EP Cep
| Simbad link | EP Cep |
|---|---|
| Source publication | Chen, Xiaodian (2016) - Physical Parameter Study of Eight W Ursae Majoris-type Contact Binaries in NGC 188 |
| ADS link | 2016AJ....152..129C |
| Name in Source publication | V1 |
| Orbital period in days (P [d]) | 0.289745 |
| Mass ratio (q) | 0.18 |
| Mass ratio determination | Photometric |
| Temperature determination | Unknown |
| Type | W |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.289745 |
| Mass ratio (q) | 0.18 |
| Orbital inclination in degrees (i [o]) | 69.4 |
| Fillout (f) | 0.17 |
| Primary temperature in Kelvins (T1 [K]) | 5074 |
| Secondary temperature in Kelvins (T2 [K]) | 5600 |
| Primary polar radius in units of orbital separation (r1p) | 0.4977 |
| Secondary polar radius in units of orbital separation (r2p) | 0.233 |
| Surface potential (Ω) | 2.1747 |
| Orbital separation in solar radii (a [R]) | 1.88 |
|---|---|
| Primary radius in solar units (R1 [R]) | 1.01 |
| Secondary radius in solar units (R2 [R]) | 0.48 |
| Primary mass in solar units (M1 [M]) | 0.9 |
| Secondary mass in solar units (M2 [M]) | 0.17 |
| Primary temperature in kelvins (T1 [K]) | 5074 |
| Secondary temperature in Kelvins (T2 [K]) | 5600 |
| Primary luminosity in solar units (L1 [L]) | 0.67 |
| Secondary luminosity in solar units (L2 [L]) | 0.22 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) | 6.97 |
| Designation | Gaia DR2 573943905765304576 |
|---|---|
| RA | 11:43:29.729388 |
| DEC | 85:21:43.668792 |
| l | 122.8326367 |
| b | 22.49125509 |
| G [mag] | 16.542055 |
| G_bp [mag] | 16.99297 |
| G_rp [mag] | 15.87886 |
| Parallax | 0.455877814 |
| Distance [pc] | 1.2E-09 |
| Temperature [K] | 4956 |
| Surface gravity log(g) [cm/s2] | |
| Metallicity [Fe/H] | |
| Monochromatic extinction A0 [mag] | |
| Radius [R] | 1.3326306 |
| Luminosity [L] | 0.9652493 |
| Simbad link | EP Cep |
|---|---|
| J magnitude | 15.242 |
| H magnitude | 14.776 |
| K magnitude | 14.523 |
| Johnson_U magnitude | 15.589 |
| Johnson_B magnitude | 17.538 |
| Johnson_V magnitude | 16.664 |
| Johnson_R magnitude | 16.121 |
| Johnson_I magnitude | |
| Sloan_u magnitude | 18.085 |
| Sloan_g magnitude | 16.5421 |
| Sloan_r magnitude | 16.121 |
| Sloan_i magnitude | 15.589 |
| Sloan_z magnitude |