All names: SDSS J214042.10-054114.2, Gaia EDR3 2671209215590782208, WDJ214042.1-054113.90, Gaia DR2 2671209215590782208, WDJ214042.10-054113.90, Gaia DR3 2671209215590782208, J2140-0541, SDSS J214042.11-054114.3, GALEX J214042.0-054114
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 40 42.12 (0.09) | 21 40 42.12 | 21 40 42.12 | 21 40 42.10 (0.09) | 21 40 42.12 | |||||
| Declination | -05 41 15.19 (0.06) | -05 41 15.15 | -05 41 15.19 | -05 41 13.91 (0.06) | -05 41 15.15 | |||||
| Spectral type | DC | DC | DB | DC | ||||||
| Effective temperature | [K] | 10695.0 (92) | 10694.0 (92) | 11202.0 (140) | ||||||
| log(g) | [cgs] | 7.96 (0.02) | 7.98 (0.02) | 8.07 (0.02) | ||||||
| Mass | [M☉] | 0.561 (0.01) | 0.568 (0.01) | 0.628 (0.02) | ||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | -4.8 | -4.8 | ||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 10.19 (0.08) | 10.27 (0.1) | 10.19 | 10.19 (0.09) | 10.27 (0.1) | ||||
| Distance | [pc] | 98.18 (0.8) | 97.41 (1) | 98.18 | 98.18 (0.8) | 97.41 (1) | ||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 18.01543049 (0.1) | 18.08420328 (0.2) | 18.015 (0.1) | 18.08420328 | |||||
| Proper motion (declination) | [mas/yr] | -79.9292607 (0.07) | -80.29752418 (0.2) | -79.929 (0.07) | -80.29752418 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 17.05 (0.009) | 17.07 (0.009) | ||||||||
| g magnitude | 16.95 (0.004) | 16.97 (0.004) | ||||||||
| r magnitude | 17.13 (0.005) | 17.13 (0.005) | ||||||||
| i magnitude | 17.30 (0.006) | 17.30 (0.006) | ||||||||
| z magnitude | 17.50 (0.01) | 17.49 (0.02) | ||||||||
| G magnitude | 17.03 (0.004) | 17.06 | 17.03 | 17.03 (0.003) | 17.06 | |||||
| BP magnitude | 17.04 (0.004) | 17.02 | 17.02 | |||||||
| RP magnitude | 17.00 (0.008) | 17.01 | 17.01 | |||||||
| Pan g magnitude | 17.02 (0.003) | |||||||||
| Pan r magnitude | 17.14 (0.003) | |||||||||
| Pan i magnitude | 17.33 (0.003) | |||||||||
| Pan z magnitude | 17.50 (0.006) | |||||||||
| Pan y magnitude | 17.63 (0.01) | |||||||||
| E(B-V) | 0.004 | |||||||||
* 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.