V921 Her
| Simbad link | V921 Her |
|---|---|
| Source publication | Zhou, Xiao (2016) - The Photometric Investigation of V921 Her Using the Lunar-Based Ultraviolet Telescope of Chang'e-3 Mission |
| ADS link | 2016AdAst2016E...7Z |
| Name in Source publication | V921 Her |
| Orbital period in days (P [d]) | 0.877376 |
| Mass ratio (q) | 0.23 |
| Mass ratio determination | Spectroscopic |
| Type | A |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.877376 |
| Mass ratio (q) | 0.23 |
| Orbital inclination in degrees (i [o]) | 75.4 |
| Fillout (f) | 0 |
| Primary temperature in Kelvins (T1 [K]) | 7700 |
| Secondary temperature in Kelvins (T2 [K]) | 7003 |
| Primary polar radius in units of orbital separation (r1p) | 0.478 |
| Secondary polar radius in units of orbital separation (r2p) | 0.2412 |
| Surface potential (Ω) | 2.296 |
| Orbital separation in solar radii (a [R]) | 5 |
|---|---|
| Primary radius in solar units (R1 [R]) | 2.56 |
| Secondary radius in solar units (R2 [R]) | 1.29 |
| Primary mass in solar units (M1 [M]) | 1.78 |
| Secondary mass in solar units (M2 [M]) | 0.4 |
| Primary temperature in kelvins (T1 [K]) | 7700 |
| Secondary temperature in Kelvins (T2 [K]) | 7003 |
| Primary luminosity in solar units (L1 [L]) | 12.2 |
| Secondary luminosity in solar units (L2 [L]) | 1.59 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) | 3.04 |
| Orbital period in days (P [d]) | 0.877376 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | 0.024106 |
| Cyclic period variation in years (Pc [y]) | 10.2 |
| Designation | Gaia DR2 1407792805347385984 |
|---|---|
| RA | 252:22:48.76572 |
| DEC | 47:06:28.875096 |
| l | 73.07116063 |
| b | 39.89029271 |
| G magnitude | 9.427932 |
| G_bp magnitude | 9.600086 |
| G_rp magnitude | 9.133879 |
| Radial velocity [km/s] | |
| Parallax | 2.587277415 |
| Distance [pc] | 386.506678 |
| Temperature [K] | 7538 |
| Radius [R] | 2.5462599 |
| Luminosity [L] | 18.859262 |
| Simbad link | V921 Her |
|---|---|
| J magnitude | 9.043 |
| H magnitude | 8.874 |
| K magnitude | 8.83 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 9.8 |
| Johnson_V magnitude | 9.5 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 9.4279 |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |