KN Per
| Simbad link | KN Per |
|---|---|
| Source publication | Goderya, S. N. (1997) - Photometric Investigation of the Eclipsing Binary Star KN Per |
| ADS link | 1997Ap&SS.254..295G |
| Name in Source publication | KN Per |
| Orbital period in days (P [d]) | 0.86646 |
| Mass ratio (q) | 0.25 |
| Mass ratio determination | Photometric |
| Temperature determination | Unknown |
| Type | A |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.86646 |
| Mass ratio (q) | 0.25 |
| Orbital inclination in degrees (i [o]) | 83.6 |
| Fillout (f) | 0.53 |
| Primary temperature in Kelvins (T1 [K]) | 7650 |
| Secondary temperature in Kelvins (T2 [K]) | 7288 |
| Primary polar radius in units of orbital separation (r1p) | 0.4892 |
| Secondary polar radius in units of orbital separation (r2p) | 0.2694 |
| Surface potential (Ω) | 2.269 |
| Orbital separation in solar radii (a [R]) | |
|---|---|
| Primary radius in solar units (R1 [R]) | |
| Secondary radius in solar units (R2 [R]) | |
| Primary mass in solar units (M1 [M]) | |
| Secondary mass in solar units (M2 [M]) | |
| Primary temperature in kelvins (T1 [K]) | 7650 |
| Secondary temperature in Kelvins (T2 [K]) | 7288 |
| Primary luminosity in solar units (L1 [L]) | |
| Secondary luminosity in solar units (L2 [L]) | |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) |
| Orbital period in days (P [d]) | 0.86646 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | 0.036115 |
| Cyclic period variation in years (Pc [y]) | |
| Period study | Hu, Ke (2018) - On orbital period changes of two low-mass-ratio and deep-contact binaries: FN Cam and KN Per |
| ADS link | 2018NewA...62...20H |
| Designation | Gaia DR2 236411325145154304 |
|---|---|
| RA | 50:38:54.674448 |
| DEC | 41:19:55.043652 |
| l | 151.1252407 |
| b | -13.1198486 |
| G [mag] | 11.50722 |
| G_bp [mag] | 11.691247 |
| G_rp [mag] | 11.047891 |
| Parallax | 0.93946909 |
| Distance [pc] | 2.68E-09 |
| Temperature [K] | 6611 |
| Surface gravity log(g) [cm/s2] | |
| Metallicity [Fe/H] | |
| Monochromatic extinction A0 [mag] | |
| Radius [R] | 3.4609053 |
| Luminosity [L] | 20.613073 |
| Temperature [K] | 7142.885 |
|---|---|
| Surface gravity log(g) [cm/s2] | 3.869 |
| Metallicity [Fe/H] | 0.2935 |
| Simbad link | KN Per |
|---|---|
| J magnitude | 10.52 |
| H magnitude | 10.352 |
| K magnitude | 10.283 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 11.79 |
| Johnson_V magnitude | 11.41 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 11.5072 |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |