LS Del
| Simbad link | LS Del |
|---|---|
| Source publication | Deb, Sukanta (2011) - Physical parameters of 62 eclipsing binary stars using the All Sky Automated Survey-3 data - I |
| ADS link | 2011MNRAS.412.1787D |
| Name in Source publication | 205710+1938.8 |
| Orbital period in days (P [d]) | 0.363842 |
| Mass ratio (q) | 0.38 |
| Mass ratio determination | Spectroscopic |
| Temperature determination | Spectral type |
| Type | W |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? | |
| Search TESS catalog of Eclipsing Binaries | TIC 265972568 |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.363842 |
| Mass ratio (q) | 0.38 |
| Orbital inclination in degrees (i [o]) | 45.2 |
| Fillout (f) | 0.09 |
| Primary temperature in Kelvins (T1 [K]) | 6250 |
| Secondary temperature in Kelvins (T2 [K]) | 6192 |
| Primary polar radius in units of orbital separation (r1p) | |
| Secondary polar radius in units of orbital separation (r2p) | |
| Surface potential (Ω) | 6.051 |
| Orbital separation in solar radii (a [R]) | 2.57 |
|---|---|
| Primary radius in solar units (R1 [R]) | 0.79 |
| Secondary radius in solar units (R2 [R]) | 1.23 |
| Primary mass in solar units (M1 [M]) | 0.47 |
| Secondary mass in solar units (M2 [M]) | 1.25 |
| Primary temperature in kelvins (T1 [K]) | 6250 |
| Secondary temperature in Kelvins (T2 [K]) | 6192 |
| Primary luminosity in solar units (L1 [L]) | 0.93 |
| Secondary luminosity in solar units (L2 [L]) | 1.99 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) |
| Orbital period in days (P [d]) | 0.363842 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | 0.01944 |
| Cyclic period variation in years (Pc [y]) | |
| Period study | Qian, Shengbang (2001) - A possible relation between the period change and the mass ratio for W-type contact binaries |
| ADS link | 2001MNRAS.328..635Q |
| Designation | Gaia DR3 1813514756363926400 |
|---|---|
| RA | 314:17:36.760333 |
| DEC | 19:39:00.598074 |
| l | 66.0022866531652 |
| b | -16.485771478656396 |
| G [mag] | 8.584123 |
| G_bp [mag] | 8.849169 |
| G_rp [mag] | 8.142809 |
| Parallax | 10.010490821300529 |
| Distance [pc] | 99.5548 |
| Temperature [K] | 6005.8364 |
| Surface gravity log(g) [cm/s2] | 4.1471 |
| Metallicity [Fe/H] | -0.5649 |
| Monochromatic extinction A0 [mag] | 0.0022 |
| Radius [R] | 1.4747406 |
| Luminosity [L] | 2.689048 |
| Simbad link | LS Del |
|---|---|
| J magnitude | 7.605 |
| H magnitude | 7.358 |
| K magnitude | 7.297 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 9.178 |
| Johnson_V magnitude | 8.722 |
| Johnson_R magnitude | 8.3 |
| Johnson_I magnitude | 8.054 |
| Sloan_u magnitude | |
| Sloan_g magnitude | |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |