All names: Gaia DR3 1192151323572220544, SDSS J155720.69+144217.6, Gaia DR2 1192151323572220544, WIRED J155720.69+144217.6, GALEX J155720.7+144217, Gaia EDR3 1192151323572220544, 2MASS J15572071+1442179, WD 1555+148, TIC 393633748, [SGR2010] J1557+1442, SDSS J155720.69+144217.7
| 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 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 57 20.68 (0.05) | 15 57 20.69 | 15 57 20.68 (0.06) | 15 57 20.69 | 15 57 20.70 (0.05) | 15 57 20.66 | 15 57 20.69 | ||||
| Declination | 14 42 17.20 (0.04) | 14 42 17.62 | 14 42 17.22 (0.05) | 14 42 17.68 | 14 42 17.77 (0.04) | 14 42 12.60 | 14 42 17.66 | ||||
| Spectral type | DA+M | DA+M | DA4.1+M5 | DA+M | DA | ||||||
| Effective temperature | [K] | 12393.0 (1846) | 11074.0 (105) | ||||||||
| log(g) | [cgs] | 7.54 (0.4) | 6.71 (0.07) | ||||||||
| Mass | [M☉] | 0.38 (0.2) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 5.09 (0.08) | 5.12 (0.09) | 5.09 (0.08) | |||||||
| Distance | [pc] | 196.52 (3) | 195.50 (4) | 198.00 (42) | 196.52 (3) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -17.89873158 (0.06) | -17.83540555 (0.1) | -17.899 (0.06) | |||||||
| Proper motion (declination) | [mas/yr] | -35.6625781 (0.06) | -35.64429285 (0.09) | -35.663 (0.06) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | yes | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 14.62 (0.04) | ||||||||||
| H magnitude | 13.95 (0.03) | ||||||||||
| K magnitude | 13.72 (0.05) | ||||||||||
| u magnitude | 17.74 (0.01) | 17.79 | 17.78 (0.01) | 17.78 | 17.79 (0.02) | ||||||
| g magnitude | 17.25 (0.005) | 17.28 | 17.25 (0.005) | 17.25 | 17.28 (0.02) | ||||||
| r magnitude | 17.29 (0.005) | 17.32 | 17.29 (0.005) | 17.29 | 17.32 (0.02) | ||||||
| i magnitude | 16.72 (0.005) | 16.74 | 16.73 (0.005) | 16.73 | 16.74 (0.01) | ||||||
| z magnitude | 16.04 (0.007) | 16.03 | 16.05 (0.007) | 16.05 | 16.03 (0.02) | ||||||
| G magnitude | 16.94 (0.006) | 16.94 | 16.94 (0.003) | ||||||||
| BP magnitude | 17.34 (0.006) | 17.33 | |||||||||
| RP magnitude | 16.22 (0.004) | 16.24 | |||||||||
| Pan g magnitude | 17.28 (0.008) | ||||||||||
| Pan r magnitude | 17.30 (0.006) | ||||||||||
| Pan i magnitude | 16.75 (0.002) | ||||||||||
| Pan z magnitude | 16.20 (0.002) | ||||||||||
| Pan y magnitude | 15.88 (0.005) | ||||||||||
| E(B-V) | 0.030 | ||||||||||
* 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.