All names: Gaia DR3 2615968858057952640, J2212-0901, Gaia EDR3 2615968858057952640, TIC 38198155, USNO-A2.0 0750-21132677, SDSS J221218.15-090146.8, WDJ221218.15-090146.80, Gaia DR2 2615968858057952640, 2MASS J22121815-0901468, GALEX J221218.1-090145
| 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 | 22 12 18.20 (0.06) | 22 12 18.20 | 22 12 18.20 | 22 12 18.15 (0.06) | 22 12 18.20 | |||||
| Declination | -09 01 46.37 (0.05) | -09 01 46.38 | -09 01 46.37 | -09 01 46.80 (0.05) | -09 01 46.38 | |||||
| Spectral type | DC | DC | DB | DC | ||||||
| Effective temperature | [K] | 10646.0 (104) | 10646.0 (104) | 10910.0 (159) | ||||||
| log(g) | [cgs] | 8.21 (0.01) | 8.21 (0.02) | 8.29 (0.02) | ||||||
| Mass | [M☉] | 0.713 (0.01) | 0.71 (0.01) | 0.763 (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] | 15.03 (0.07) | 14.98 (0.1) | 15.03 | 15.03 (0.07) | 14.98 (0.1) | ||||
| Distance | [pc] | 66.55 (0.3) | 66.76 (0.5) | 66.55 | 66.55 (0.3) | 66.76 (0.5) | ||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 40.72678772 (0.07) | 40.82927587 (0.1) | 40.727 (0.07) | 40.82927587 | |||||
| Proper motion (declination) | [mas/yr] | 26.8607899 (0.06) | 27.03241633 (0.1) | 26.861 (0.06) | 27.03241633 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 15.90 (0.3) | |||||||||
| V magnitude | ||||||||||
| R magnitude | 16.50 (0.3) | |||||||||
| I magnitude | ||||||||||
| J magnitude | 16.39 (0.1) | |||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 16.60 (0.006) | 16.60 (0.006) | ||||||||
| g magnitude | 16.49 (0.004) | 16.49 (0.004) | ||||||||
| r magnitude | 16.65 (0.004) | 16.65 (0.004) | ||||||||
| i magnitude | 16.81 (0.005) | 16.81 (0.005) | ||||||||
| z magnitude | 17.00 (0.01) | 17.00 (0.01) | ||||||||
| G magnitude | 16.56 (0.005) | 16.58 | 16.56 | 16.56 (0.003) | 16.58 | |||||
| BP magnitude | 16.58 (0.005) | 16.55 | 16.55 | |||||||
| RP magnitude | 16.54 (0.01) | 16.52 | 16.52 | |||||||
| Pan g magnitude | 16.55 (0.004) | |||||||||
| Pan r magnitude | 16.66 (0.002) | |||||||||
| Pan i magnitude | 16.85 (0.002) | |||||||||
| Pan z magnitude | 17.01 (0.006) | |||||||||
| Pan y magnitude | 17.17 (0.005) | |||||||||
| E(B-V) | 0.001 | |||||||||
* 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.