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
2020-08-21 17:14:12 S 22 55 56.525 -34 47 51.47 V C57
2020-08-21 17:14:12 s 1 -163795.24 1 +327855.98 2090.0 C57
2020-08-21 17:24:12 S 22 55 56.654 -34 48 34.74 V C57
2020-08-21 17:24:12 s 1 -164049.85 2 +327513.86 4110.0 C57
2020-08-21 17:34:12 S 22 55 56.573 -34 49 14.77 V C57
2020-08-21 17:34:12 s 1 -164303.98 5 +327170.79 5940.0 C57
2020-08-21 17:44:12 S 22 55 56.402 -34 49 58.91 V C57
2020-08-21 17:44:12 s 1 -164557.63 7 +326826.75 7570.0 C57
2020-08-21 18:04:12 S 22 55 56.580 -34 51 21.02 V C57
2020-08-21 18:04:12 s 1 -165063.49 4 +326135.79 240.0 C57
2020-08-21 18:14:12 S 22 55 56.628 -34 52 00.01 V C57
2020-08-21 18:14:12 s 1 -165315.69 6 +325788.86 1270.0 C57
2020-08-21 18:24:12 S 22 55 56.657 -34 52 44.87 V C57
2020-08-21 18:24:12 s 1 -165567.41 2 +325440.97 2110.0 C57
2020-08-21 18:34:12 S 22 55 56.659 -34 53 28.75 V C57
2020-08-21 18:34:12 s 1 -165818.64 0 +325092.12 2740.0 C57
2020-08-21 18:44:12 S 22 55 56.402 -34 54 09.14 V C57
2020-08-21 18:44:12 s 1 -166069.37 8 +324742.30 3170.0 C57
2020-08-21 18:54:12 S 22 55 56.498 -34 54 53.75 V C57
2020-08-21 18:54:12 s 1 -166319.62 5 +324391.51 3410.0 C57
2020-08-21 19:04:12 S 22 55 56.237 -34 55 38.28 V C57
2020-08-21 19:04:12 s 1 -166569.37 9 +324039.76 3440.0 C57
2020-08-21 19:14:12 S 22 55 56.419 -34 56 20.65 V C57
2020-08-21 19:14:12 s 1 -166818.63 9 +323687.04 3270.0 C57
2020-08-21 19:24:12 S 22 55 56.410 -34 56 57.30 V C57
2020-08-21 19:24:12 s 1 -167067.40 4 +323333.35 2890.0 C57
2020-08-21 19:34:12 S 22 55 56.326 -34 57 39.60 V C57
2020-08-21 19:34:12 s 1 -167315.67 1 +322978.70 2310.0 C57
2020-08-21 19:44:12 S 22 55 56.309 -34 58 24.35 V C57
2020-08-21 19:44:12 s 1 -167563.43 9 +322623.08 1530.0 C57
2020-08-21 20:04:12 S 22 55 56.172 -34 59 44.74 V C57
2020-08-21 20:04:12 s 1 -168057.47 3 +321908.93 9350.0 C57
2020-08-21 20:14:12 S 22 55 56.575 -35 00 26.42 V C57
2020-08-21 20:14:12 s 1 -168303.73 5 +321550.40 7950.0 C57
2020-08-21 20:24:12 S 22 55 56.556 -35 01 10.06 V C57
2020-08-21 20:24:12 s 1 -168549.49 2 +321190.90 6340.0 C57
2020-08-21 20:34:12 S 22 55 56.215 -35 01 50.45 V C57
2020-08-21 20:34:12 s 1 -168794.74 2 +320830.42 4530.0 C57
2020-08-21 20:44:12 S 22 55 55.985 -35 02 32.89 V C57
2020-08-21 20:44:12 s 1 -169039.48 4 +320468.98 2510.0 C57
2020-08-21 20:54:12 S 22 55 56.352 -35 03 15.91 V C57
2020-08-21 20:54:12 s 1 -169283.71 6 +320106.57 280.0 C57
2020-08-21 21:04:12 S 22 55 56.345 -35 04 00.77 V C57
2020-08-21 21:04:12 s 1 -169527.43 6 +319743.18 7840.0 C57
2020-08-21 21:14:12 S 22 55 56.436 -35 04 41.88 V C57
2020-08-21 21:14:12 s 1 -169770.64 3 +319378.82 5190.0 C57
2020-08-21 21:24:12 S 22 55 56.400 -35 05 21.26 V C57
2020-08-21 21:24:12 s 1 -170013.33 5 +319013.49 2330.0 C57
2020-08-21 21:34:12 S 22 55 56.258 -35 06 10.04 V C57
2020-08-21 21:34:12 s 1 -170255.51 1 +318647.18 9250.0 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)