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] | 222.250387 |
| 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 |