AS CrB
| Simbad link | AS CrB |
|---|---|
| Source publication | Liu, Liang (2017) - First four-color photometric investigation of extreme mass-ratio contact binary AS coronae borealis |
| ADS link | 2017NewA...51....1L |
| Name in Source publication | AS CrB |
| Orbital period in days (P [d]) | 0.38066 |
| Mass ratio (q) | 0.17 |
| Mass ratio determination | Photometric |
| Type | A |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.38066 |
| Mass ratio (q) | 0.17 |
| Orbital inclination in degrees (i [o]) | 78.4 |
| Fillout (f) | 0.59 |
| Primary temperature in Kelvins (T1 [K]) | 6500 |
| Secondary temperature in Kelvins (T2 [K]) | 6498 |
| Primary polar radius in units of orbital separation (r1p) | 0.5146 |
| Secondary polar radius in units of orbital separation (r2p) | 0.2422 |
| Surface potential (Ω) | 2.0961 |
| Orbital separation in solar radii (a [R]) | 2.51 |
|---|---|
| Primary radius in solar units (R1 [R]) | 1.4 |
| Secondary radius in solar units (R2 [R]) | 0.67 |
| Primary mass in solar units (M1 [M]) | 1.25 |
| Secondary mass in solar units (M2 [M]) | 0.21 |
| Primary temperature in kelvins (T1 [K]) | 6500 |
| Secondary temperature in Kelvins (T2 [K]) | 6498 |
| Primary luminosity in solar units (L1 [L]) | 3.2 |
| Secondary luminosity in solar units (L2 [L]) | 0.72 |
| Distance in parsecs (d [pc]) | 459 |
| Age in gigayears (τ [gyr]) | 4.22 |
| Orbital period in days (P [d]) | 0.38066 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | 0.029894 |
| Cyclic period variation in years (Pc [y]) |
| Designation | Gaia DR2 1372013563108357760 |
|---|---|
| RA | 240:03:37.30824 |
| DEC | 35:12:32.02488 |
| l | 56.37778889 |
| b | 49.19714044 |
| G magnitude | 11.576787 |
| G_bp magnitude | 11.805562 |
| G_rp magnitude | 11.108617 |
| Radial velocity [km/s] | 0.41072906 |
| Parallax | 2.586837168 |
| Distance [pc] | 386.572457 |
| Temperature [K] | 6529.3335 |
| Radius [R] | 1.2479764 |
| Luminosity [L] | 2.5502505 |
| Orbital period [d] | 0.380658 |
|---|---|
| Temperature [K] | 6198.34 |
| Surface gravity (log(g)) | 4.197 |
| Metallicity ([Fe/H]) | -0.561 |
| Simbad link | AS CrB |
|---|---|
| J magnitude | 10.554 |
| H magnitude | 10.327 |
| K magnitude | 10.26 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 11.97 |
| Johnson_V magnitude | 11.36 |
| Johnson_R magnitude | 11 |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 11.5768 |
| Sloan_r magnitude | 11 |
| Sloan_i magnitude | |
| Sloan_z magnitude |