All names: 2MASS J23273958+4947181, SDSS J232739.61+494718.2, SDSSJ232739.62+494718.2, TIC 25477905, Gaia DR3 1942976825995869824, SDSS J232739.62+494718.2, Gaia DR2 1942976825995869824, GALEX J232739.5+494718
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 23 27 39.62 | 23 27 39.61 (0.03) | ||
| Declination | 49 47 18.22 | 49 47 18.24 (0.03) | ||
| Spectral type | sd | sd | ||
| 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] | 0.41 (0.06) | 0.50 (0.04) | |
| Distance | [pc] | 2424.24 (329) | 2008.84 (151) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.729 (0.08) | -3.739 (0.04) | |
| Proper motion (declination) | [mas/yr] | -1.786 (0.07) | -1.725 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.09 (0.09) | 16.09 (0.09) | ||
| H magnitude | 15.94 (0.2) | 15.94 (0.2) | ||
| K magnitude | 15.65 | |||
| u magnitude | 15.29 (0.004) | 15.31 (0.01) | ||
| g magnitude | 15.56 (0.004) | 15.59 (0.008) | ||
| r magnitude | 15.98 (0.005) | 15.99 (0.005) | ||
| i magnitude | 16.27 (0.005) | 16.25 (0.01) | ||
| z magnitude | 16.55 (0.009) | 16.55 (0.01) | ||
| G magnitude | 15.78 (0.001) | 15.76 (0.003) | ||
| BP magnitude | 15.62 (0.006) | |||
| RP magnitude | 15.94 (0.004) | |||
| Pan g magnitude | 15.66 (0.003) | |||
| Pan r magnitude | 15.98 (0.001) | |||
| Pan i magnitude | 16.29 (0.002) | |||
| Pan z magnitude | 16.52 (0.003) | |||
| Pan y magnitude | 16.67 (0.006) | |||
| E(B-V) | 0.125 | |||
* 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.