IV Dra
| Simbad link | IV Dra |
|---|---|
| Source publication | Robb, R. M. (1998) - Photometry of the W UMa System GSC 3869 484 |
| ADS link | 1998IBVS.4610....1R |
| Name in Source publication | GSC 3869-484 |
| Orbital period in days (P [d]) | 0.26805 |
| Mass ratio (q) | 0.5 |
| Mass ratio determination | Photometric |
| Type | W |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? |
| Solver | Binary Maker |
|---|---|
| Orbital period in days (P [d]) | 0.26805 |
| Mass ratio (q) | 0.5 |
| Orbital inclination in degrees (i [o]) | 69 |
| Fillout (f) | 0.2 |
| Primary temperature in Kelvins (T1 [K]) | 5400 |
| Secondary temperature in Kelvins (T2 [K]) | 5600 |
| Primary polar radius in units of orbital separation (r1p) | 0.4245 |
| Secondary polar radius in units of orbital separation (r2p) | 0.3104 |
| Surface potential (Ω) | 2.8161 |
| Orbital separation in solar radii (a [R]) | |
|---|---|
| Primary radius in solar units (R1 [R]) | |
| Secondary radius in solar units (R2 [R]) | |
| Primary mass in solar units (M1 [M]) | |
| Secondary mass in solar units (M2 [M]) | |
| Primary temperature in kelvins (T1 [K]) | 5400 |
| Secondary temperature in Kelvins (T2 [K]) | 5600 |
| Primary luminosity in solar units (L1 [L]) | |
| Secondary luminosity in solar units (L2 [L]) | |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) |
| Designation | Gaia DR2 1597680284530218240 |
|---|---|
| RA | 234:05:48.4296 |
| DEC | 53:19:11.274996 |
| l | 85.2026616 |
| b | 49.94891897 |
| G magnitude | 13.270529 |
| G_bp magnitude | 13.827207 |
| G_rp magnitude | 12.566169 |
| Radial velocity [km/s] | |
| Parallax | 3.009563407 |
| Distance [pc] | 332.274109 |
| Temperature [K] | 5145.5 |
| Radius [R] | 0.8288301 |
| Luminosity [L] | 0.43384647 |
| Simbad link | IV Dra |
|---|---|
| J magnitude | 11.618 |
| H magnitude | 11.142 |
| K magnitude | 10.981 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 14.27 |
| Johnson_V magnitude | 13.32 |
| Johnson_R magnitude | |
| Johnson_I magnitude | |
| Sloan_u magnitude | |
| Sloan_g magnitude | 13.2705 |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |