All names: SDSS J155422.40+562803.4, SDSS J155422.41+562803.42, Gaia EDR3 1622495364319996928, GALEX J155422.3+562802, SDSS J155422.41+562803.4, Gaia DR2 1622495364319996928, Gaia DR3 1622495364319996928
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 15 54 22.44 (1) | 15 54 22.40 | 15 54 22.42 (1) | |||
| Declination | 56 28 03.21 (0.9) | 56 28 03.14 | 56 28 02.80 (0.9) | |||
| Spectral type | DA | DA | ||||
| Effective temperature | [K] | 7823.0 (86) | ||||
| log(g) | [cgs] | 8.13 (0.1) | ||||
| Mass | [M☉] | 0.59 (0.07) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | -4.78 (1) | ||||
| Distance | [pc] | |||||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 11.53129549 (2) | 11.531 (2) | |||
| Proper motion (declination) | [mas/yr] | 25.49331214 (2) | 25.493 (2) | |||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | 20.63 (0.07) | 20.64 (0.07) | 20.64 (0.07) | |||
| g magnitude | 20.07 (0.02) | 20.13 (0.02) | 20.13 (0.02) | |||
| r magnitude | 20.01 (0.02) | 20.04 (0.03) | 20.04 (0.03) | |||
| i magnitude | 19.94 (0.03) | 19.99 (0.04) | 19.99 (0.04) | |||
| z magnitude | 19.97 (0.1) | 19.99 (0.1) | 19.99 (0.1) | |||
| G magnitude | 20.38 (0.08) | 20.38 (0.02) | ||||
| BP magnitude | 20.12 (0.08) | |||||
| RP magnitude | 19.75 (0.08) | |||||
| Pan g magnitude | 20.03 (0.006) | |||||
| Pan r magnitude | 20.06 (0.03) | |||||
| Pan i magnitude | 20.04 (0.02) | |||||
| Pan z magnitude | 20.12 (0.06) | |||||
| Pan y magnitude | 20.07 (0.1) | |||||
| E(B-V) | ||||||
* 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.