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What to observe ?
Eclipsing binaries minima
Exoplanetary transits
Projects and campaigns
EccentriCAT - DEEP (Citizen Astronomy Timing of Eccentric Eclipses) (
1/31/2026 - 1/31/2031)
EccentriCAT - LITE (Citizen Astronomy Timing of Eccentric Eclipses) (
1/31/2026 - 1/31/2031)
Star catalog
All objects
Eclipsing binaries
Intrinsic variables
CzeV catalog
Exoplanet catalog (ETD)
OEJV
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List
New observation
2/2/2026
V0521 Mon
2
Michal Haltuf, Gemini observatory, 2/2/2026
AG Optical iDK 12.5", 318/2128 mm + ASI6200MM + Skywatcher EQ8-R Pro
AG Optical iDK 12.5", 318/2128 mm + ASI6200MM + Skywatcher EQ8-R Pro
missed secondary minimum; comes earlier than prediction
. . .
New observation
2/16/2017
V0521 Mon
2
Martin Mašek, Liberec, 2/15/2017
NWT 150/600 + CCD MII G2-1600 + comacorector
NWT 150/600 + CCD MII G2-1600 + comacorector
secondary minimum
. . .
New minimum
2/16/2017
V0521 Mon
2
Martin Mašek, Liberec, 2/15/2017
NWT 150/600 + CCD MII G2-1600 + comacorector
NWT 150/600 + CCD MII G2-1600 + comacorector
----- EBFit result: -----
Tmin = 2457800.29861
Error (1 sigma): +0.00029/-0.00028 (Bootstrapping), +0.00021/-0.00021 (Prayer bead), +0.00019/-0.00019 (LSM)
Error (95% CI): +0.00058/-0.00055 (Bootstrapping), +0.00045/-0.00043 (Prayer bead)
LSM: chi^2 = 228.5, n_freedom = 91
. . .
New star
6/1/1996
V0521 Mon
2
admin
RA: 103.9749999900, DE: -0.2399999990, MAG (max): 10.000 (P), EA
. . .
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