V637 Peg
| Simbad link | V637 Peg |
|---|---|
| Source publication | Poro, Atila (2025) - BSN. V. The First Detailed Light Curve Modeling of Eight Totally Eclipsing Contact Binary Stars Using Ground-based and TESS Observations |
| ADS link | 2025PASP..137l4202P |
| Name in Source publication | V637 Peg |
| Orbital period in days (P [d]) | 0.311794 |
| Mass ratio (q) | 2.52 |
| 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 20637181 |
| Solver | BSN |
|---|---|
| Orbital period in days (P [d]) | 0.311794 |
| Mass ratio (q) | 2.52 |
| Orbital inclination in degrees (i [o]) | 83.4 |
| Fillout (f) | 0.13 |
| Primary temperature in Kelvins (T1 [K]) | 4975 |
| Secondary temperature in Kelvins (T2 [K]) | 4720 |
| Primary polar radius in units of orbital separation (r1p) | |
| Secondary polar radius in units of orbital separation (r2p) | |
| Surface potential (Ω) | 5.886 |
| Orbital separation in solar radii (a [R]) | 2.3 |
|---|---|
| Primary radius in solar units (R1 [R]) | 0.72 |
| Secondary radius in solar units (R2 [R]) | 1.09 |
| Primary mass in solar units (M1 [M]) | 0.48 |
| Secondary mass in solar units (M2 [M]) | 1.2 |
| Primary temperature in kelvins (T1 [K]) | 4975 |
| Secondary temperature in Kelvins (T2 [K]) | 4720 |
| Primary luminosity in solar units (L1 [L]) | 0.28 |
| Secondary luminosity in solar units (L2 [L]) | 0.53 |
| 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 |
|---|---|---|---|---|
| Secondary | 107 | 19 | 0.31 |
| Designation | Gaia DR3 1893906584117781632 |
|---|---|
| RA | 335:28:20.709606 |
| DEC | 28:02:46.747664 |
| l | 86.95495248145441 |
| b | -24.18621512031532 |
| G [mag] | 12.793594 |
| G_bp [mag] | 13.278422 |
| G_rp [mag] | 12.113751 |
| Parallax | 3.1663008960726335 |
| Distance [pc] | 314.2004 |
| Temperature [K] | 4903.751 |
| Surface gravity log(g) [cm/s2] | 4.3355 |
| Metallicity [Fe/H] | 0.0241 |
| Monochromatic extinction A0 [mag] | 0.1239 |
| Radius [R] | |
| Luminosity [L] |
| Temperature [K] | 5215.69 |
|---|---|
| Surface gravity log(g) [cm/s2] | 4.244 |
| Metallicity [Fe/H] | 0.362 |
| Simbad link | V637 Peg |
|---|---|
| J magnitude | 11.233 |
| H magnitude | 10.792 |
| K magnitude | 10.677 |
| Johnson_U magnitude | |
| Johnson_B magnitude | |
| Johnson_V magnitude | 12.86 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |