WUMaCat

Simbad link	BW Dra
Source publication	Kaluzny, J. (1986) - The combined photometric and spectroscopic solutions for contact binaries BV DRA and BW Dra.
ADS link	1986AJ.....92..666K
Name in Source publication	BW Dra
Orbital period in days (P [d])	0.292167
Mass ratio (q)	0.28
Mass ratio determination	Spectroscopic
Type	W
Has total eclipse?
Has spots?
Has third light?
Has period variation?

Solver	WD
Orbital period in days (P [d])	0.292167
Mass ratio (q)	0.28
Orbital inclination in degrees (i [^o])	74.4
Fillout (f)	0.14
Primary temperature in Kelvins (T₁ [K])	5980
Secondary temperature in Kelvins (T₂ [K])	6164
Primary polar radius in units of orbital separation (r_1p)	0.4666
Secondary polar radius in units of orbital separation (r_2p)	0.2618
Surface potential (Ω)	2.397

Orbital separation in solar radii (a [R])	1.36
Primary radius in solar units (R₁ [R])	0.98
Secondary radius in solar units (R₂ [R])	0.55
Primary mass in solar units (M₁ [M])	0.92
Secondary mass in solar units (M₂ [M])	0.26
Primary temperature in kelvins (T₁ [K])	5980
Secondary temperature in Kelvins (T₂ [K])	6164
Primary luminosity in solar units (L₁ [L])	1.1
Secondary luminosity in solar units (L₂ [L])	0.39
Distance in parsecs (d [pc])
Age in gigayears (τ [gyr])	5.25

BW Dra