All names: SDSS J081942.67+542608.4, [HHD2009] SDSS J0819+5426, GALEX J081942.6+542608, WD 0815+545, Gaia DR2 1032228976514364928, SDSS J081942.67+542608.2, [SGR2010] J0819+5426, WIRED J081942.67+542608.1, TIC 81103519, Gaia DR3 1032228976514364928, SDSS J081942.68+542608.1, 2MASS J08194267+5426083, SDSS J081942.67+542608.1, Gaia EDR3 1032228976514364928
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 19 42.68 (0.1) | 08 19 42.68 | 08 19 42.68 (0.2) | 08 19 42.67 | 08 19 42.68 (0.1) | 08 19 42.02 | 08 19 42.67 | |||
| Declination | 54 26 07.95 (0.1) | 54 26 08.15 | 54 26 07.95 (0.1) | 54 26 08.09 | 54 26 08.19 (0.1) | 54 26 03.12 | 54 26 08.20 | |||
| Spectral type | DA+M | DA+M | DA d | DA+M | ||||||
| Effective temperature | [K] | 18586.0 (720) | 8386.0 (66) | |||||||
| log(g) | [cgs] | 7.62 (0.2) | 6.99 (0.2) | |||||||
| Mass | [M☉] | 0.435 (0.07) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 2.07 (0.2) | 2.03 (0.2) | 2.07 (0.2) | ||||||
| Distance | [pc] | 483.33 (39) | 492.92 (56) | 548.00 (107) | 483.33 (39) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -0.147257643 (0.2) | -0.42960499 (0.3) | -0.147 (0.2) | ||||||
| Proper motion (declination) | [mas/yr] | -15.52595762 (0.1) | -16.29715288 (0.3) | -15.526 (0.1) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 16.52 (0.1) | |||||||||
| H magnitude | 16.02 (0.2) | |||||||||
| K magnitude | 15.72 (0.2) | |||||||||
| u magnitude | 19.17 (0.02) | 19.16 | 19.17 (0.03) | 19.16 | 19.17 (0.03) | |||||
| g magnitude | 18.86 (0.009) | 18.85 | 18.86 (0.009) | 18.85 | 18.85 (0.02) | |||||
| r magnitude | 18.82 (0.01) | 18.82 | 18.82 (0.01) | 18.82 | 18.82 (0.01) | |||||
| i magnitude | 18.20 (0.009) | 18.20 | 18.20 (0.009) | 18.19 | 18.20 (0.01) | |||||
| z magnitude | 17.64 (0.02) | 17.64 | 17.65 (0.02) | 17.64 | 17.64 (0.02) | |||||
| G magnitude | 18.50 (0.03) | 18.51 | 18.50 (0.003) | |||||||
| BP magnitude | 18.94 (0.03) | 18.91 | ||||||||
| RP magnitude | 17.81 (0.02) | 17.78 | ||||||||
| Pan g magnitude | 18.88 (0.004) | |||||||||
| Pan r magnitude | 18.85 (0.008) | |||||||||
| Pan i magnitude | 18.22 (0.004) | |||||||||
| Pan z magnitude | 17.74 (0.007) | |||||||||
| Pan y magnitude | 17.48 (0.01) | |||||||||
| E(B-V) | 0.038 | |||||||||
* 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.