All names: Gaia DR2 2501224305619721984, J0227+0023, LAMOST J022755.52+002338.3, TIC 422847044, WD 0225+001, Gaia EDR3 2501224305619721984, WDJ022755.52+002338.71, USNO-B1.0 0903-00025826, SDSS J022755.52+002338.5, UCAC4 452-003197, HS 0225+0010, GALEX J022755.5+002338, Gaia DR3 2501224305619721984, 2MASS J02275551+0023382, LAMOST J022755.52+002338.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Koester et al. 2009 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 27 55.54 (0.04) | 02 27 55.54 (0.06) | 02 27 55.54 | 02 27 55.52 (0.04) | 02 27 55.54 | 02 27 54.94 | ||||||||
| Declination | 00 23 38.09 (0.04) | 00 23 38.11 (0.06) | 00 23 38.09 | 00 23 38.71 (0.04) | 00 23 38.11 | 00 23 35.88 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | |||||||||
| Effective temperature | [K] | 11618.0 (167) | 11617.0 (167) | 11362.0 | 11998.0 | 13337.0 (80) | 12758.0 (191) | |||||||
| log(g) | [cgs] | 7.97 (0.01) | 7.98 (0.01) | 7.95 | 7.95 | 7.83 (0.01) | 8.07 (0.01) | |||||||
| Mass | [M☉] | 0.59 (0.01) | 0.592 (0.01) | 0.576 | 0.556 | 0.647 (0.009) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.4054 | 0.3572 | |||||||||||
| 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] | 13.42 (0.05) | 13.45 (0.07) | 13.42 | 13.42 (0.05) | 13.45 (0.07) | ||||||||
| Distance | [pc] | 74.52 (0.3) | 74.33 (0.4) | 74.52 | 74.52 (0.3) | 74.33 (0.4) | ||||||||
| Composition | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 16.23669519 (0.06) | 16.37395687 (0.1) | 16.237 (0.06) | 16.37395687 | |||||||||
| Proper motion (declination) | [mas/yr] | -38.46193987 (0.05) | -38.61221354 (0.1) | -38.462 (0.05) | -38.61221354 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 15.90 | 16.02 (0.04) | ||||||||||||
| V magnitude | 15.38 (0.01) | |||||||||||||
| R magnitude | 15.90 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.15 (0.09) | |||||||||||||
| H magnitude | 16.06 (0.2) | |||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 16.43 (0.007) | 16.44 (0.006) | ||||||||||||
| g magnitude | 15.97 (0.004) | 15.96 (0.004) | ||||||||||||
| r magnitude | 16.18 (0.005) | 16.16 (0.004) | ||||||||||||
| i magnitude | 16.37 (0.006) | 16.38 (0.005) | ||||||||||||
| z magnitude | 16.63 (0.01) | 16.64 (0.01) | ||||||||||||
| G magnitude | 16.06 (0.004) | 16.08 | 16.06 | 16.06 (0.003) | 16.08 | |||||||||
| BP magnitude | 16.06 (0.004) | 16.06 | 16.06 | |||||||||||
| RP magnitude | 16.09 (0.004) | 16.09 | 16.09 | |||||||||||
| Pan g magnitude | 16.05 (0.03) | |||||||||||||
| Pan r magnitude | 16.19 (0.006) | |||||||||||||
| Pan i magnitude | 16.39 (0.003) | |||||||||||||
| Pan z magnitude | 16.61 (0.005) | |||||||||||||
| Pan y magnitude | 16.74 (0.008) | |||||||||||||
| E(B-V) | 0.003 | |||||||||||||
* 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.