44 Boo
| Simbad link | 44 Boo |
|---|---|
| Source publication | Hill, G. (1989) - Studies of late-type binaries. I. The physical parameters of 44i Bootis ABC. |
| ADS link | 1989A&A...211...81H |
| Name in Source publication | 44 Boo |
| Orbital period in days (P [d]) | 0.267812 |
| Mass ratio (q) | 0.56 |
| Mass ratio determination | Spectroscopic |
| Temperature determination | Unknown |
| Type | A |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | LIGHT2 |
|---|---|
| Orbital period in days (P [d]) | 0.267812 |
| Mass ratio (q) | 0.56 |
| Orbital inclination in degrees (i [o]) | 72.8 |
| Fillout (f) | 0 |
| Primary temperature in Kelvins (T1 [K]) | 5300 |
| Secondary temperature in Kelvins (T2 [K]) | 5035 |
| Primary polar radius in units of orbital separation (r1p) | 0.405 |
| Secondary polar radius in units of orbital separation (r2p) | 0.3085 |
| Surface potential (Ω) | 2.9869 |
| Orbital separation in solar radii (a [R]) | 2.01 |
|---|---|
| Primary radius in solar units (R1 [R]) | 0.87 |
| Secondary radius in solar units (R2 [R]) | 0.66 |
| Primary mass in solar units (M1 [M]) | 0.98 |
| Secondary mass in solar units (M2 [M]) | 0.55 |
| Primary temperature in kelvins (T1 [K]) | 5300 |
| Secondary temperature in Kelvins (T2 [K]) | 5035 |
| Primary luminosity in solar units (L1 [L]) | 0.51 |
| Secondary luminosity in solar units (L2 [L]) | 0.24 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) |
| Orbital period in days (P [d]) | 0.267812 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | |
| Cyclic period variation in years (Pc [y]) |
| Designation | Gaia DR2 1588936555749388928 |
|---|---|
| RA | 225:56:42.04896 |
| DEC | 47:39:16.012584 |
| l | 80.3714647 |
| b | 57.06707415 |
| G [mag] | 5.545682 |
| G_bp [mag] | 5.0029254 |
| G_rp [mag] | 4.4764333 |
| Parallax | 78.08810047 |
| Distance [pc] | 0.000615963 |
| Temperature [K] | 5095.6333 |
| Surface gravity log(g) [cm/s2] | |
| Metallicity [Fe/H] | |
| Monochromatic extinction A0 [mag] | |
| Radius [R] | |
| Luminosity [L] |
| Simbad link | 44 Boo |
|---|---|
| J magnitude | 3.42 |
| H magnitude | 3.12 |
| K magnitude | 3.01 |
| Johnson_U magnitude | |
| Johnson_B magnitude | |
| Johnson_V magnitude | |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |