All names: SDSS J091235.60+265828.6, GALEX J091235.6+265828, SDSS J091235.61+265828.4, Gaia DR2 695032361121072256, Gaia EDR3 695032361121072256, Gaia DR3 695032361121072256, Ton 393, SDSS J091235.59+265828.6, SDSS J091235.61+265828.45, WD 0909+271, PG 0909+272
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 12 35.61 (0.06) | 09 12 35.60 | 09 12 35.61 (0.09) | 09 12 35.61 | 09 12 35.59 (0.06) | 09 12 35.69 | |||||||
| Declination | 26 58 28.35 (0.05) | 26 58 28.60 | 26 58 28.36 (0.07) | 26 58 28.35 | 26 58 28.70 (0.05) | 26 58 37.92 | |||||||
| Spectral type | DA | DA | DA | DA | DA1.0 | DA | DA | ||||||
| Effective temperature | [K] | 48574.0 (468) | 54150.0 (443) | 49820.0 (1739) | 59027.0 (8191) | ||||||||
| log(g) | [cgs] | 7.87 (0.04) | 8.04 (0.03) | 8.09 (0.1) | 7.90 (0.07) | ||||||||
| Mass | [M☉] | 0.62 (0.02) | 0.74 (0.07) | 0.663 (0.05) | |||||||||
| log(Luminosity) | [L☉] | 0.06 (0.03) | |||||||||||
| Cooling age | [Gyr] | 0.0022 (0.0001) | |||||||||||
| 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] | 2.63 (0.08) | 2.57 (0.2) | 2.63 | 2.63 (0.09) | ||||||||
| Distance | [pc] | 379.67 (12) | 388.90 (23) | 149.00 | 379.67 | 379.67 (12) | |||||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 15.75420062 (0.08) | 15.71546761 (0.2) | 15.754 (0.08) | |||||||||
| Proper motion (declination) | [mas/yr] | -21.54877571 (0.06) | -21.64812346 (0.1) | -21.549 (0.06) | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 15.20 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 16.07 (0.005) | 16.07 (0.01) | 16.07 (0.005) | ||||||||||
| g magnitude | 16.43 (0.004) | 16.46 (0.02) | 16.43 (0.004) | ||||||||||
| r magnitude | 16.95 (0.005) | 16.96 (0.02) | 16.95 (0.005) | ||||||||||
| i magnitude | 17.34 (0.006) | 17.35 (0.01) | 17.34 (0.006) | ||||||||||
| z magnitude | 17.67 (0.01) | 17.67 (0.02) | 17.67 (0.01) | ||||||||||
| G magnitude | 16.73 (0.004) | 16.76 | 16.73 | 16.73 (0.003) | |||||||||
| BP magnitude | 16.57 (0.004) | 16.50 | |||||||||||
| RP magnitude | 17.04 (0.01) | 17.04 | |||||||||||
| Pan g magnitude | 16.52 (0.003) | ||||||||||||
| Pan r magnitude | 16.98 (0.004) | ||||||||||||
| Pan i magnitude | 17.36 (0.003) | ||||||||||||
| Pan z magnitude | 17.65 (0.004) | ||||||||||||
| Pan y magnitude | 17.83 (0.01) | ||||||||||||
| E(B-V) | 0.027 | ||||||||||||
* 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.