V840 Aur
| Simbad link | V840 Aur |
|---|---|
| Source publication | Loukaidou, G. A. (2022) - CoBiToM Project - II. Evolution of contact binary systems close to the orbital period cut-off |
| ADS link | 2022MNRAS.514.5528L |
| Name in Source publication | 1SWASP J052926.88+461147.5 |
| Orbital period in days (P [d]) | 0.226643 |
| Mass ratio (q) | 0.38 |
| 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 88054422 |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.226643 |
| Mass ratio (q) | 0.38 |
| Orbital inclination in degrees (i [o]) | 88.7 |
| Fillout (f) | 0.15 |
| Primary temperature in Kelvins (T1 [K]) | 5400 |
| Secondary temperature in Kelvins (T2 [K]) | 5328 |
| Primary polar radius in units of orbital separation (r1p) | |
| Secondary polar radius in units of orbital separation (r2p) | |
| Surface potential (Ω) | 2.613 |
| Orbital separation in solar radii (a [R]) | |
|---|---|
| Primary radius in solar units (R1 [R]) | 0.8 |
| Secondary radius in solar units (R2 [R]) | 0.49 |
| Primary mass in solar units (M1 [M]) | 0.85 |
| Secondary mass in solar units (M2 [M]) | 0.33 |
| Primary temperature in kelvins (T1 [K]) | 5400 |
| Secondary temperature in Kelvins (T2 [K]) | 5328 |
| Primary luminosity in solar units (L1 [L]) | 0.48 |
| Secondary luminosity in solar units (L2 [L]) | 0.17 |
| 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 |
|---|---|---|---|---|
| Primary | 121.7 | 14.5 | 0.763 |
| Designation | Gaia DR3 209018745286205952 |
|---|---|
| RA | 82:21:44.379137 |
| DEC | 46:11:47.045332 |
| l | 163.66784455985209 |
| b | 6.510092192185082 |
| G [mag] | 14.898184 |
| G_bp [mag] | 15.498047 |
| G_rp [mag] | 14.153335 |
| Parallax | 1.8578197948128763 |
| Distance [pc] | 523.8912 |
| Temperature [K] | 4881.5166 |
| Surface gravity log(g) [cm/s2] | 4.458 |
| Metallicity [Fe/H] | -0.4785 |
| Monochromatic extinction A0 [mag] | 0.5122 |
| Radius [R] | 0.7109832 |
| Luminosity [L] | 0.25943682 |
| Simbad link | V840 Aur |
|---|---|
| J magnitude | 13.071 |
| H magnitude | 12.534 |
| K magnitude | 12.412 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 16.802 |
| Johnson_V magnitude | 14.66 |
| Johnson_R magnitude | 15.242 |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 16.251 |
| Sloan_r magnitude | 15.324 |
| Sloan_i magnitude | |
| Sloan_z magnitude |