All names: SDSS J091236.86+394614.5, Gaia EDR3 815221424559052928, GALEX 2485461565247064130, Gaia DR2 815221424558586368, USNO-A2.0 1275-07467212
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 09 12 36.87 (0.3) | 09 12 36.87 (0.6) | ||
| Declination | 39 46 14.38 (0.3) | 39 46 14.67 (0.5) | ||
| Spectral type | DA | |||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 2.43 (0.4) | 3.83 (0.8) | |
| Distance | [pc] | 411.98 (69) | 261.09 (55) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.378 (0.4) | -0.022 (1) | |
| Proper motion (declination) | [mas/yr] | -17.341 (0.4) | -18.082 (0.9) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 18.90 (0.3) | |||
| V magnitude | ||||
| R magnitude | 19.20 (0.3) | |||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 19.85 (0.04) | |||
| g magnitude | 19.44 (0.01) | |||
| r magnitude | 19.58 (0.02) | |||
| i magnitude | 19.50 (0.02) | |||
| z magnitude | 19.14 (0.05) | |||
| G magnitude | 19.46 (0.004) | 19.48 (0.005) | ||
| BP magnitude | 19.53 (0.05) | |||
| RP magnitude | 18.98 (0.04) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.014 | |||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.