USNO-A2.0 1200-18678842

Simbad link	USNO-A2.0 1200-18678842
Source publication	Elkhateeb, M. M. (2015) - Photometric solution and evolutionary state for the newly discovered W UMa systems GSC-02137-0222 and USNO-A2.0 1200-18678842
ADS link	2015NewA...34...47E
Name in Source publication	USNO-A2.0 1200-18678842
Orbital period in days (P [d])	0.442868
Mass ratio (q)	0.3
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])	0.442868
Mass ratio (q)	0.3
Orbital inclination in degrees (i [^o])	53.2
Fillout (f)	0
Primary temperature in Kelvins (T₁ [K])	5767
Secondary temperature in Kelvins (T₂ [K])	5562
Primary polar radius in units of orbital separation (r_1p)	0.456
Secondary polar radius in units of orbital separation (r_2p)	0.2614
Surface potential (Ω)	2.466

Orbital separation in solar radii (a [R])	2.76
Primary radius in solar units (R₁ [R])	1.2
Secondary radius in solar units (R₂ [R])	1.14
Primary mass in solar units (M₁ [M])	1.11
Secondary mass in solar units (M₂ [M])	0.33
Primary temperature in kelvins (T₁ [K])	5767
Secondary temperature in Kelvins (T₂ [K])	5562
Primary luminosity in solar units (L₁ [L])	1.44
Secondary luminosity in solar units (L₂ [L])	1.11
Distance in parsecs (d [pc])
Age in gigayears (τ [gyr])	3.64

Basic Info