LP UMa
| Simbad link | LP 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 | LP UMa |
| Orbital period in days (P [d]) | 0.3098 |
| Mass ratio (q) | 0.33 |
| Mass ratio determination | Photometric |
| Temperature determination | Color index |
| Type | A |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? | |
| Search TESS catalog of Eclipsing Binaries | TIC 285019403 |
| Solver | DC |
|---|---|
| Orbital period in days (P [d]) | 0.3098 |
| Mass ratio (q) | 0.33 |
| Orbital inclination in degrees (i [o]) | 50.3 |
| Fillout (f) | 0.17 |
| Primary temperature in Kelvins (T1 [K]) | 5500 |
| Secondary temperature in Kelvins (T2 [K]) | 5512 |
| Primary polar radius in units of orbital separation (r1p) | 0.456 |
| Secondary polar radius in units of orbital separation (r2p) | 0.275 |
| Surface potential (Ω) | 2.4905 |
| Orbital separation in solar radii (a [R]) | 2.06 |
|---|---|
| Primary radius in solar units (R1 [R]) | 1.01 |
| Secondary radius in solar units (R2 [R]) | 0.61 |
| Primary mass in solar units (M1 [M]) | 0.92 |
| Secondary mass in solar units (M2 [M]) | 0.3 |
| Primary temperature in kelvins (T1 [K]) | 5500 |
| Secondary temperature in Kelvins (T2 [K]) | 5512 |
| Primary luminosity in solar units (L1 [L]) | |
| Secondary luminosity in solar units (L2 [L]) | |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) |
| Orbital period in days (P [d]) | 0.3098 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | 0.093312 |
| Cyclic period variation in years (Pc [y]) | 14.84 |
| Period study | Guo, D. -F. (2016) - The highest rate orbital period increasing contact binary LP UMa revisited |
| ADS link | 2016NewA...44...29G |
| Host | Longitude λ [o] | Latitude β [o] | Angular radius σ [o] | Temperature contrast Tspot/Tstar |
|---|---|---|---|---|
| Primary | 69.1 | 86.3 | 48.1 | 0.85 |
| Secondary | 117.6 | -29.3 | 46.5 | 0.87 |
| Designation | Gaia DR3 855120777384480512 |
|---|---|
| RA | 158:29:27.185037 |
| DEC | 58:52:15.623414 |
| l | 150.15617229974936 |
| b | 50.36259284521706 |
| G [mag] | 12.478216 |
| G_bp [mag] | 12.819985 |
| G_rp [mag] | 11.97484 |
| Parallax | 2.2016419012381054 |
| Distance [pc] | 449.8605 |
| Temperature [K] | 5761.66 |
| Surface gravity log(g) [cm/s2] | 4.1648 |
| Metallicity [Fe/H] | -0.1642 |
| Monochromatic extinction A0 [mag] | 0.1267 |
| Radius [R] | 1.2436079 |
| Luminosity [L] | 1.5401398 |
| Simbad link | LP UMa |
|---|---|
| J magnitude | 11.392 |
| H magnitude | 11.073 |
| K magnitude | 10.992 |
| Johnson_U magnitude | |
| Johnson_B magnitude | |
| Johnson_V magnitude | |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | 14.777 |
| Sloan_g magnitude | 13.34 |
| Sloan_r magnitude | 14.096 |
| Sloan_i magnitude | 13.7 |
| Sloan_z magnitude | 12.834 |