OQ UMa
| Simbad link | OQ UMa |
|---|---|
| Source publication | Grozdanović, Marko (2025) - Light Curve Analysis Of W-uma Type Binary Systems Rz Umi, Oq Uma, Lp Uma |
| ADS link | 2025arXiv250700768G |
| Name in Source publication | OQ UMa |
| Orbital period in days (P [d]) | 0.2833 |
| Mass ratio (q) | 0.29 |
| Mass ratio determination | Photometric |
| Temperature determination | Unknown |
| Type | A |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? | |
| Search TESS catalog of Eclipsing Binaries | TIC 441639865 |
| Solver | DC |
|---|---|
| Orbital period in days (P [d]) | 0.2833 |
| Mass ratio (q) | 0.29 |
| Orbital inclination in degrees (i [o]) | 89.4 |
| Fillout (f) | 0.13 |
| Primary temperature in Kelvins (T1 [K]) | 5850 |
| Secondary temperature in Kelvins (T2 [K]) | 5849 |
| Primary polar radius in units of orbital separation (r1p) | 0.463 |
| Secondary polar radius in units of orbital separation (r2p) | 0.264 |
| Surface potential (Ω) | 2.4206 |
| Orbital separation in solar radii (a [R]) | 1.97 |
|---|---|
| Primary radius in solar units (R1 [R]) | 0.98 |
| Secondary radius in solar units (R2 [R]) | 0.56 |
| Primary mass in solar units (M1 [M]) | 1 |
| Secondary mass in solar units (M2 [M]) | 0.29 |
| Primary temperature in kelvins (T1 [K]) | 5850 |
| Secondary temperature in Kelvins (T2 [K]) | 5849 |
| Primary luminosity in solar units (L1 [L]) | |
| Secondary luminosity in solar units (L2 [L]) | |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) |
| Host | Longitude λ [o] | Latitude β [o] | Angular radius σ [o] | Temperature contrast Tspot/Tstar |
|---|---|---|---|---|
| Primary | 182.5 | 33.1 | 32.9 | 0.95 |
| Secondary | 155.5 | 37.6 | 43.4 | 1.1 |
| Designation | Gaia DR3 1657764437460064128 |
|---|---|
| RA | 209:20:34.934258 |
| DEC | 56:26:06.915588 |
| l | 105.50787483164814 |
| b | 58.40651857035167 |
| G [mag] | 13.00221 |
| G_bp [mag] | 13.348469 |
| G_rp [mag] | 12.449484 |
| Parallax | 2.29127759907202 |
| Distance [pc] | 431.7828 |
| Temperature [K] | 5847.2197 |
| Surface gravity log(g) [cm/s2] | 4.3911 |
| Metallicity [Fe/H] | -0.0885 |
| Monochromatic extinction A0 [mag] | 0.2541 |
| Radius [R] | |
| Luminosity [L] |
| Temperature [K] | 5491.36 |
|---|---|
| Surface gravity log(g) [cm/s2] | 4.025 |
| Metallicity [Fe/H] | -0.294 |
| Simbad link | OQ UMa |
|---|---|
| J magnitude | 11.962 |
| H magnitude | 11.527 |
| K magnitude | 11.421 |
| Johnson_U magnitude | |
| Johnson_B magnitude | |
| Johnson_V magnitude | 13.065 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 13.412 |
| Sloan_r magnitude | 12.938 |
| Sloan_i magnitude | |
| Sloan_z magnitude |