All names: WISEA J084214.98-022225.7, Gaia EDR3 3072348715677121280, SDSS J084214.99-022226.7, WDJ084215.02-022226.79, Gaia DR2 3072348715677121280, Gaia DR3 3072348715677121280, WISE J084214.95-022226.5, TIC 149767969, 2MASS J08421502-0222268, DENIS J084215.0-022226, J0842-0222, UCAC4 439-046693, SDSS J084214.98-022226.7, GALEX J084215.0-022225
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Jewett et al. 2024 | Kilic et al. 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 42 14.94 (0.05) | 08 42 14.95 | 08 42 14.94 | 08 42 15.02 (0.05) | 08 42 14.95 | ||||||||
| Declination | -02 22 26.66 (0.03) | -02 22 26.66 | -02 22 26.66 | -02 22 26.79 (0.03) | -02 22 26.66 | ||||||||
| Spectral type | DAH? | DAH? | DAH?DBH? | DA: | DAH?DBH? | ||||||||
| Effective temperature | [K] | 23910.0 (212) | 23910.0 (212) | 23910.0 (211) | 19017.0 | 20945.0 | 25152.0 (307) | ||||||
| log(g) | [cgs] | 8.90 (0.008) | 8.91 | 8.90 (0.008) | 8.72 | 8.88 | 8.96 (0.01) | ||||||
| Mass | [M☉] | 1.162 (0.004) | 1.162 (0.004) | 1.161 (0.004) | 1.064 | 1.135 | 1.188 (0.006) | ||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.2600 (0.01) | 0.3396 | 0.3401 | |||||||||
| 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] | 16.32 (0.06) | 16.31 (0.07) | 16.32 | 16.32 (0.06) | 16.31 (0.07) | |||||||
| Distance | [pc] | 61.26 (0.2) | 61.30 (0.3) | 61.26 | 61.26 (0.2) | 61.30 (0.3) | |||||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -72.66915904 (0.07) | -72.75570294 (0.1) | -72.669 (0.07) | -72.75570294 | ||||||||
| Proper motion (declination) | [mas/yr] | 8.531547667 (0.05) | 8.57117367 (0.09) | 8.532 (0.05) | 8.57117367 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 15.99 (0.03) | ||||||||||||
| V magnitude | 15.95 (0.04) | ||||||||||||
| R magnitude | |||||||||||||
| I magnitude | 16.29 (0.06) | ||||||||||||
| J magnitude | 16.37 (0.1) | ||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 15.61 (0.005) | 15.57 (0.004) | |||||||||||
| g magnitude | 15.84 (0.004) | 15.82 (0.003) | |||||||||||
| r magnitude | 16.15 (0.004) | 16.15 (0.003) | |||||||||||
| i magnitude | 16.60 (0.005) | 16.59 (0.004) | |||||||||||
| z magnitude | 16.77 (0.01) | 16.78 (0.01) | |||||||||||
| G magnitude | 16.00 (0.003) | 16.03 | 16.00 | 16.00 (0.003) | 16.03 | ||||||||
| BP magnitude | 15.90 (0.003) | 15.86 | 15.86 | ||||||||||
| RP magnitude | 16.22 (0.003) | 16.20 | 16.20 | ||||||||||
| Pan g magnitude | 15.88 (0.002) | ||||||||||||
| Pan r magnitude | 16.17 (0.002) | ||||||||||||
| Pan i magnitude | 16.61 (0.001) | ||||||||||||
| Pan z magnitude | 16.75 (0.005) | ||||||||||||
| Pan y magnitude | 16.88 (0.004) | ||||||||||||
| 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.