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 06:54:12 S 22 56 09.602 -30 46 12.54 V C57
2020-08-19 06:54:12 s 1 -53889.784 0 +390522.25 1090.0 C57
2020-08-19 07:04:12 S 22 56 09.895 -30 46 52.43 V C57
2020-08-19 07:04:12 s 1 -54242.612 0 +390503.50 5130.0 C57
2020-08-19 07:14:12 S 22 56 09.538 -30 47 31.52 V C57
2020-08-19 07:14:12 s 1 -54595.319 0 +390483.83 9120.0 C57
2020-08-19 07:34:12 S 22 56 09.427 -30 48 56.23 V C57
2020-08-19 07:34:12 s 1 -55300.369 0 +390441.70 6940.0 C57
2020-08-19 07:44:12 S 22 56 09.458 -30 49 36.73 V C57
2020-08-19 07:44:12 s 1 -55652.709 0 +390419.24 760.0 C57
2020-08-19 07:54:12 S 22 56 09.319 -30 50 19.32 V C57
2020-08-19 07:54:12 s 1 -56004.926 0 +390395.86 4520.0 C57
2020-08-19 08:04:12 S 22 56 09.334 -30 50 59.46 V C57
2020-08-19 08:04:12 s 1 -56357.017 0 +390371.54 8230.0 C57
2020-08-19 08:14:12 S 22 56 09.108 -30 51 39.42 V C57
2020-08-19 08:14:12 s 1 -56708.983 0 +390346.30 1870.0 C57
2020-08-19 08:24:12 S 22 56 09.142 -30 52 21.97 V C57
2020-08-19 08:24:12 s 1 -57060.823 0 +390320.13 5460.0 C57
2020-08-19 08:34:12 S 22 56 08.940 -30 53 03.59 V C57
2020-08-19 08:34:12 s 1 -57412.535 0 +390293.04 9000.0 C57
2020-08-19 08:44:12 S 22 56 08.962 -30 53 41.60 V C57
2020-08-19 08:44:12 s 1 -57764.119 0 +390265.01 2470.0 C57
2020-08-19 08:54:12 S 22 56 08.918 -30 54 24.23 V C57
2020-08-19 08:54:12 s 1 -58115.574 0 +390236.06 5880.0 C57
2020-08-19 09:04:12 S 22 56 08.993 -30 55 04.30 V C57
2020-08-19 09:04:12 s 1 -58466.899 0 +390206.19 9240.0 C57
2020-08-19 09:14:12 S 22 56 08.822 -30 55 41.20 V C57
2020-08-19 09:14:12 s 1 -58818.094 0 +390175.39 2530.0 C57
2020-08-19 09:24:12 S 22 56 08.861 -30 56 26.88 V C57
2020-08-19 09:24:12 s 1 -59169.157 0 +390143.66 5760.0 C57
2020-08-19 09:34:12 S 22 56 08.789 -30 57 06.08 V C57
2020-08-19 09:34:12 s 1 -59520.088 0 +390111.01 8940.0 C57
2020-08-19 09:44:12 S 22 56 08.503 -30 57 48.56 V C57
2020-08-19 09:44:12 s 1 -59870.885 0 +390077.43 2050.0 C57
2020-08-19 09:54:12 S 22 56 08.630 -30 58 29.32 V C57
2020-08-19 09:54:12 s 1 -60221.549 0 +390042.93 5100.0 C57
2020-08-19 10:04:12 S 22 56 08.460 -30 59 06.68 V C57
2020-08-19 10:04:12 s 1 -60572.078 0 +390007.50 8090.0 C57
2020-08-19 10:14:12 S 22 56 08.287 -30 59 50.24 V C57
2020-08-19 10:14:12 s 1 -60922.472 0 +389971.15 1020.0 C57
2020-08-19 10:24:12 S 22 56 08.587 -31 00 29.20 V C57
2020-08-19 10:24:12 s 1 -61272.729 0 +389933.87 3880.0 C57
2020-08-19 10:34:12 S 22 56 08.491 -31 01 11.39 V C57
2020-08-19 10:34:12 s 1 -61622.849 0 +389895.67 6680.0 C57
2020-08-19 10:44:12 S 22 56 08.110 -31 01 52.10 V C57
2020-08-19 10:44:12 s 1 -61972.831 0 +389856.55 9420.0 C57
2020-08-19 10:54:12 S 22 56 08.263 -31 02 33.86 V C57
2020-08-19 10:54:12 s 1 -62322.674 0 +389816.50 2090.0 C57
2020-08-19 11:04:12 S 22 56 08.131 -31 03 15.08 V C57
2020-08-19 11:04:12 s 1 -62672.377 0 +389775.53 4710.0 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)