FO Hya
| Simbad link | FO Hya |
|---|---|
| Source publication | Prasad, Vinod (2013) - BVRI photometric and polarimetric studies of W UMa type eclipsing binary FO Hydra |
| ADS link | 2013NewA...20...52P |
| Name in Source publication | FO Hya |
| Orbital period in days (P [d]) | 0.469556 |
| Mass ratio (q) | 0.24 |
| Mass ratio determination | Photometric |
| Type | A |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | PHOEBE |
|---|---|
| Orbital period in days (P [d]) | 0.469556 |
| Mass ratio (q) | 0.24 |
| Orbital inclination in degrees (i [o]) | 78.1 |
| Fillout (f) | 0.69 |
| Primary temperature in Kelvins (T1 [K]) | 7000 |
| Secondary temperature in Kelvins (T2 [K]) | 5213 |
| Primary polar radius in units of orbital separation (r1p) | 0.498 |
| Secondary polar radius in units of orbital separation (r2p) | 0.272 |
| Surface potential (Ω) | 2.2211 |
| Orbital separation in solar radii (a [R]) | 2.99 |
|---|---|
| Primary radius in solar units (R1 [R]) | 1.62 |
| Secondary radius in solar units (R2 [R]) | 0.91 |
| Primary mass in solar units (M1 [M]) | 1.31 |
| Secondary mass in solar units (M2 [M]) | 0.31 |
| Primary temperature in kelvins (T1 [K]) | 7000 |
| Secondary temperature in Kelvins (T2 [K]) | 5213 |
| Primary luminosity in solar units (L1 [L]) | 5.65 |
| Secondary luminosity in solar units (L2 [L]) | 0.55 |
| Distance in parsecs (d [pc]) | 446.68 |
| Age in gigayears (τ [gyr]) | 5.94 |
| Orbital period in days (P [d]) | 0.469556 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | 0.004985 |
| Cyclic period variation in years (Pc [y]) | 42.3 |
| Designation | Gaia DR2 5670997370788658816 |
|---|---|
| RA | 149:55:49.69092 |
| DEC | -20:52:03.597132 |
| l | 256.2671316 |
| b | 27.78817636 |
| G magnitude | 10.902928 |
| G_bp magnitude | 11.109428 |
| G_rp magnitude | 10.635784 |
| Radial velocity [km/s] | |
| Parallax | 2.222321874 |
| Distance [pc] | 449.979821 |
| Temperature [K] | 6890 |
| Radius [R] | 1.7809197 |
| Luminosity [L] | 6.4396205 |
| Simbad link | FO Hya |
|---|---|
| J magnitude | 10.363 |
| H magnitude | 10.218 |
| K magnitude | 10.128 |
| Johnson_U magnitude | 11.081 |
| Johnson_B magnitude | 11.31 |
| Johnson_V magnitude | 11.05 |
| Johnson_R magnitude | 11.168 |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 11.354 |
| Sloan_r magnitude | 11.168 |
| Sloan_i magnitude | 11.081 |
| Sloan_z magnitude |