All names: Gaia DR2 4951125156507440384, USNO-B1.0 0494-00021894, MCT 0219-4049, WD 0219-408, Gaia EDR3 4951125156507440384, 2MASS J02211975-4035298, Gaia DR3 4951125156507440384, HE 0219-4049, GALEX J022119.7-403530
| Parameter | Unit | Gaia EDR3 | Bergeron et al. 2021 | Gaia DR2 | Stilism | Koester et al. 2009 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 21 19.78 (0.03) | 02 21 19.78 (0.03) | 02 21 19.78 | 02 21 19.72 (0.03) | 02 21 19.70 | ||||
| Declination | -40 35 29.32 (0.03) | -40 35 29.33 (0.04) | -40 35 29.32 | -40 35 29.40 (0.03) | -40 35 25.44 | ||||
| Spectral type | DA | DA | DA | DA3.3 | |||||
| Effective temperature | [K] | 15759.0 (295) | 15373.0 (36) | 15214.0 (173) | |||||
| log(g) | [cgs] | 8.09 (0.05) | 7.89 (0.005) | 7.99 (0.01) | |||||
| Mass | [M☉] | 0.669 (0.03) | 0.606 (0.009) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | 0.2038 | |||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| log(C/H) | |||||||||
| log(N/H) | |||||||||
| log(O/H) | |||||||||
| log(Na/H) | |||||||||
| log(Mg/H) | |||||||||
| log(Al/H) | |||||||||
| log(Si/H) | |||||||||
| log(P/H) | |||||||||
| log(S/H) | |||||||||
| log(Sc/H) | |||||||||
| log(Ti/H) | |||||||||
| log(Cr/H) | |||||||||
| log(Mn/H) | |||||||||
| log(Fe/H) | |||||||||
| log(Ni/H) | |||||||||
| Parallax | [mas] | 9.95 (0.04) | 9.91 (0.05) | 9.95 | 9.95 (0.04) | ||||
| Distance | [pc] | 100.55 (0.4) | 100.00 | 100.88 (0.5) | 100.55 | 100.55 (0.4) | |||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 41.92990031 (0.03) | 41.82528884 (0.06) | 41.93 (0.03) | |||||
| Proper motion (declination) | [mas/yr] | 4.904748344 (0.04) | 4.955134505 (0.07) | 4.905 (0.04) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 16.20 | 16.50 | |||||||
| V magnitude | |||||||||
| R magnitude | 15.90 | ||||||||
| I magnitude | |||||||||
| J magnitude | 16.77 (0.1) | ||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | |||||||||
| g magnitude | |||||||||
| r magnitude | |||||||||
| i magnitude | |||||||||
| z magnitude | |||||||||
| G magnitude | 16.28 (0.003) | 16.30 | 16.28 | 16.28 (0.003) | |||||
| BP magnitude | 16.24 (0.003) | 16.22 | |||||||
| RP magnitude | 16.40 (0.004) | 16.39 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| 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.