12 S 22 56 05.717 -31 30 30.92 V C57
2020-08-19 17:44:12 s 1 -76536.436 0 +387381.74 2640.0 C57
2020-08-19 17:54:12 S 22 56 05.710 -31 31 10.20 V C57
2020-08-19 17:54:12 s 1 -76879.697 0 +387303.08 2320.0 C57
2020-08-19 18:04:12 S 22 56 05.674 -31 31 51.28 V C57
2020-08-19 18:04:12 s 1 -77222.784 0 +387223.49 1930.0 C57
2020-08-19 18:14:12 S 22 56 05.702 -31 32 34.04 V C57
2020-08-19 18:14:12 s 1 -77565.695 0 +387143.00 1460.0 C57
2020-08-19 18:24:12 S 22 56 05.446 -31 33 03.92 V C57
2020-08-19 18:24:12 s 1 -77908.429 0 +387061.58 900.0 C57
2020-08-19 18:54:12 S 22 56 05.167 -31 35 20.69 V C57
2020-08-19 18:54:12 s 1 -78935.567 0 +386811.85 8760.0 C57
2020-08-19 19:04:12 S 22 56 05.237 -31 36 02.02 V C57
2020-08-19 19:04:12 s 1 -79277.588 0 +386726.77 7890.0 C57
2020-08-19 19:24:12 S 22 56 05.107 -31 37 17.87 V C57
2020-08-19 19:24:12 s 1 -79961.087 0 +386553.88 5900.0 C57
2020-08-19 19:34:12 S 22 56 05.126 -31 37 54.23 V C57
2020-08-19 19:34:12 s 1 -80302.564 0 +386466.06 4780.0 C57
2020-08-19 19:44:12 S 22 56 04.829 -31 38 42.43 V C57
2020-08-19 19:44:12 s 1 -80643.858 0 +386377.32 3580.0 C57
2020-08-19 19:54:12 S 22 56 04.778 -31 39 27.29 V C57
2020-08-19 19:54:12 s 1 -80984.968 0 +386287.67 2300.0 C57
2020-08-19 20:14:12 S 22 56 04.980 -31 40 42.31 V C57
2020-08-19 20:14:12 s 1 -81666.633 0 +386105.63 9480.0 C57
2020-08-19 20:34:12 S 22 56 04.704 -31 42 07.09 V C57
2020-08-19 20:34:12 s 1 -82347.552 0 +385919.93 6330.0 C57
2020-08-19 20:44:12 S 22 56 04.742 -31 42 49.39 V C57
2020-08-19 20:44:12 s 1 -82687.729 0 +385825.71 4630.0 C57
2020-08-19 21:04:12 S 22 56 04.462 -31 44 11.40 V C57
2020-08-19 21:04:12 s 1 -83367.517 0 +385634.53 980.0 C57
2020-08-19 21:14:12 S 22 56 04.625 -31 44 54.85 V C57
2020-08-19 21:14:12 s 1 -83707.125 0 +385537.56 9020.0 C57
2020-08-19 21:24:12 S 22 56 04.735 -31 45 31.75 V C57
2020-08-19 21:24:12 s 1 -84046.542 0 +385439.69 6980.0 C57
2020-08-19 21:34:12 S 22 56 04.421 -31 46 13.87 V C57
2020-08-19 21:34:12 s 1 -84385.766 0 +385340.90 4850.0 C57
2020-08-19 21:44:12 S 22 56 04.574 -31 46 57.72 V C57
2020-08-19 21:44:12 s 1 -84724.797 0 +385241.20 2640.0 C57
2020-08-19 21:54:12 S 22 56 04.498 -31 47 34.15 V C57
2020-08-19 21:54:12 s 1 -85063.634 0 +385140.58 330.0 C57
2020-08-19 22:04:12 S 22 56 04.075 -31 48 17.82 V C57
2020-08-19 22:04:12 s 1 -85402.276 0 +385039.05 7950.0 C57
2020-08-19 22:14:12 S 22 56 04.435 -31 48 59.18 V C57
2020-08-19 22:14:12 s 1 -85740.722 0 +384936.61 5470.0 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)