WUMaCat

Simbad link	ER Cep
Source publication	Chen, Xiaodian (2016) - Physical Parameter Study of Eight W Ursae Majoris-type Contact Binaries in NGC 188
ADS link	2016AJ....152..129C
Name in Source publication	V3
Orbital period in days (P [d])	0.2857
Mass ratio (q)	0.63
Mass ratio determination	Photometric
Type	A
Has total eclipse?
Has spots?
Has third light?
Has period variation?

Solver	WD
Orbital period in days (P [d])	0.2857
Mass ratio (q)	0.63
Orbital inclination in degrees (i [^o])	79.7
Fillout (f)	0.08
Primary temperature in Kelvins (T₁ [K])	5505
Secondary temperature in Kelvins (T₂ [K])	5383
Primary polar radius in units of orbital separation (r_1p)	0.3992
Secondary polar radius in units of orbital separation (r_2p)	0.3225
Surface potential (Ω)	3.09

Orbital separation in solar radii (a [R])	2.14
Primary radius in solar units (R₁ [R])	0.91
Secondary radius in solar units (R₂ [R])	0.74
Primary mass in solar units (M₁ [M])	1
Secondary mass in solar units (M₂ [M])	0.63
Primary temperature in kelvins (T₁ [K])	5505
Secondary temperature in Kelvins (T₂ [K])	5383
Primary luminosity in solar units (L₁ [L])	0.8
Secondary luminosity in solar units (L₂ [L])	0.48
Distance in parsecs (d [pc])
Age in gigayears (τ [gyr])

ER Cep