All names: Gaia DR3 3956719276907545856, GALEX J125240.0+230457, SDSS J125240.06+230456.8, Gaia DR2 3956719276907545856, SDSS J125240.05+230456.7, Gaia EDR3 3956719276907545856
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 52 40.05 (0.6) | 12 52 40.06 | 12 52 40.05 (0.9) | 12 52 40.06 (0.6) | 12 52 40.06 | |||||
| Declination | 23 04 56.68 (0.4) | 23 04 56.74 | 23 04 56.68 (0.5) | 23 04 56.76 (0.4) | 23 04 56.78 | |||||
| Spectral type | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 35568.0 (1921) | 34169.0 (1019) | |||||||
| log(g) | [cgs] | 8.19 (0.3) | 8.16 (0.2) | |||||||
| Mass | [M☉] | 0.76 (0.2) | 0.734 (0.1) | |||||||
| log(Luminosity) | [L☉] | -0.71 (0.2) | ||||||||
| Cooling age | [Gyr] | 0.0054 (0.002) | ||||||||
| 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] | 1.17 (0.7) | 0.96 (1) | 1.17 (0.7) | ||||||
| Distance | [pc] | 855.25 (504) | 1041.63 (1059) | 855.21 (504) | ||||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -8.132623843 (0.9) | -14.32503271 (2) | -8.133 (0.9) | ||||||
| Proper motion (declination) | [mas/yr] | -5.047765035 (0.7) | -5.695690803 (0.9) | -5.048 (0.7) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 19.64 (0.03) | 19.65 (0.04) | 19.65 (0.04) | |||||||
| g magnitude | 19.91 (0.02) | 19.92 (0.02) | 19.92 (0.02) | |||||||
| r magnitude | 20.38 (0.03) | 20.42 (0.03) | 20.42 (0.03) | |||||||
| i magnitude | 20.81 (0.05) | 20.86 (0.06) | 20.86 (0.06) | |||||||
| z magnitude | 20.93 (0.2) | 20.94 (0.2) | 20.94 (0.2) | |||||||
| G magnitude | 20.20 (0.08) | 20.25 | 20.20 (0.007) | |||||||
| BP magnitude | 20.21 (0.08) | 20.04 | ||||||||
| RP magnitude | 20.49 (0.2) | 20.49 | ||||||||
| Pan g magnitude | 20.04 (0.02) | |||||||||
| Pan r magnitude | 20.45 (0.02) | |||||||||
| Pan i magnitude | 20.80 (0.03) | |||||||||
| Pan z magnitude | 20.92 (0.05) | |||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.021 | |||||||||
* 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.