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 2020-07-26 FMAA 59 in 3.12 hrs 409

Detrend Parameters

AIRMASS,AIRMASS CORRECTION FUNCTION

Secondary Observers

Priors

Period=1.8053564 +/- 4.2e-06,a/R*=7.11,inc=87.5,ecc=0.0,u1=0.5227658,u2=0.18112906

Results

Tc=2459056.78693095 +/- 0.006572,Rp/R*=0.140711 +/- 0.022906,Am1=0.49141 +/- 0.00732,Am2=0.01356 +/- 0.01168
Details Qatar-4 Qatar-4 b 2022-12-26 FMAA 74 in 3.78 hrs 2267

Detrend Parameters

AIRMASS,AIRMASS CORRECTION FUNCTION

Secondary Observers

MOBS

Priors

Period=1.8053663 +/- 1.5e-06,Rp/R*=0.150997 +/- 3.7e-05,a/R*=7.11 +/- 0.48,inc=87.5 +/- 1.6,ecc=0.0,u0=1.856 +/- 0.014,u1=-3.273 +/- 0.059,u2=3.759 +/- 0.078,u3=-1.342 +/- 0.033

Results

Tc=2459939.607 +/- 0.024,Rp/R*=0.169 +/- 0.031,a/R*=5.92 +/- 2.19,Am1=1.145 +/- 0.019,Am2=-0.107 +/- 0.073