All names: Gaia DR3 2253612259822558848, 2MASS J18540346+6427271, SDSS J185403.39+642727.2, Gaia EDR3 2253612259822558848, TIC 233611115, Gaia DR2 2253612255525753728, GALEX J185403.4+642727, SDSSJ185403.39+642727.2
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 18 54 03.41 (0.04) | 18 54 03.39 | 18 54 03.41 (0.04) | ||
| Declination | 64 27 27.08 (0.05) | 64 27 27.28 | 64 27 27.06 (0.05) | ||
| 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] | 0.55 (0.05) | 0.59 (0.05) | 0.55 (0.05) | |
| Distance | [pc] | 1807.66 (154) | 1701.26 (141) | 1807.66 (154) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 1.178 (0.06) | 1.153 (0.09) | 1.178 (0.06) | |
| Proper motion (declination) | [mas/yr] | 1.304 (0.06) | 1.123 (0.1) | 1.304 (0.06) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.59 (0.1) | 16.59 (0.1) | |||
| H magnitude | 16.53 (0.3) | 16.53 (0.3) | |||
| K magnitude | 17.06 | ||||
| u magnitude | 15.51 (0.005) | 15.50 (0.01) | |||
| g magnitude | 15.75 (0.003) | 15.77 (0.01) | |||
| r magnitude | 16.22 (0.004) | 16.24 (0.01) | |||
| i magnitude | 16.55 (0.005) | 16.56 (0.009) | |||
| z magnitude | 16.89 (0.01) | 16.90 (0.02) | |||
| G magnitude | 15.98 (0.003) | 15.99 (0.001) | 15.98 (0.003) | ||
| BP magnitude | 15.84 (0.004) | 15.79 (0.007) | |||
| RP magnitude | 16.24 (0.006) | 16.24 (0.005) | |||
| Pan g magnitude | 15.83 (0.004) | ||||
| Pan r magnitude | 16.24 (0.002) | ||||
| Pan i magnitude | 16.58 (0.002) | ||||
| Pan z magnitude | 16.83 (0.005) | ||||
| Pan y magnitude | 17.01 (0.01) | ||||
| E(B-V) | 0.046 | ||||
* 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.