V1138 Her
| Simbad link | V1138 Her |
|---|---|
| Source publication | Liu, Xin-Yi (2023) - The study of 11 contact binaries with mass ratios less than 0.1 |
| ADS link | 2023MNRAS.519.5760L |
| Name in Source publication | J155009 |
| Orbital period in days (P [d]) | 0.46091 |
| Mass ratio (q) | 0.08 |
| Mass ratio determination | Photometric |
| Temperature determination | Color index |
| Type | Unspecified |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? | |
| Search TESS catalog of Eclipsing Binaries | TIC 377391380 |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.46091 |
| Mass ratio (q) | 0.08 |
| Orbital inclination in degrees (i [o]) | 85.7 |
| Fillout (f) | 0.19 |
| Primary temperature in Kelvins (T1 [K]) | 6619 |
| Secondary temperature in Kelvins (T2 [K]) | 6199 |
| Primary polar radius in units of orbital separation (r1p) | |
| Secondary polar radius in units of orbital separation (r2p) | |
| Surface potential (Ω) | 1.89 |
| Orbital separation in solar radii (a [R]) | 3.02 |
|---|---|
| Primary radius in solar units (R1 [R]) | 1.88 |
| Secondary radius in solar units (R2 [R]) | 0.64 |
| Primary mass in solar units (M1 [M]) | 1.6 |
| Secondary mass in solar units (M2 [M]) | 0.13 |
| Primary temperature in kelvins (T1 [K]) | 6619 |
| Secondary temperature in Kelvins (T2 [K]) | 6199 |
| Primary luminosity in solar units (L1 [L]) | 6.43 |
| Secondary luminosity in solar units (L2 [L]) | 0.74 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) |
| Orbital period in days (P [d]) | 0.46091 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | 0.053741 |
| Cyclic period variation in years (Pc [y]) |
| Host | Longitude λ [o] | Latitude β [o] | Angular radius σ [o] | Temperature contrast Tspot/Tstar |
|---|---|---|---|---|
| Primary | 0.35 | 31.21 | 0.85 |
| Designation | Gaia DR3 1403186504462105216 |
|---|---|
| RA | 237:32:18.960542 |
| DEC | 49:36:39.107155 |
| l | 78.6865005977326 |
| b | 49.23238162120427 |
| G [mag] | 13.662304 |
| G_bp [mag] | 13.860729 |
| G_rp [mag] | 13.316394 |
| Parallax | 0.6172764953146647 |
| Distance [pc] | 1519.7837 |
| Temperature [K] | 6698.7466 |
| Surface gravity log(g) [cm/s2] | 4.032 |
| Metallicity [Fe/H] | -0.3224 |
| Monochromatic extinction A0 [mag] | 0.0015 |
| Radius [R] | |
| Luminosity [L] |
| Temperature [K] | 6907.74 |
|---|---|
| Surface gravity log(g) [cm/s2] | 3.948 |
| Metallicity [Fe/H] | -0.099 |
| Simbad link | V1138 Her |
|---|---|
| J magnitude | 12.961 |
| H magnitude | 12.76 |
| K magnitude | 12.714 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 13.8 |
| Johnson_V magnitude | 13.71 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |