YY CrB
| Simbad link | YY CrB |
|---|---|
| Source publication | Gazeas, K. D. (2005) - Physical Parameters of Components in Close Binary Systems: IV |
| ADS link | 2005AcA....55..123G |
| Name in Source publication | YY CrB |
| Orbital period in days (P [d]) | 0.376564 |
| Mass ratio (q) | 0.23 |
| 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]) | 0.376564 |
| Mass ratio (q) | 0.23 |
| Orbital inclination in degrees (i [o]) | 79.5 |
| Fillout (f) | 0.23 |
| Primary temperature in Kelvins (T1 [K]) | 6100 |
| Secondary temperature in Kelvins (T2 [K]) | 6499 |
| Primary polar radius in units of orbital separation (r1p) | 0.4835 |
| Secondary polar radius in units of orbital separation (r2p) | 0.2513 |
| Surface potential (Ω) | 2.277 |
| Orbital separation in solar radii (a [R]) | 2.64 |
|---|---|
| Primary radius in solar units (R1 [R]) | 1.38 |
| Secondary radius in solar units (R2 [R]) | 0.69 |
| Primary mass in solar units (M1 [M]) | 1.39 |
| Secondary mass in solar units (M2 [M]) | 0.34 |
| Primary temperature in kelvins (T1 [K]) | 6100 |
| Secondary temperature in Kelvins (T2 [K]) | 6499 |
| Primary luminosity in solar units (L1 [L]) | 2.35 |
| Secondary luminosity in solar units (L2 [L]) | 0.75 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) | 3.55 |
| Orbital period in days (P [d]) | 0.376564 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | -0.058121 |
| Cyclic period variation in years (Pc [y]) | 12.68 |
| Period study | Yu, Yun-Xia (2015) - Orbital period changes of YY Coronae Borealis |
| ADS link | 2015PASJ...67...42Y |
| Designation | Gaia DR2 1376446965790270592 |
|---|---|
| RA | 237:38:05.05752 |
| DEC | 37:50:07.71216 |
| l | 60.48868021 |
| b | 51.13834011 |
| G magnitude | 8.586919 |
| G_bp magnitude | 8.86309 |
| G_rp magnitude | 8.11415 |
| Radial velocity [km/s] | |
| Parallax | 11.07498492 |
| Distance [pc] | 90.293577 |
| Temperature [K] | 6125.05 |
| Radius [R] | 1.3163756 |
| Luminosity [L] | 2.1973178 |
| Simbad link | YY CrB |
|---|---|
| J magnitude | 7.64 |
| H magnitude | 7.406 |
| K magnitude | 7.309 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 9.28 |
| Johnson_V magnitude | 8.69 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 8.5869 |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |