BK Oct
| Simbad link | BK Oct |
|---|---|
| Source publication | Poro, A. (2025) - BSN-I: the first in-depth photometric study of seven total-eclipse contact binary systems |
| ADS link | 2025MNRAS.537.3160P |
| Name in Source publication | BK Oct |
| Orbital period in days (P [d]) | 0.368514 |
| Mass ratio (q) | 5.95 |
| Mass ratio determination | Photometric |
| Temperature determination | Unknown |
| Type | W |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? | |
| Search TESS catalog of Eclipsing Binaries | TIC 466684656 |
| Solver | PHOEBE2 |
|---|---|
| Orbital period in days (P [d]) | 0.368514 |
| Mass ratio (q) | 5.95 |
| Orbital inclination in degrees (i [o]) | 85.1 |
| Fillout (f) | 0.29 |
| Primary temperature in Kelvins (T1 [K]) | 5724 |
| Secondary temperature in Kelvins (T2 [K]) | 5646 |
| Primary polar radius in units of orbital separation (r1p) | |
| Secondary polar radius in units of orbital separation (r2p) | |
| Surface potential (Ω) | 10.15 |
| Orbital separation in solar radii (a [R]) | 2.55 |
|---|---|
| Primary radius in solar units (R1 [R]) | 0.64 |
| Secondary radius in solar units (R2 [R]) | 1.4 |
| Primary mass in solar units (M1 [M]) | 0.24 |
| Secondary mass in solar units (M2 [M]) | 1.41 |
| Primary temperature in kelvins (T1 [K]) | 5724 |
| Secondary temperature in Kelvins (T2 [K]) | 5646 |
| Primary luminosity in solar units (L1 [L]) | 0.4 |
| Secondary luminosity in solar units (L2 [L]) | 1.8 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) |
| Orbital period in days (P [d]) | 0.368514 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | -0.042595 |
| Cyclic period variation in years (Pc [y]) |
| Host | Longitude λ [o] | Latitude β [o] | Angular radius σ [o] | Temperature contrast Tspot/Tstar |
|---|---|---|---|---|
| Secondary | 299 | 15 | 0.82 |
| Designation | Gaia DR3 6367227241808651904 |
|---|---|
| RA | 295:45:57.93713 |
| DEC | -75:08:30.351353 |
| l | 319.9377349670693 |
| b | -29.477303691001612 |
| G [mag] | 13.961001 |
| G_bp [mag] | 14.289916 |
| G_rp [mag] | 13.471373 |
| Parallax | 0.9616370248904359 |
| Distance [pc] | 992.5475 |
| Temperature [K] | 5721.6104 |
| Surface gravity log(g) [cm/s2] | 4.0884 |
| Metallicity [Fe/H] | -0.2289 |
| Monochromatic extinction A0 [mag] | 0.0053 |
| Radius [R] | |
| Luminosity [L] |
| Simbad link | BK Oct |
|---|---|
| J magnitude | 13.048 |
| H magnitude | 12.789 |
| K magnitude | 12.732 |
| Johnson_U magnitude | |
| Johnson_B magnitude | |
| Johnson_V magnitude | |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |