All names: Gaia DR3 1597192582404238592, [SGR2010] J1549+5349, [HHD2009] SDSS J1549+5349, TIC 377390551, SDSS J154959.54+534911.5, Gaia EDR3 1597192582404238592, Gaia DR2 1597192578107874048, 2MASS J15495959+5349109, WD 1548+539, SDSS J154959.56+534911.5, SDSS J154959.55+534911.5, WIRED J154959.55+534911.5
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 49 59.53 (0.3) | 15 49 59.56 | 15 49 59.55 | 15 49 59.55 (0.3) | 15 49 59.54 | 15 49 58.68 | 15 49 59.56 | |||
| Declination | 53 49 11.54 (0.3) | 53 49 11.52 | 53 49 11.50 | 53 49 11.38 (0.3) | 53 49 11.54 | 53 49 05.16 | 53 49 11.54 | |||
| Spectral type | DA+M | DA+dM | DA+M | DA+M | DA+M | |||||
| Effective temperature | [K] | 25891.0 (2118) | 6300.0 (1) | 6300.0 (1) | ||||||
| log(g) | [cgs] | 7.41 (0.3) | 7.73 (0.4) | 5.81 (0.2) | ||||||
| Mass | [M☉] | 0.39 (0.1) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | -1.72 (0.3) | ||||||||
| Distance | [pc] | 269.00 (79) | ||||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -12.29662759 (0.4) | -12.297 (0.4) | -6.7 | ||||||
| Proper motion (declination) | [mas/yr] | 10.5085007 (0.4) | 10.509 (0.4) | 1.0 | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | yes | WDMS | ||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 16.99 (0.2) | |||||||||
| H magnitude | 16.11 (0.06) | |||||||||
| K magnitude | 15.68 (0.06) | |||||||||
| u magnitude | 19.84 (0.04) | 19.88 | 19.89 (0.04) | 19.88 (0.04) | 19.85 | 19.88 (0.05) | ||||
| g magnitude | 19.36 (0.01) | 19.39 | 19.39 (0.01) | 19.39 (0.02) | 19.39 | 19.39 (0.02) | ||||
| r magnitude | 18.75 (0.01) | 18.76 | 18.74 (0.01) | 18.77 (0.02) | 18.77 | 18.76 (0.02) | ||||
| i magnitude | 18.13 (0.009) | 18.15 | 18.13 (0.009) | 18.15 (0.02) | 18.14 | 18.14 (0.02) | ||||
| z magnitude | 17.72 (0.02) | 17.75 | 17.73 (0.02) | 17.75 (0.02) | 17.75 | 17.75 (0.02) | ||||
| G magnitude | 18.89 (0.04) | 18.89 (0.005) | ||||||||
| BP magnitude | 19.28 (0.04) | |||||||||
| RP magnitude | 17.79 (0.02) | |||||||||
| Pan g magnitude | 19.31 (0.04) | |||||||||
| Pan r magnitude | 18.79 (0.01) | |||||||||
| Pan i magnitude | 18.16 (0.005) | |||||||||
| Pan z magnitude | 17.83 (0.006) | |||||||||
| Pan y magnitude | 17.65 (0.008) | |||||||||
| E(B-V) | 0.018 | |||||||||
* 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.