V377 UMa
| Simbad link | V377 UMa |
|---|---|
| Source publication | Liu, Fei (2025) - Extremely low mass ratio contact binaries ─ II. The first photometric and spectroscopic investigations of six systems with orbital periods longer than 0.5 d |
| ADS link | 2025MNRAS.540.1290L |
| Name in Source publication | J105032 |
| Orbital period in days (P [d]) | 0.576903 |
| Mass ratio (q) | 0.12 |
| Mass ratio determination | Photometric |
| Temperature determination | Unknown |
| Type | W |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? | |
| Search TESS catalog of Eclipsing Binaries | TIC 159992311 |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.576903 |
| Mass ratio (q) | 0.12 |
| Orbital inclination in degrees (i [o]) | 70.8 |
| Fillout (f) | 0.58 |
| Primary temperature in Kelvins (T1 [K]) | 7162 |
| Secondary temperature in Kelvins (T2 [K]) | 7627 |
| Primary polar radius in units of orbital separation (r1p) | |
| Secondary polar radius in units of orbital separation (r2p) | |
| Surface potential (Ω) | 1.965 |
| Orbital separation in solar radii (a [R]) | 3.74 |
|---|---|
| Primary radius in solar units (R1 [R]) | 2.19 |
| Secondary radius in solar units (R2 [R]) | 0.89 |
| Primary mass in solar units (M1 [M]) | 1.89 |
| Secondary mass in solar units (M2 [M]) | 0.22 |
| Primary temperature in kelvins (T1 [K]) | 7162 |
| Secondary temperature in Kelvins (T2 [K]) | 7627 |
| Primary luminosity in solar units (L1 [L]) | 11.35 |
| Secondary luminosity in solar units (L2 [L]) | 2.41 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) | 1.98 |
| Orbital period in days (P [d]) | 0.576903 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | -0.023501 |
| Cyclic period variation in years (Pc [y]) |
| Designation | Gaia DR3 779939603955061120 |
|---|---|
| RA | 162:38:13.241931 |
| DEC | 42:08:29.091113 |
| l | 173.67724507550926 |
| b | 61.18358077615608 |
| G [mag] | 12.432072 |
| G_bp [mag] | 12.597819 |
| G_rp [mag] | 12.146618 |
| Parallax | 0.9285942037964063 |
| Distance [pc] | 1057.1255 |
| Temperature [K] | 7091.5303 |
| Surface gravity log(g) [cm/s2] | 3.9947 |
| Metallicity [Fe/H] | -0.5184 |
| Monochromatic extinction A0 [mag] | 0.0626 |
| Radius [R] | |
| Luminosity [L] |
| Temperature [K] | 7105.21 |
|---|---|
| Surface gravity log(g) [cm/s2] | 4.089 |
| Metallicity [Fe/H] | -0.286 |
| Simbad link | V377 UMa |
|---|---|
| J magnitude | 11.778 |
| H magnitude | 11.61 |
| K magnitude | 11.566 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 12.6 |
| Johnson_V magnitude | 12.6 |
| Johnson_R magnitude | 12.23 |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 12.596 |
| Sloan_r magnitude | 12.455 |
| Sloan_i magnitude | |
| Sloan_z magnitude |