V1222 Tau
| Simbad link | V1222 Tau |
|---|---|
| Source publication | Liu, Liang (2015) - An ignored high fill-out, extreme mass ratio contact binary V1222 Tauri |
| ADS link | 2015PASJ...67...74L |
| Name in Source publication | V1222 Tau |
| Orbital period in days (P [d]) | 0.291734 |
| Mass ratio (q) | 0.11 |
| Mass ratio determination | Photometric |
| Temperature determination | Unknown |
| Type | W |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.291734 |
| Mass ratio (q) | 0.11 |
| Orbital inclination in degrees (i [o]) | 80.2 |
| Fillout (f) | 0.54 |
| Primary temperature in Kelvins (T1 [K]) | 5425 |
| Secondary temperature in Kelvins (T2 [K]) | 5600 |
| Primary polar radius in units of orbital separation (r1p) | 0.5382 |
| Secondary polar radius in units of orbital separation (r2p) | 0.2103 |
| Surface potential (Ω) | 1.9573 |
| Orbital separation in solar radii (a [R]) | 1.85 |
|---|---|
| Primary radius in solar units (R1 [R]) | 1.06 |
| Secondary radius in solar units (R2 [R]) | 0.42 |
| Primary mass in solar units (M1 [M]) | 0.9 |
| Secondary mass in solar units (M2 [M]) | 0.1 |
| Primary temperature in kelvins (T1 [K]) | 5425 |
| Secondary temperature in Kelvins (T2 [K]) | 5600 |
| Primary luminosity in solar units (L1 [L]) | 0.88 |
| Secondary luminosity in solar units (L2 [L]) | 0.16 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) | 7.81 |
| Orbital period in days (P [d]) | 0.291734 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | 0.006114 |
| Cyclic period variation in years (Pc [y]) |
| Designation | Gaia DR2 12491177941817856 |
|---|---|
| RA | 52:06:26.258868 |
| DEC | 9:04:24.013546 |
| l | 174.8785789 |
| b | -37.49482025 |
| G [mag] | 13.677615 |
| G_bp [mag] | 14.164869 |
| G_rp [mag] | 13.020373 |
| Parallax | 1.804004801 |
| Distance [pc] | 1.26E-09 |
| Temperature [K] | 4891.1333 |
| Surface gravity log(g) [cm/s2] | |
| Metallicity [Fe/H] | |
| Monochromatic extinction A0 [mag] | |
| Radius [R] | 1.3032216 |
| Luminosity [L] | 0.8757281 |
| Temperature [K] | 5712.645 |
|---|---|
| Surface gravity log(g) [cm/s2] | 4.0955 |
| Metallicity [Fe/H] | -0.094 |
| Simbad link | V1222 Tau |
|---|---|
| J magnitude | 12.123 |
| H magnitude | 11.758 |
| K magnitude | 11.666 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 14.2 |
| Johnson_V magnitude | 13.48 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 13.6776 |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |