All names: WT 689, GALEX J201248.7-465903, WDJ201248.76-465902.59, 2MASS J20124874-4659024, Gaia DR3 6672244029484054272, Gaia DR2 6672244029484054272, TIC 129222507, Gaia EDR3 6672244029484054272, WD 2009-471
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | Gaia DR2 | Stilism | Subasavage et al. 2008 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 12 49.05 (0.06) | 20 12 49.04 (0.06) | 20 12 48.75 | 20 12 49.05 | 20 12 48.76 (0.06) | 20 12 49.04 | 20 12 48.17 | |||
| Declination | -46 59 05.84 (0.04) | -46 59 05.74 (0.05) | -46 59 02.50 | -46 59 05.84 | -46 59 02.59 (0.04) | -46 59 05.74 | -46 58 57.72 | |||
| Spectral type | DA | DA8.5 | DA | DA8.5 | DA8.5 | |||||
| Effective temperature | [K] | 5809.0 (50) | 5827.0 (162) | 5852.0 (32) | ||||||
| log(g) | [cgs] | 7.99 (0.03) | 8.01 (0.01) | |||||||
| Mass | [M☉] | 0.583 (0.02) | 0.594 (0.01) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| 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] | 36.03 (0.07) | 36.03 (0.07) | 36.05 (0.09) | 36.03 | 36.03 (0.07) | 36.05 (0.09) | 37.00 | ||
| Distance | [pc] | 27.76 (0.05) | 27.75 (0.05) | 27.74 (0.07) | 27.00 | 27.76 | 27.76 (0.05) | 27.74 (0.07) | 27.03 | |
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | 181.3138801 (0.07) | 181.3023269 (0.1) | 181.314 (0.07) | 181.3023269 | |||||
| Proper motion (declination) | [mas/yr] | -202.9920704 (0.05) | -202.9823883 (0.09) | -202.992 (0.05) | -202.9823883 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 17.00 | |||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 15.38 (0.05) | 15.38 (0.05) | ||||||||
| H magnitude | 15.00 (0.05) | 15.00 (0.05) | ||||||||
| K magnitude | 15.08 (0.1) | 15.07 (0.1) | ||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 16.37 (0.007) | 16.38 | 16.37 | 16.37 (0.003) | 16.38 | |||||
| BP magnitude | 16.69 (0.007) | 16.70 | 16.70 | |||||||
| RP magnitude | 15.88 (0.004) | 15.88 | 15.88 | |||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.003 | |||||||||
* 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.