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 20:54:12 S 22 55 58.274 -36 45 05.65 V C57
2020-08-22 20:54:12 s 1 -198178.39 0 +257451.82 4410.0 C57
2020-08-22 21:04:12 S 22 55 58.414 -36 45 46.01 V C57
2020-08-22 21:04:12 s 1 -198327.76 0 +256941.43 3610.0 C57
2020-08-22 21:14:12 S 22 55 58.354 -36 46 23.74 V C57
2020-08-22 21:14:12 s 1 -198476.29 7 +256429.96 2470.0 C57
2020-08-22 21:24:12 S 22 55 58.498 -36 47 09.20 V C57
2020-08-22 21:24:12 s 1 -198623.99 9 +255917.41 990.0 C57
2020-08-22 21:34:12 S 22 55 58.512 -36 47 49.92 V C57
2020-08-22 21:34:12 s 1 -198770.86 2 +255403.77 9170.0 C57
2020-08-22 21:44:12 S 22 55 58.212 -36 48 31.93 V C57
2020-08-22 21:44:12 s 1 -198916.88 3 +254889.06 7010.0 C57
2020-08-22 21:54:12 S 22 55 58.445 -36 49 22.73 V C57
2020-08-22 21:54:12 s 1 -199062.06 0 +254373.26 4500.0 C57
2020-08-22 22:04:12 S 22 55 58.524 -36 49 58.33 V C57
2020-08-22 22:04:12 s 1 -199206.38 8 +253856.38 1650.0 C57
2020-08-22 22:14:12 S 22 55 58.642 -36 50 44.16 V C57
2020-08-22 22:14:12 s 1 -199349.86 6 +253338.41 8450.0 C57
2020-08-22 22:24:12 S 22 55 58.495 -36 51 21.28 V C57
2020-08-22 22:24:12 s 1 -199492.48 9 +252819.35 4910.0 C57
2020-08-22 22:34:12 S 22 55 58.862 -36 52 02.32 V C57
2020-08-22 22:34:12 s 1 -199634.25 5 +252299.21 1020.0 C57
2020-08-22 22:44:12 S 22 55 58.543 -36 52 58.91 V C57
2020-08-22 22:44:12 s 1 -199775.16 0 +251777.98 6780.0 C57
2020-08-22 22:54:12 S 22 55 58.750 -36 53 33.68 V C57
2020-08-22 22:54:12 s 1 -199915.20 2 +251255.66 2190.0 C57
2020-08-22 23:14:12 S 22 55 58.639 -36 54 58.75 V C57
2020-08-22 23:14:12 s 1 -200192.68 2 +250207.74 1940.0 C57
2020-08-23 00:34:12 S 22 55 59.004 -37 00 41.44 V C57
2020-08-23 00:34:12 s 1 -201267.40 4 +245972.31 6680.0 C57
2020-08-23 00:44:12 S 22 55 58.786 -37 01 25.68 V C57
2020-08-23 00:44:12 s 1 -201397.73 0 +245437.94 8140.0 C57
2020-08-23 01:04:12 S 22 55 58.968 -37 02 47.98 V C57
2020-08-23 01:04:12 s 1 -201655.66 9 +244365.89 9950.0 C57
2020-08-23 01:14:12 S 22 55 59.191 -37 03 34.31 V C57
2020-08-23 01:14:12 s 1 -201783.27 5 +243828.22 310.0 C57
2020-08-23 01:24:12 S 22 55 59.086 -37 04 12.22 V C57
2020-08-23 01:24:12 s 1 -201909.96 7 +243289.43 290.0 C57
2020-08-23 01:34:12 S 22 55 59.174 -37 04 53.69 V C57
2020-08-23 01:34:12 s 1 -202035.74 3 +242749.55 9900.0 C57
2020-08-23 01:44:12 S 22 55 58.891 -37 05 37.64 V C57
2020-08-23 01:44:12 s 1 -202160.59 8 +242208.55 9140.0 C57
2020-08-23 01:54:12 S 22 55 59.405 -37 06 21.28 V C57
2020-08-23 01:54:12 s 1 -202284.52 9 +241666.45 8000.0 C57
2020-08-23 02:04:12 S 22 55 59.407 -37 07 05.45 V C57
2020-08-23 02:04:12 s 1 -202407.53 2 +241123.24 6480.0 C57
2020-08-23 02:14:12 S 22 55 59.338 -37 07 49.08 V C57
2020-08-23 02:14:12 s 1 -202529.60 4 +240578.92 4580.0 C57
2020-08-23 02:24:12 S 22 55 59.390 -37 08 35.16 V C57
2020-08-23 02:24:12 s 1 -202650.74 2 +240033.48 2310.0 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)