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
2018-08-25 19:14:41 s 1 +107097.92 2 +233216.23 0.118 C57
2018-08-25 19:44:41 S 00 35 48.226 -44 15 43.09 V C57
2018-08-25 19:44:41 s 1 +106203.27 7 +235018.78 0.174 C57
2018-08-25 20:14:41 S 00 35 41.083 -44 15 06.80 V C57
2018-08-25 20:14:41 s 1 +105302.13 9 +236807.11 0.026 C57
2018-08-25 21:14:41 S 00 35 27.602 -44 13 44.22 V C57
2018-08-25 21:14:41 s 1 +103480.89 8 +240341.36 0.461 C57
2018-08-25 22:14:41 S 00 35 12.324 -44 12 13.97 V C57
2018-08-25 22:14:41 s 1 +101635.19 4 +243819.46 0.095 C57
2018-08-25 22:44:41 S 00 35 05.873 -44 11 37.07 V C57
2018-08-25 22:44:41 s 1 +100703.47 0 +245537.60 0.191 C57
2018-08-26 00:14:41 S 00 34 45.161 -44 09 34.38 V C57
2018-08-26 00:14:41 s 1 +97874.202 0 +250609.06 0.536 C57
2018-08-26 00:44:41 S 00 34 37.433 -44 08 49.88 V C57
2018-08-26 00:44:41 s 1 +96920.122 0 +252272.09 0.259 C57
2018-08-26 01:44:41 S 00 34 24.307 -44 07 25.25 V C57
2018-08-26 01:44:41 s 1 +94996.127 0 +255557.30 5620.0 C57
2018-08-26 05:14:41 S 00 33 36.506 -44 02 36.67 V C57
2018-08-26 05:14:41 s 1 +88106.653 0 +266632.45 110.0 C57
2018-08-26 06:14:41 S 00 33 22.260 -44 01 08.51 V C57
2018-08-26 06:14:41 s 1 +86097.013 0 +269677.69 8910.0 C57
2018-08-26 06:44:41 S 00 33 15.434 -44 00 23.94 V C57
2018-08-26 06:44:41 s 1 +85085.784 0 +271180.74 3000.0 C57
2018-08-26 08:14:41 S 00 32 55.793 -43 58 25.25 V C57
2018-08-26 08:14:41 s 1 +82027.509 0 +275612.18 1280.0 C57
2018-08-26 10:14:41 S 00 32 28.238 -43 55 34.18 V C57
2018-08-26 10:14:41 s 1 +77895.555 0 +281341.38 4870.0 C57
2018-08-26 10:44:41 S 00 32 21.674 -43 54 54.32 V C57
2018-08-26 10:44:41 s 1 +76853.415 0 +282741.99 6770.0 C57
2018-08-26 12:14:41 S 00 32 01.447 -43 52 40.58 V C57
2018-08-26 12:14:41 s 1 +73706.267 0 +286868.53 5540.0 C57
2018-08-26 12:44:41 S 00 31 54.814 -43 52 01.38 V C57
2018-08-26 12:44:41 s 1 +72650.555 0 +288219.10 4570.0 C57
2018-08-26 13:14:41 S 00 31 48.746 -43 51 21.02 V C57
2018-08-26 13:14:41 s 1 +71591.633 0 +289557.30 4170.0 C57
2018-08-26 13:44:41 S 00 31 42.192 -43 50 39.66 V C57
2018-08-26 13:44:41 s 1 +70529.571 0 +290883.15 4850.0 C57
2018-08-26 14:14:41 S 00 31 35.371 -43 49 58.66 V C57
2018-08-26 14:14:41 s 1 +69464.440 0 +292196.70 7100.0 C57
2018-08-26 15:14:41 S 00 31 21.341 -43 48 27.43 V C57
2018-08-26 15:14:41 s 1 +67325.243 0 +294787.13 8250.0 C57
2018-08-27 11:44:41 S 00 26 56.842 -43 18 50.00 V C57
2018-08-27 11:44:41 s 1 +21604.486 0 +337650.95 5580.0 C57
2018-08-27 12:44:41 S 00 26 45.403 -43 17 30.41 V C57
2018-08-27 12:44:41 s 1 +19315.625 0 +339266.75 2450.0 C57
2018-08-27 14:44:41 S 00 26 21.127 -43 14 35.34 V C57
2018-08-27 14:44:41 s 1 +14729.692 0 +342372.08 1480.0 C57
2018-08-27 16:14:41 S 00 26 01.507 -43 12 18.25 V C57
2018-08-27 16:14:41 s 1 +11284.238 0 +344591.55 6480.0 C57
2018-08-27 16:44:41 S 00 25 55.075 -43 11 33.40 V 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)