V830 Cep
| Simbad link | V830 Cep |
|---|---|
| Source publication | Li, Kai (2021) - Photometric Study and Absolute Parameter Estimation of Six Totally Eclipsing Contact Binaries |
| ADS link | 2021AJ....162...13L |
| Name in Source publication | V830 Cep |
| Orbital period in days (P [d]) | 0.260134 |
| Mass ratio (q) | 0.23 |
| Mass ratio determination | Photometric |
| Temperature determination | Unknown |
| Type | W |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.260134 |
| Mass ratio (q) | 0.23 |
| Orbital inclination in degrees (i [o]) | 88.6 |
| Fillout (f) | 0.26 |
| Primary temperature in Kelvins (T1 [K]) | 6021 |
| Secondary temperature in Kelvins (T2 [K]) | 6147 |
| Primary polar radius in units of orbital separation (r1p) | 0.484 |
| Secondary polar radius in units of orbital separation (r2p) | 0.255 |
| Surface potential (Ω) | 2.262 |
| Orbital separation in solar radii (a [R]) | 1.74 |
|---|---|
| Primary radius in solar units (R1 [R]) | 0.91 |
| Secondary radius in solar units (R2 [R]) | 0.47 |
| Primary mass in solar units (M1 [M]) | 0.84 |
| Secondary mass in solar units (M2 [M]) | 0.19 |
| Primary temperature in kelvins (T1 [K]) | 6021 |
| Secondary temperature in Kelvins (T2 [K]) | 6147 |
| Primary luminosity in solar units (L1 [L]) | 0.98 |
| Secondary luminosity in solar units (L2 [L]) | 0.29 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) |
| Orbital period in days (P [d]) | 0.260134 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | -0.007344 |
| Cyclic period variation in years (Pc [y]) |
| Designation | Gaia DR3 2271215986442043264 |
|---|---|
| RA | 313:40:54.326784 |
| DEC | 69:59:58.218789 |
| l | 105.15723269463918 |
| b | 15.813990482980934 |
| G [mag] | 13.362963 |
| G_bp [mag] | 13.863765 |
| G_rp [mag] | 12.687039 |
| Parallax | 2.872030663811315 |
| Distance [pc] | 346.3563 |
| Temperature [K] | 5248.452 |
| Surface gravity log(g) [cm/s2] | 4.5325 |
| Metallicity [Fe/H] | 0.2956 |
| Monochromatic extinction A0 [mag] | 0.1907 |
| Radius [R] | 0.94 |
| Luminosity [L] | 0.462 |
| Simbad link | V830 Cep |
|---|---|
| J magnitude | 12.066 |
| H magnitude | 11.581 |
| K magnitude | 11.448 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 14.68 |
| Johnson_V magnitude | 13.86 |
| Johnson_R magnitude | 13.23 |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 14.009 |
| Sloan_r magnitude | 13.267 |
| Sloan_i magnitude | 13.14 |
| Sloan_z magnitude |