All names: US 3220, SDSS J025032.79-005823.4, HBQS 0247-0110, Gaia DR2 2497511319276670592, GALEX J025032.7-005823, SDSS J025032.79-005823.8, PB 6901, SDSS J025032.79-005823.9, WD 0247-011, LAMOST J025032.75-005823.8, Gaia EDR3 2497511319276670592, SDSS J025032.79-005823.5, SDSS J025032.78-005823.4, [LCB92] 0247-0110, Gaia DR3 2497511319276670592, [HH86] 0247-011
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Guo et al. 2015 | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 50 32.79 (0.09) | 02 50 32.79 | 02 50 32.79 (0.1) | 02 50 32.79 | 02 50 32.79 (0.09) | 02 50 32.79 | 02 50 31.90 | 02 50 32.79 | ||||||
| Declination | -00 58 24.05 (0.07) | -00 58 23.49 | -00 58 24.03 (0.1) | -00 58 24.05 | -00 58 23.47 (0.07) | -00 58 23.50 | -00 58 21.00 | -00 58 23.41 | ||||||
| Spectral type | DA | DA | DA | DA | DA_auto | DA | DA | DA | ||||||
| Effective temperature | [K] | 19100.0 (150) | 16897.0 (675) | 18241.0 (99) | 18071.0 (156) | |||||||||
| log(g) | [cgs] | 8.02 (0.03) | 7.95 (0.04) | 7.97 (0.02) | 7.95 (0.03) | |||||||||
| Mass | [M☉] | 0.63 (0.01) | 0.589 (0.03) | |||||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.0891 | ||||||||||||
| 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] | 5.29 (0.1) | 5.18 (0.1) | 5.29 | 5.29 (0.1) | |||||||||
| Distance | [pc] | 189.16 (3) | 193.20 (5) | 189.16 | 189.16 (3) | |||||||||
| Composition | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -7.541020845 (0.1) | -7.231689966 (0.3) | -7.541 (0.1) | -9.2 | |||||||||
| Proper motion (declination) | [mas/yr] | -36.53051951 (0.09) | -36.58058615 (0.2) | -36.531 (0.09) | -44.5 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 17.40 | |||||||||||||
| V magnitude | 17.78 | |||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | 18.10 (0.2) | |||||||||||||
| u magnitude | 17.44 (0.009) | 17.44 (0.009) | 17.42 (0.02) | 17.42 | 17.42 (0.02) | |||||||||
| g magnitude | 17.28 (0.005) | 17.28 (0.005) | 17.29 (0.03) | 17.29 | 17.31 (0.03) | |||||||||
| r magnitude | 17.60 (0.006) | 17.60 (0.006) | 17.58 (0.02) | 17.58 | 17.58 (0.02) | |||||||||
| i magnitude | 17.85 (0.007) | 17.85 (0.007) | 17.87 (0.02) | 17.87 | 17.87 (0.02) | |||||||||
| z magnitude | 18.10 (0.02) | 18.10 (0.02) | 18.14 (0.03) | 18.14 | 18.13 (0.03) | |||||||||
| G magnitude | 17.43 (0.008) | 17.46 | 17.43 | 17.43 (0.003) | ||||||||||
| BP magnitude | 17.39 (0.008) | 17.39 | ||||||||||||
| RP magnitude | 17.56 (0.02) | 17.58 | ||||||||||||
| Pan g magnitude | 17.32 (0.006) | |||||||||||||
| Pan r magnitude | 17.60 (0.003) | |||||||||||||
| Pan i magnitude | 17.88 (0.005) | |||||||||||||
| Pan z magnitude | 18.10 (0.009) | |||||||||||||
| Pan y magnitude | 18.25 (0.01) | |||||||||||||
| E(B-V) | 0.015 | |||||||||||||
* 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.