All names: SDSS J155811.23+253803.1, Gaia EDR3 1220076277514554496, Gaia DR2 1220076277514554496, WD 1556+257, SDSS J155811.24+253803.2, Gaia DR3 1220076277514554496, TIC 258148088, [SGR2010] J1558+2538, GALEX J155811.2+253802, 2MASS J15581124+2538031
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 58 11.21 (0.04) | 15 58 11.24 | 15 58 11.21 (0.06) | 15 58 11.25 (0.04) | 15 58 11.14 | |||
| Declination | 25 38 03.30 (0.06) | 25 38 03.22 | 25 38 03.30 (0.08) | 25 38 03.18 (0.06) | 25 37 58.08 | |||
| Spectral type | D+M1 | WD+M1 | ||||||
| Effective temperature | [K] | |||||||
| log(g) | [cgs] | |||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 1.60 (0.09) | 1.56 (0.1) | 1.60 (0.09) | ||||
| Distance | [pc] | 626.28 (34) | 641.50 (46) | 626.29 (34) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -39.3294106 (0.05) | -39.49566866 (0.2) | -39.329 (0.06) | ||||
| Proper motion (declination) | [mas/yr] | 7.561822963 (0.08) | 7.65862718 (0.2) | 7.562 (0.08) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | yes | |||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 15.57 (0.07) | |||||||
| H magnitude | 14.90 (0.08) | |||||||
| K magnitude | 14.66 (0.1) | |||||||
| u magnitude | 20.97 (0.06) | 20.96 (0.07) | 20.96 | |||||
| g magnitude | 19.21 (0.01) | 19.21 (0.01) | 19.21 | |||||
| r magnitude | 18.05 (0.007) | 18.05 (0.007) | 18.05 | |||||
| i magnitude | 17.28 (0.007) | 17.28 (0.007) | 17.28 | |||||
| z magnitude | 16.86 (0.01) | 16.84 (0.01) | 16.85 | |||||
| G magnitude | 17.86 (0.01) | 17.89 | 17.86 (0.003) | |||||
| BP magnitude | 18.78 (0.01) | 18.81 | ||||||
| RP magnitude | 16.88 (0.005) | 16.91 | ||||||
| Pan g magnitude | 19.07 (0.009) | |||||||
| Pan r magnitude | 18.05 (0.004) | |||||||
| Pan i magnitude | 17.29 (0.003) | |||||||
| Pan z magnitude | 16.94 (0.001) | |||||||
| Pan y magnitude | 16.76 (0.01) | |||||||
| E(B-V) | 0.044 | |||||||
* 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.