QW Gem
| Simbad link | QW Gem |
|---|---|
| Source publication | Cseki, A. (2013) - The Analysis of SuperWASP Photometric Data for the Overcontact Binary QW Gem |
| ADS link | 2013SerAJ.186...47C |
| Name in Source publication | QW Gem |
| Orbital period in days (P [d]) | 0.358123 |
| Mass ratio (q) | 0.33 |
| Mass ratio determination | Spectroscopic |
| Type | W |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | DC |
|---|---|
| Orbital period in days (P [d]) | 0.358123 |
| Mass ratio (q) | 0.33 |
| Orbital inclination in degrees (i [o]) | 80.2 |
| Fillout (f) | 0.15 |
| Primary temperature in Kelvins (T1 [K]) | 6200 |
| Secondary temperature in Kelvins (T2 [K]) | 6370 |
| Primary polar radius in units of orbital separation (r1p) | 0.4534 |
| Secondary polar radius in units of orbital separation (r2p) | 0.2754 |
| Surface potential (Ω) | 2.51 |
| Orbital separation in solar radii (a [R]) | 2.56 |
|---|---|
| Primary radius in solar units (R1 [R]) | 1.24 |
| Secondary radius in solar units (R2 [R]) | 0.76 |
| Primary mass in solar units (M1 [M]) | 1.3 |
| Secondary mass in solar units (M2 [M]) | 0.44 |
| Primary temperature in kelvins (T1 [K]) | 6200 |
| Secondary temperature in Kelvins (T2 [K]) | 6370 |
| Primary luminosity in solar units (L1 [L]) | 1.98 |
| Secondary luminosity in solar units (L2 [L]) | 0.79 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) | 4.02 |
| Orbital period in days (P [d]) | 0.358123 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | -0.022032 |
| Cyclic period variation in years (Pc [y]) | |
| Period study | Wang, Kun (2017) - Photometric study and period analysis of the W UM-type binary system QW Gem |
| ADS link | 2017RAA....17..112W |
| Designation | Gaia DR2 888443882447477760 |
|---|---|
| RA | 102:41:31.16544 |
| DEC | 29:27:10.937736 |
| l | 186.1882199 |
| b | 12.82337909 |
| G magnitude | 10.426347 |
| G_bp magnitude | 10.737875 |
| G_rp magnitude | 10.005454 |
| Radial velocity [km/s] | |
| Parallax | 4.600899566 |
| Distance [pc] | 217.3488 |
| Temperature [K] | 6036.6665 |
| Radius [R] | 1.4002769 |
| Luminosity [L] | 2.3459098 |
| Orbital period [d] | 0.35812272 |
|---|---|
| Temperature [K] | 6023.24 |
| Surface gravity (log(g)) | 4.274 |
| Metallicity ([Fe/H]) | -0.094 |
| Simbad link | QW Gem |
|---|---|
| J magnitude | |
| H magnitude | |
| K magnitude | |
| Johnson_U magnitude | |
| Johnson_B magnitude | 11.3 |
| Johnson_V magnitude | 10.78 |
| Johnson_R magnitude | 10 |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 10.4263 |
| Sloan_r magnitude | 10 |
| Sloan_i magnitude | |
| Sloan_z magnitude |