AAVSO: American Association of Variable Star Observers
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Star Exoplanet Observation Date Primary Observer Measurements reference
Details Qatar-4 Qatar-4 b 2020-11-06 GHUA 29 in 1.72 hrs 3076

Detrend Parameters

AIRMASS,AIRMASS CORRECTION FUNCTION

Secondary Observers

MOBS

Priors

Period=1.8053663 +/- 1.5e-06,Rp/R*=0.1472 +/- 0.0011,a/R*=7.11 +/- 0.48,inc=87.5 +/- 1.6,ecc=0.0,u0=1.564 +/- 0.011,u1=-2.7 +/- 0.047,u2=3.363 +/- 0.063,u3=-1.227 +/- 0.027

Results

Tc=2459159.746 +/- 0.029,Rp/R*=0.174 +/- 0.053,a/R*=8.21 +/- 4.09,Am1=1.21 +/- 0.11,Am2=-0.14 +/- 0.61
Details Qatar-4 Qatar-4 b 2022-11-27 GHUA 82 in 4.44 hrs 4207

Detrend Parameters

AIRMASS,AIRMASS CORRECTION FUNCTION

Secondary Observers

MOBS

Priors

Period=1.8053663 +/- 1.5e-06,Rp/R*=0.1472 +/- 0.0011,a/R*=7.11 +/- 0.48,inc=87.5 +/- 1.6,ecc=0.0,u0=1.563 +/- 0.011,u1=-2.699 +/- 0.047,u2=3.363 +/- 0.063,u3=-1.227 +/- 0.027

Results

Tc=2459910.7329 +/- 0.0085,Rp/R*=0.158 +/- 0.017,a/R*=6.37 +/- 1.48,Am1=1.026 +/- 0.026,Am2=-0.017 +/- 0.023