1SWASP J161858.05+261303.5

Simbad link 1SWASP J161858.05+261303.5
Source publication Li, Kai (2020) - The First Light Curve Modeling and Orbital Period Change Investigation of Nine Contact Binaries around the Short-period Cutoff
ADS link 2020AJ....159..189L
Name in Source publication 1SWASP J161858.05+261303.5
Orbital period in days (P [d]) 0.228781
Mass ratio (q) 0.6
Mass ratio determination Photometric
Type W
Has total eclipse?
Has spots?
Has third light?
Has period variation?

Solver WD
Orbital period in days (P [d]) 0.228781
Mass ratio (q) 0.6
Orbital inclination in degrees (i [o]) 50.8
Fillout (f) 0.04
Primary temperature in Kelvins (T1 [K]) 4400
Secondary temperature in Kelvins (T2 [K]) 4578
Primary polar radius in units of orbital separation (r1p) 0.4016
Secondary polar radius in units of orbital separation (r2p) 0.316
Surface potential (Ω) 3.044

Orbital separation in solar radii (a [R]) 1.62
Primary radius in solar units (R1 [R]) 0.69
Secondary radius in solar units (R2 [R]) 0.54
Primary mass in solar units (M1 [M]) 0.68
Secondary mass in solar units (M2 [M]) 0.4
Primary temperature in kelvins (T1 [K]) 4400
Secondary temperature in Kelvins (T2 [K]) 4578
Primary luminosity in solar units (L1 [L]) 0.23
Secondary luminosity in solar units (L2 [L]) 0.14
Distance in parsecs (d [pc])
Age in gigayears (τ [gyr]) 6.66

Orbital period in days (P [d]) 0.228781
Monotonic period variation in seconds per year (dPdt [s/y]) -0.023328
Cyclic period variation in years (Pc [y])

Designation Gaia DR2 1303664896668956928
RA 244:44:25.77444
DEC 26:13:42.002616
l 44.21747422
b 43.97493037
G magnitude 18.537762
G_bp magnitude 19.442621
G_rp magnitude 17.216534
Radial velocity [km/s]
Parallax 2.21200023
Distance [pc] 0.45208
Temperature [K]
Radius [R]
Luminosity [L]

Simbad link 1SWASP J161858.05+261303.5
J magnitude 12.33
H magnitude 11.796
K magnitude 11.698
Johnson_U magnitude 13.55
Johnson_B magnitude 15.37
Johnson_V magnitude 14.36
Johnson_R magnitude 13.95
Johnson_I magnitude
Sloan_u magnitude
Sloan_g magnitude 14.81
Sloan_r magnitude 13.95
Sloan_i magnitude 13.55
Sloan_z magnitude

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