QT UMa
| Simbad link | QT UMa |
|---|---|
| Source publication | Michaels, E. J. (2017) - A Photometric Study of the Eclipsing Binary QT Ursae Majoris |
| ADS link | 2017JAVSO..45..133M |
| Name in Source publication | QT UMa |
| Orbital period in days (P [d]) | 0.47354 |
| Mass ratio (q) | 0.58 |
| Mass ratio determination | Photometric |
| Type | W |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.47354 |
| Mass ratio (q) | 0.58 |
| Orbital inclination in degrees (i [o]) | 81.9 |
| Fillout (f) | 0.15 |
| Primary temperature in Kelvins (T1 [K]) | 5497 |
| Secondary temperature in Kelvins (T2 [K]) | 6053 |
| Primary polar radius in units of orbital separation (r1p) | 0.4091 |
| Secondary polar radius in units of orbital separation (r2p) | 0.3204 |
| Surface potential (Ω) | 2.9854 |
| Orbital separation in solar radii (a [R]) | 3.4 |
|---|---|
| Primary radius in solar units (R1 [R]) | 1.49 |
| Secondary radius in solar units (R2 [R]) | 1.17 |
| Primary mass in solar units (M1 [M]) | 1.48 |
| Secondary mass in solar units (M2 [M]) | 0.87 |
| Primary temperature in kelvins (T1 [K]) | 5497 |
| Secondary temperature in Kelvins (T2 [K]) | 6053 |
| Primary luminosity in solar units (L1 [L]) | 1.82 |
| Secondary luminosity in solar units (L2 [L]) | 1.66 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) | 2.41 |
| Orbital period in days (P [d]) | 0.47354 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | 0.09504 |
| Cyclic period variation in years (Pc [y]) |
| Designation | Gaia DR2 825940185460526336 |
|---|---|
| RA | 144:07:14.3958 |
| DEC | 48:52:45.30774 |
| l | 169.2160519 |
| b | 46.84486497 |
| G magnitude | 16.606833 |
| G_bp magnitude | 15.591735 |
| G_rp magnitude | 14.651607 |
| Radial velocity [km/s] | |
| Parallax | 1.732805829 |
| Distance [pc] | 577.098705 |
| Temperature [K] | 5095.6333 |
| Radius [R] | |
| Luminosity [L] |
| Orbital period [d] | 0.473536568 |
|---|---|
| Temperature [K] | 5713.01 |
| Surface gravity (log(g)) | 4.09 |
| Metallicity ([Fe/H]) | -0.052 |
| Simbad link | QT UMa |
|---|---|
| J magnitude | 10.282 |
| H magnitude | 9.893 |
| K magnitude | 9.845 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 11.84 |
| Johnson_V magnitude | 11.15 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 11.148 |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |