IK Per
| Simbad link | IK Per |
|---|---|
| Source publication | Zhu, L. -Y. (2005) - Deep, Low Mass Ratio Overcontact Binaries. II. IK Persei |
| ADS link | 2005AJ....129.2806Z |
| Name in Source publication | IK Per |
| Orbital period in days (P [d]) | 0.676035 |
| Mass ratio (q) | 0.19 |
| Mass ratio determination | Photometric |
| Type | A |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.676035 |
| Mass ratio (q) | 0.19 |
| Orbital inclination in degrees (i [o]) | 77.8 |
| Fillout (f) | 0.52 |
| Primary temperature in Kelvins (T1 [K]) | 9070 |
| Secondary temperature in Kelvins (T2 [K]) | 7470 |
| Primary polar radius in units of orbital separation (r1p) | 0.5061 |
| Secondary polar radius in units of orbital separation (r2p) | 0.2476 |
| Surface potential (Ω) | 2.1464 |
| Orbital separation in solar radii (a [R]) | 4.3 |
|---|---|
| Primary radius in solar units (R1 [R]) | 2.4 |
| Secondary radius in solar units (R2 [R]) | 1.15 |
| Primary mass in solar units (M1 [M]) | 1.99 |
| Secondary mass in solar units (M2 [M]) | 0.34 |
| Primary temperature in kelvins (T1 [K]) | 9070 |
| Secondary temperature in Kelvins (T2 [K]) | 7470 |
| Primary luminosity in solar units (L1 [L]) | 35.04 |
| Secondary luminosity in solar units (L2 [L]) | 5.67 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) | 1.27 |
| Orbital period in days (P [d]) | 0.676035 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | -0.0216 |
| Cyclic period variation in years (Pc [y]) | 50.5 |
| Designation | Gaia DR2 228201027006559872 |
|---|---|
| RA | 67:21:51.83964 |
| DEC | 42:03:10.5885 |
| l | 160.2615667 |
| b | -4.48968246 |
| G magnitude | 11.077184 |
| G_bp magnitude | 11.500548 |
| G_rp magnitude | 10.469617 |
| Radial velocity [km/s] | |
| Parallax | |
| Distance [pc] | |
| Temperature [K] | 5165.25 |
| Radius [R] | |
| Luminosity [L] |
| Simbad link | IK Per |
|---|---|
| J magnitude | 9.637 |
| H magnitude | 9.371 |
| K magnitude | 9.272 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 12.17 |
| Johnson_V magnitude | 11.49 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 11.0772 |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |