WUMaCat

Simbad link	HI Pup
Source publication	Ulaş, B. (2014) - New photometric study of a southern contact binary system: HI Puppis
ADS link	2014NewA...31...56U
Name in Source publication	HI Pup
Orbital period in days (P [d])	0.43257
Mass ratio (q)	0.21
Mass ratio determination	Spectroscopic
Type	A
Has total eclipse?
Has spots?
Has third light?
Has period variation?

Solver	PHOEBE
Orbital period in days (P [d])	0.43257
Mass ratio (q)	0.21
Orbital inclination in degrees (i [^o])	82.2
Fillout (f)	0.2
Primary temperature in Kelvins (T₁ [K])	6500
Secondary temperature in Kelvins (T₂ [K])	6377
Primary polar radius in units of orbital separation (r_1p)	0.4911
Secondary polar radius in units of orbital separation (r_2p)	0.2418
Surface potential (Ω)	2.221

Orbital separation in solar radii (a [R])	2.72
Primary radius in solar units (R₁ [R])	1.44
Secondary radius in solar units (R₂ [R])	0.67
Primary mass in solar units (M₁ [M])	1.21
Secondary mass in solar units (M₂ [M])	0.23
Primary temperature in kelvins (T₁ [K])	6500
Secondary temperature in Kelvins (T₂ [K])	6377
Primary luminosity in solar units (L₁ [L])	3.3
Secondary luminosity in solar units (L₂ [L])	0.7
Distance in parsecs (d [pc])
Age in gigayears (τ [gyr])	4.41

HI Pup