FG Hya
| Simbad link | FG Hya |
|---|---|
| Source publication | Zola, S. (2010) - Physical parameters of components in close binary systems - VII |
| ADS link | 2010MNRAS.408..464Z |
| Name in Source publication | FG Hya |
| Orbital period in days (P [d]) | 0.327828 |
| Mass ratio (q) | 0.1 |
| Mass ratio determination | Spectroscopic |
| Type | W |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.327828 |
| Mass ratio (q) | 0.1 |
| Orbital inclination in degrees (i [o]) | 82.6 |
| Fillout (f) | 0.7 |
| Primary temperature in Kelvins (T1 [K]) | 6200 |
| Secondary temperature in Kelvins (T2 [K]) | 6519 |
| Primary polar radius in units of orbital separation (r1p) | 0.5456 |
| Secondary polar radius in units of orbital separation (r2p) | 0.2092 |
| Surface potential (Ω) | 1.924 |
| Orbital separation in solar radii (a [R]) | 2.34 |
|---|---|
| Primary radius in solar units (R1 [R]) | 1.44 |
| Secondary radius in solar units (R2 [R]) | 0.51 |
| Primary mass in solar units (M1 [M]) | 1.45 |
| Secondary mass in solar units (M2 [M]) | 0.16 |
| Primary temperature in kelvins (T1 [K]) | 6200 |
| Secondary temperature in Kelvins (T2 [K]) | 6519 |
| Primary luminosity in solar units (L1 [L]) | 2.7 |
| Secondary luminosity in solar units (L2 [L]) | 0.42 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) | 4.27 |
| Orbital period in days (P [d]) | 0.327828 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | -0.016934 |
| Cyclic period variation in years (Pc [y]) | 36.4 |
| Period study | Qian, Shengbang (2005) - Improved astrophysical parameters for the overcontact binary FG Hydrae |
| ADS link | 2005MNRAS.356..765Q |
| Designation | Gaia DR2 3091950774617206016 |
|---|---|
| RA | 126:45:59.1768 |
| DEC | 3:30:51.336637 |
| l | 221.0332512 |
| b | 22.8265177 |
| G magnitude | 10.059091 |
| G_bp magnitude | 10.402578 |
| G_rp magnitude | 9.569615 |
| Radial velocity [km/s] | |
| Parallax | 6.507573366 |
| Distance [pc] | 153.667111 |
| Temperature [K] | 5787.5 |
| Radius [R] | 1.2829986 |
| Luminosity [L] | 1.6638383 |
| Simbad link | FG Hya |
|---|---|
| J magnitude | 8.877 |
| H magnitude | 8.568 |
| K magnitude | 8.527 |
| Johnson_U magnitude | 9.401 |
| Johnson_B magnitude | 10.62 |
| Johnson_V magnitude | 10.04 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 10.0591 |
| Sloan_r magnitude | |
| Sloan_i magnitude | 9.401 |
| Sloan_z magnitude |