517681 (2015 DE198)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5824731052 ± 7.13e-09
Semi-major axis (a)2.0638151766 AU ± 2.40e-09
Inclination (i)12.24158619° ± 2.00e-06
Long. of Asc. Node (Ω)33.20634214° ± 3.19e-06
Arg. of Perihelion (ω)218.16964482° ± 4.33e-06
Mean Anomaly (M)183.48642443° ± 4.92e-07
Mean Motion (n)0.3324344885°/day ± 5.79e-10
Perihelion dist (q)0.86169834 AU ± 1.48e-08
Aphelion dist (Q)3.26593201 AU ± 1.52e-08
Orbital Period2.96487373 yr ± 5.17e-09
Physical Parameters
H (abs. magnitude)18.93
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.295″
Uncertainty0
Orbit TypeApollo
MOID0.042036 AU
Observations Used965
Radar Obs Used4
Oppositions47
Arc Total1953-2024
First Observation Used1953-03-08
Last Observation Used2024-10-07
Observations (1458)
Date Type RA Dec Mag Band Observatory
2018-08-27 16:44:41 s 1 +10134.804 0 +345310.66 5430.0 C57
2018-08-27 17:14:41 S 00 25 49.699 -43 10 52.79 V C57
2018-08-27 18:14:41 S 00 25 36.895 -43 09 21.28 V C57
2018-08-27 19:14:41 S 00 25 24.492 -43 07 57.97 V C57
2018-08-27 20:14:41 S 00 25 13.517 -43 06 31.68 V C57
2018-08-27 20:44:41 S 00 25 07.123 -43 05 49.63 V C57
2018-08-27 21:14:41 S 00 25 01.008 -43 05 04.31 V C57
2018-08-27 21:44:41 S 00 24 54.806 -43 04 19.09 V C57
2018-08-27 22:14:41 S 00 24 48.358 -43 03 28.87 V C57
2018-08-27 23:14:41 S 00 24 35.983 -43 02 02.04 V C57
2018-08-28 00:14:41 S 00 24 23.827 -43 00 32.29 V C57
2018-08-28 00:44:41 S 00 24 17.606 -42 59 45.67 V C57
2018-08-28 02:44:41 S 00 23 54.026 -42 56 52.15 V C57
2018-08-28 02:44:41 s 1 -12887.351 0 +357565.24 4650.0 C57
2018-08-28 04:14:41 S 00 23 36.103 -42 54 41.29 V C57
2018-08-28 04:14:41 s 1 -16339.956 0 +359060.67 8480.0 C57
2018-08-28 05:14:41 S 00 23 24.197 -42 53 09.89 V C57
2018-08-28 05:14:41 s 1 -18640.129 0 +360008.94 1160.0 C57
2018-08-28 05:44:41 S 00 23 18.847 -42 52 31.33 V C57
2018-08-28 05:44:41 s 1 -19789.660 0 +360468.54 7170.0 C57
2018-08-28 07:14:41 S 00 23 01.027 -42 50 18.67 V C57
2018-08-28 07:14:41 s 1 -23235.684 0 +361789.45 6350.0 C57
2018-08-28 09:44:41 S 00 22 30.955 -42 46 29.68 V C57
2018-08-28 09:44:41 s 1 -28968.805 0 +363799.27 4350.0 C57
2018-08-28 10:14:41 S 00 22 24.667 -42 45 48.82 V C57
2018-08-28 10:14:41 s 1 -30113.642 0 +364172.67 8140.0 C57
2018-08-28 12:44:41 S 00 21 55.541 -42 42 04.03 V C57
2018-08-28 12:44:41 s 1 -35827.397 0 +365897.92 8750.0 C57
2018-08-28 13:14:41 S 00 21 50.537 -42 41 22.78 V C57
2018-08-28 13:14:41 s 1 -36967.876 0 +366214.75 6530.0 C57
2018-08-28 13:44:41 S 00 21 44.477 -42 40 36.37 V C57
2018-08-28 13:44:41 s 1 -38107.535 0 +366522.22 3960.0 C57
2018-08-28 14:44:41 S 00 21 33.149 -42 39 11.74 V C57
2018-08-28 14:44:41 s 1 -40384.293 0 +367109.17 8550.0 C57
2018-08-28 16:14:41 S 00 21 15.504 -42 36 55.30 V C57
2018-08-28 16:14:41 s 1 -43792.637 0 +367919.83 2470.0 C57
2018-08-28 17:44:41 S 00 20 58.236 -42 34 41.63 V C57
2018-08-28 17:44:41 s 1 -47192.218 0 +368647.21 3170.0 C57
2018-08-28 20:14:41 S 00 20 28.992 -42 31 01.27 V C57
2018-08-28 20:14:41 s 1 -52836.861 0 +369675.71 2380.0 C57
2018-08-28 22:44:41 S 00 20 00.984 -42 27 10.55 V C57
2018-08-28 22:44:41 s 1 -58452.164 0 +370476.22 5480.0 C57
2018-08-29 01:14:41 S 00 19 32.693 -42 23 28.32 V C57
2018-08-29 01:14:41 s 1 -64035.076 0 +371050.68 3640.0 C57
2018-08-29 04:44:41 S 00 18 54.137 -42 18 20.52 V C57
2018-08-29 04:44:41 s 1 -71791.032 0 +371478.63 550.0 C57
2018-08-29 06:44:41 S 00 18 31.841 -42 15 24.34 V C57
2018-08-29 06:44:41 s 1 -76188.740 0 +371527.68 7300.0 C57
2018-08-29 07:14:41 S 00 18 26.071 -42 14 36.38 V C57
2018-08-29 07:14:41 s 1 -77284.039 0 +371517.86 2580.0 C57
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2024-04-12 08:00:00 390922.774 2 Hz 8560 -14 -14
2024-04-13 00:30:00 325842.885 2 Hz 8560 -14 -14
2024-04-13 01:40:00 51160316.43 2 us 8560 -14 -14
2024-04-13 02:30:00 51049208.72 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)