All names: Gaia DR2 1542443947091149952, SDSS J122558.58+473245.7, GALEX J122558.6+473245, Gaia EDR3 1542443947091149952, PG 1223+478, 2RXP J122558.3+473232, SDSS J122558.64+473245.7, SDSS J122558.64+473245.8, Gaia DR3 1542443947091149952, WD 1223+478
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 25 58.57 (0.03) | 12 25 58.65 | 12 25 58.57 (0.05) | 12 25 58.57 | 12 25 58.68 (0.03) | 12 25 57.84 | ||||||
| Declination | 47 32 45.80 (0.04) | 47 32 45.80 | 47 32 45.79 (0.05) | 47 32 45.80 | 47 32 45.75 (0.04) | 47 32 42.00 | ||||||
| Spectral type | DA | DA | DA1.6 | DA1 | DA | |||||||
| Effective temperature | [K] | 31550.0 (468) | 30980.0 (463) | 33325.0 (638) | ||||||||
| log(g) | [cgs] | 7.88 (0.05) | 7.84 (0.05) | 7.87 (0.02) | ||||||||
| Mass | [M☉] | 0.59 (0.03) | 0.57 (0.03) | 0.585 (0.02) | ||||||||
| log(Luminosity) | [L☉] | -0.72 | ||||||||||
| Cooling age | [Gyr] | 0.0091 | ||||||||||
| 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] | 3.87 (0.07) | 3.65 (0.1) | 3.87 | 3.87 (0.07) | |||||||
| Distance | [pc] | 258.31 (4) | 274.24 (8) | 255.00 | 262.00 | 258.31 | 258.30 (4) | |||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -66.63116434 (0.03) | -66.7344499 (0.07) | -66.631 (0.03) | ||||||||
| Proper motion (declination) | [mas/yr] | 2.920596827 (0.05) | 3.007635544 (0.1) | 2.921 (0.05) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 15.84 | |||||||||||
| V magnitude | 16.69 | |||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 16.11 (0.005) | 16.11 (0.005) | 16.09 | |||||||||
| g magnitude | 16.35 (0.003) | 16.35 (0.003) | 16.34 | |||||||||
| r magnitude | 16.86 (0.004) | 16.86 (0.004) | 16.85 | |||||||||
| i magnitude | 17.21 (0.005) | 17.21 (0.005) | 17.20 | |||||||||
| z magnitude | 17.54 (0.02) | 17.54 (0.02) | 17.51 | |||||||||
| G magnitude | 16.61 (0.002) | 16.63 | 16.61 | 16.61 (0.003) | ||||||||
| BP magnitude | 16.47 (0.002) | 16.39 | ||||||||||
| RP magnitude | 16.89 (0.005) | 16.88 | ||||||||||
| Pan g magnitude | 16.44 (0.006) | |||||||||||
| Pan r magnitude | 16.86 (0.001) | |||||||||||
| Pan i magnitude | 17.22 (0.003) | |||||||||||
| Pan z magnitude | 17.50 (0.003) | |||||||||||
| Pan y magnitude | 17.68 (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.