All names: Gaia DR3 2792345190466382720, USNO-B1.0 1053-00004440, WD 0019+150, SDSS J002227.80+151920.7, PHL 802, SDSS J002227.79+151920.9, PG 0019+150, LB 439, SDSS J002227.80+151920.75, Gaia EDR3 2792345190466382720, GALEX J002227.7+151921, Gaia DR2 2792345190466382720
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Bedard et al. 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 22 27.80 (0.09) | 00 22 27.80 (0.1) | 00 22 27.80 | 00 22 27.80 (0.09) | 00 22 27.43 | |||||||
| Declination | 15 19 20.74 (0.07) | 15 19 20.75 (0.1) | 15 19 20.74 | 15 19 20.94 (0.07) | 15 19 08.04 | |||||||
| Spectral type | DA | DA | DA | DA | DA1.6 | DA | DA | |||||
| Effective temperature | [K] | 31430.0 (107) | 31612.0 (79) | 31710.0 (484) | 30604.0 (1148) | |||||||
| log(g) | [cgs] | 8.21 (0.03) | 8.28 (0.02) | 8.14 (0.06) | 8.23 (0.04) | |||||||
| Mass | [M☉] | 0.77 (0.01) | 0.797 (0.01) | 0.73 (0.03) | 0.781 (0.04) | |||||||
| log(Luminosity) | [L☉] | -0.94 (0.02) | ||||||||||
| Cooling age | [Gyr] | 0.0095 (0.0006) | ||||||||||
| 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] | 4.13 (0.1) | 4.01 (0.2) | 4.13 | 4.13 (0.1) | |||||||
| Distance | [pc] | 242.22 (6) | 249.13 (1e+01) | 292.00 | 242.22 | 242.22 (6) | ||||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.793862576 (0.1) | 2.817347977 (0.3) | 2.794 (0.1) | ||||||||
| Proper motion (declination) | [mas/yr] | -12.1157547 (0.09) | -12.22363132 (0.2) | -12.116 (0.09) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 16.70 | |||||||||||
| V magnitude | 17.40 | |||||||||||
| R magnitude | 17.30 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 17.93 (0.06) | |||||||||||
| H magnitude | 18.00 (0.1) | |||||||||||
| K magnitude | ||||||||||||
| u magnitude | 16.78 (0.02) | 16.78 (0.007) | ||||||||||
| g magnitude | 17.06 (0.01) | 17.04 (0.004) | ||||||||||
| r magnitude | 17.50 (0.01) | 17.51 (0.006) | ||||||||||
| i magnitude | 17.84 (0.01) | 17.85 (0.007) | ||||||||||
| z magnitude | 18.20 (0.03) | 18.20 (0.03) | ||||||||||
| G magnitude | 17.28 (0.005) | 17.31 | 17.28 | 17.28 (0.003) | ||||||||
| BP magnitude | 17.17 (0.005) | 17.10 | ||||||||||
| RP magnitude | 17.55 (0.01) | 17.55 | ||||||||||
| Pan g magnitude | 17.09 (0.003) | |||||||||||
| Pan r magnitude | 17.50 (0.004) | |||||||||||
| Pan i magnitude | 17.87 (0.005) | |||||||||||
| Pan z magnitude | 18.14 (0.005) | |||||||||||
| Pan y magnitude | 18.31 (0.02) | |||||||||||
| E(B-V) | 0.028 | |||||||||||
* 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.