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 2023-08-12 CPHB 54 in 4.10 hrs 4239

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=2460168.882 +/- 0.02,Rp/R*=0.177 +/- 0.016,a/R*=4.46 +/- 1.5,Am1=1.113 +/- 0.023,Am2=-0.1 +/- 0.12
Details Qatar-4 Qatar-4 b 2023-11-05 CPHB 69 in 3.69 hrs 4968

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=2460253.718 +/- 0.019,Rp/R*=0.166 +/- 0.024,a/R*=11.29 +/- 2.2,Am1=0.91 +/- 0.025,Am2=0.084 +/- 0.083