LS Del

Simbad link LS Del
Source publication Deb, Sukanta (2011) - Physical parameters of 62 eclipsing binary stars using the All Sky Automated Survey-3 data - I
ADS link 2011MNRAS.412.1787D
Name in Source publication 205710+1938.8
Orbital period in days (P [d]) 0.363842
Mass ratio (q) 0.37
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]) 0.363842
Mass ratio (q) 0.37
Orbital inclination in degrees (i [o]) 45.2
Fillout (f) 0.2
Primary temperature in Kelvins (T1 [K]) 6192
Secondary temperature in Kelvins (T2 [K]) 6250
Primary polar radius in units of orbital separation (r1p) 0.4466
Secondary polar radius in units of orbital separation (r2p) 0.2868
Surface potential (Ω) 2.5814

Orbital separation in solar radii (a [R]) 2.57
Primary radius in solar units (R1 [R]) 1.23
Secondary radius in solar units (R2 [R]) 0.79
Primary mass in solar units (M1 [M]) 1.25
Secondary mass in solar units (M2 [M]) 0.47
Primary temperature in kelvins (T1 [K]) 6192
Secondary temperature in Kelvins (T2 [K]) 6250
Primary luminosity in solar units (L1 [L]) 1.99
Secondary luminosity in solar units (L2 [L]) 0.93
Distance in parsecs (d [pc])
Age in gigayears (τ [gyr]) 3.64

Orbital period in days (P [d]) 0.363842
Monotonic period variation in seconds per year (dPdt [s/y]) 0.01944
Cyclic period variation in years (Pc [y])
Period study Qian, Shengbang (2001) - A possible relation between the period change and the mass ratio for W-type contact binaries
ADS link 2001MNRAS.328..635Q

Designation Gaia DR2 1813514756363926400
RA 314:17:36.68316
DEC 19:39:00.556056
l 66.00226419
b -16.48576265
G magnitude 8.581913
G_bp magnitude 8.868897
G_rp magnitude 8.152515
Radial velocity [km/s]
Parallax 10.03999986
Distance [pc] 0.099602
Temperature [K] 6086.5073
Radius [R] 1.4747406
Luminosity [L] 2.689048

Simbad link LS Del
J magnitude 7.605
H magnitude 7.358
K magnitude 7.297
Johnson_U magnitude 8.054
Johnson_B magnitude 9.178
Johnson_V magnitude 8.722
Johnson_R magnitude 8.3
Johnson_I magnitude
Sloan_u magnitude
Sloan_g magnitude 8.5819
Sloan_r magnitude 8.3
Sloan_i magnitude 8.054
Sloan_z magnitude

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