All names: SDSS J091211.01+442057.9, 2MASS J09121099+4420578, Gaia DR3 817370656256982784, SDSS J091211.00+442057.8, Gaia DR2 817370656256982784, SDSS J091211.00+442057.9, GALEX J091211.0+442058, Gaia EDR3 817370656256982784, [HHD2009] SDSS J0912+4420, TIC 56838112, WD 0908+445, SDSS J091211.01+442057.8, WIRED J091211.01+442057.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 12 10.99 (0.07) | 09 12 11.01 | 09 12 10.99 (0.08) | 09 12 11.01 (0.07) | 09 12 11.01 | 09 12 10.90 | 09 12 11.01 | |||
| Declination | 44 20 57.72 (0.05) | 44 20 57.84 | 44 20 57.72 (0.07) | 44 20 57.88 (0.05) | 44 20 57.93 | 44 20 51.72 | 44 20 57.90 | |||
| Spectral type | D+K | WD:+M | WD: dM | WD:M | ||||||
| Effective temperature | [K] | 6300.0 (3) | 6300.0 (3) | |||||||
| log(g) | [cgs] | 9.00 (0.01) | 10.00 (0.003) | |||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 1.26 (0.09) | 1.34 (0.1) | 1.26 (0.09) | ||||||
| Distance | [pc] | 795.02 (54) | 744.36 (58) | 795.04 (54) | ||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -13.59395819 (0.07) | -13.90639835 (0.1) | -13.594 (0.07) | -13.9 | |||||
| Proper motion (declination) | [mas/yr] | -10.35063743 (0.08) | -10.25748483 (0.1) | -10.351 (0.08) | -10.6 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | |||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 15.06 (0.04) | |||||||||
| H magnitude | 14.47 (0.04) | |||||||||
| K magnitude | 14.33 (0.08) | |||||||||
| u magnitude | 18.36 (0.02) | 18.34 (0.02) | 18.31 (0.04) | 18.31 | 18.32 (0.05) | |||||
| g magnitude | 18.02 (0.006) | 18.01 (0.006) | 18.03 (0.02) | 18.03 | 18.02 (0.02) | |||||
| r magnitude | 17.31 (0.005) | 17.31 (0.005) | 17.30 (0.02) | 17.30 | 17.30 (0.02) | |||||
| i magnitude | 16.78 (0.005) | 16.78 (0.005) | 16.77 (0.02) | 16.77 | 16.77 (0.02) | |||||
| z magnitude | 16.46 (0.009) | 16.42 (0.01) | 16.45 (0.03) | 16.45 | 16.45 (0.03) | |||||
| G magnitude | 17.09 (0.01) | 17.10 | 17.09 (0.004) | |||||||
| BP magnitude | 17.69 (0.01) | 17.72 | ||||||||
| RP magnitude | 16.29 (0.007) | 16.30 | ||||||||
| Pan g magnitude | 17.88 (0.01) | |||||||||
| Pan r magnitude | 17.17 (0.01) | |||||||||
| Pan i magnitude | 16.70 (0.007) | |||||||||
| Pan z magnitude | 16.43 (0.003) | |||||||||
| Pan y magnitude | 16.25 (0.003) | |||||||||
| E(B-V) | 0.023 | |||||||||
* 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.