V789 Her
| Simbad link | V789 Her |
|---|---|
| Source publication | Li, K. (2018) - Photometric Study of Two Totally Eclipsing Contact Binaries: V789 Her and V1007 Cas |
| ADS link | 2018PASP..130g4201L |
| Name in Source publication | V789 Her |
| Orbital period in days (P [d]) | 0.320045 |
| Mass ratio (q) | 0.24 |
| Mass ratio determination | Photometric |
| Type | W |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.320045 |
| Mass ratio (q) | 0.24 |
| Orbital inclination in degrees (i [o]) | 78.2 |
| Fillout (f) | 0.24 |
| Primary temperature in Kelvins (T1 [K]) | 5005 |
| Secondary temperature in Kelvins (T2 [K]) | 5470 |
| Primary polar radius in units of orbital separation (r1p) | 0.4827 |
| Secondary polar radius in units of orbital separation (r2p) | 0.2528 |
| Surface potential (Ω) | 2.2837 |
| Orbital separation in solar radii (a [R]) | 2.2 |
|---|---|
| Primary radius in solar units (R1 [R]) | 1.15 |
| Secondary radius in solar units (R2 [R]) | 0.62 |
| Primary mass in solar units (M1 [M]) | 1.13 |
| Secondary mass in solar units (M2 [M]) | 0.27 |
| Primary temperature in kelvins (T1 [K]) | 5005 |
| Secondary temperature in Kelvins (T2 [K]) | 5470 |
| Primary luminosity in solar units (L1 [L]) | 1.48 |
| Secondary luminosity in solar units (L2 [L]) | 0.43 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) | 4.97 |
| Orbital period in days (P [d]) | 0.320045 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | |
| Cyclic period variation in years (Pc [y]) | 29.2 |
| Simbad link | V789 Her |
|---|---|
| J magnitude | 13.495 |
| H magnitude | 13.031 |
| K magnitude | 12.967 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 14.9 |
| Johnson_V magnitude | 14.47 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 14.4667 |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |