FT Lup

Simbad link FT Lup
Source publication Siwak, M. (2010) - A Study of Contact Binaries with Large Temperature Differences between Components
ADS link 2010AcA....60..305S
Name in Source publication FT Lup
Orbital period in days (P [d]) 0.47008
Mass ratio (q) 0.44
Mass ratio determination Spectroscopic
Type A
Has total eclipse?
Has spots?
Has third light?
Has period variation?

Solver WD
Orbital period in days (P [d]) 0.47008
Mass ratio (q) 0.44
Orbital inclination in degrees (i [o]) 89.3
Fillout (f) 0.13
Primary temperature in Kelvins (T1 [K]) 6700
Secondary temperature in Kelvins (T2 [K]) 4651
Primary polar radius in units of orbital separation (r1p) 0.4312
Secondary polar radius in units of orbital separation (r2p) 0.2964
Surface potential (Ω) 2.7231

Orbital separation in solar radii (a [R]) 3.54
Primary radius in solar units (R1 [R]) 1.64
Secondary radius in solar units (R2 [R]) 1.13
Primary mass in solar units (M1 [M]) 1.87
Secondary mass in solar units (M2 [M]) 0.82
Primary temperature in kelvins (T1 [K]) 6700
Secondary temperature in Kelvins (T2 [K]) 4651
Primary luminosity in solar units (L1 [L]) 4.86
Secondary luminosity in solar units (L2 [L]) 0.54
Distance in parsecs (d [pc])
Age in gigayears (τ [gyr])

Orbital period in days (P [d]) 0.47008
Monotonic period variation in seconds per year (dPdt [s/y]) 0.007576
Cyclic period variation in years (Pc [y])
Period study Lipari, S. L. (1983) - FT Lupi: Study of the Period and Light Curve
ADS link 1983IBVS.2422....1L

Designation Gaia DR2 5908602761263951616
RA 224:58:09.76728
DEC -43:01:00.262524
l 326.5489491
b 13.92171991
G magnitude 9.815502
G_bp magnitude 10.0659895
G_rp magnitude 9.441496
Radial velocity [km/s]
Parallax 4.499429734
Distance [pc] 0.22225
Temperature [K] 6412.447
Radius [R] 1.6746223
Luminosity [L] 4.271924

Simbad link FT Lup
J magnitude 9.012
H magnitude 8.762
K magnitude 8.696
Johnson_U magnitude
Johnson_B magnitude 10.27
Johnson_V magnitude 9.82
Johnson_R magnitude
Johnson_I magnitude
Sloan_u magnitude
Sloan_g magnitude 9.8155
Sloan_r magnitude
Sloan_i magnitude
Sloan_z magnitude

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