All names: GALEX J025258.1+345345, TIC 77547696, WDJ025258.06+345345.97, USNO-B1.0 1248-00042645, SDSS J025258.11+345345.7, Gaia DR3 140253260859027200, Gaia EDR3 140253260859027200, WD 0249+346, KUV 02499+3442, Gaia DR2 140253260859027200, 2MASS J02525803+3453461, SDSS J025258.10+345345.6
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Gaia DR2 | Stilism | Bergeron et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 52 58.19 (0.05) | 02 52 58.19 (0.07) | 02 52 58.19 | 02 52 58.06 (0.05) | 02 52 58.19 | 02 52 58.32 | |||||
| Declination | 34 53 45.12 (0.04) | 34 53 45.14 (0.06) | 34 53 45.12 | 34 53 45.97 (0.04) | 34 53 45.14 | 34 53 44.52 | |||||
| Spectral type | DBA | DB | DB | DB | DB | ||||||
| Effective temperature | [K] | 12015.0 (55) | 13320.0 (454) | 11994.0 (172) | |||||||
| log(g) | [cgs] | 8.04 (0.008) | 8.96 (0.2) | 8.04 (0.02) | |||||||
| Mass | [M☉] | 0.61 (0.007) | 1.17 (0.1) | 0.607 (0.01) | |||||||
| log(Luminosity) | [L☉] | -3.00 | |||||||||
| Cooling age | [Gyr] | 1.3490 | |||||||||
| log(H/He) | -6.0 | <-5.04 (0.4) | |||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| log(N/He) | |||||||||||
| log(O/He) | |||||||||||
| log(Na/He) | |||||||||||
| log(Mg/He) | |||||||||||
| log(Al/He) | |||||||||||
| log(Si/He) | |||||||||||
| log(P/He) | |||||||||||
| log(S/He) | |||||||||||
| log(Cl/He) | |||||||||||
| log(Sc/He) | |||||||||||
| log(Ti/He) | |||||||||||
| log(V/He) | |||||||||||
| log(Cr/He) | |||||||||||
| log(Mn/He) | |||||||||||
| log(Fe/He) | |||||||||||
| log(Co/He) | |||||||||||
| log(Ni/He) | |||||||||||
| log(Cu/He) | |||||||||||
| log(Zn/He) | |||||||||||
| log(Ga/He) | |||||||||||
| log(Ge/He) | |||||||||||
| log(Sr/He) | |||||||||||
| Parallax | [mas] | 11.44 (0.06) | 11.50 (0.08) | 11.44 | 11.44 (0.06) | 11.50 (0.08) | |||||
| Distance | [pc] | 87.44 (0.5) | 86.99 (0.6) | 42.00 | 87.44 | 87.44 (0.5) | 86.99 (0.6) | ||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 101.0905021 (0.06) | 100.7874434 (0.1) | 101.091 (0.06) | 100.7874434 | ||||||
| Proper motion (declination) | [mas/yr] | -53.14848233 (0.06) | -53.2164994 (0.1) | -53.148 (0.06) | -53.2164994 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 17.40 | ||||||||||
| V magnitude | 16.40 | 16.40 | |||||||||
| R magnitude | 17.00 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.83 (0.1) | ||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 16.50 (0.007) | 16.50 (0.007) | |||||||||
| g magnitude | 16.47 (0.004) | 16.47 (0.004) | |||||||||
| r magnitude | 16.66 (0.005) | 16.66 (0.005) | |||||||||
| i magnitude | 16.84 (0.005) | 16.84 (0.005) | |||||||||
| z magnitude | 17.00 (0.01) | 17.00 (0.01) | |||||||||
| G magnitude | 16.55 (0.004) | 16.57 | 16.55 | 16.55 (0.003) | 16.57 | ||||||
| BP magnitude | 16.53 (0.004) | 16.50 | 16.50 | ||||||||
| RP magnitude | 16.55 (0.006) | 16.56 | 16.56 | ||||||||
| Pan g magnitude | 16.51 (0.002) | ||||||||||
| Pan r magnitude | 16.68 (0.003) | ||||||||||
| Pan i magnitude | 16.89 (0.002) | ||||||||||
| Pan z magnitude | 17.07 (0.002) | ||||||||||
| Pan y magnitude | 17.23 (0.01) | ||||||||||
| E(B-V) | 0.004 | ||||||||||
* 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.