All names: SDSS J085554.94+204553.1, SDSS J085554.94+204553.2, USNO-A2.0 1050-05905540, GALEX 2693691359397677149, Gaia DR2 684913761768834944, Gaia EDR3 684913761768834944, Gaia DR3 684913761768834944
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 55 54.93 (0.2) | 08 55 54.94 | 08 55 54.93 (0.3) | 08 55 54.95 (0.3) | 08 55 54.94 | ||||
| Declination | 20 45 53.32 (0.1) | 20 45 53.17 | 20 45 53.32 (0.2) | 20 45 53.25 (0.2) | 20 45 53.24 | ||||
| Spectral type | DA | DA | DA | ||||||
| Effective temperature | [K] | 13369.0 (262) | |||||||
| log(g) | [cgs] | 8.12 (0.06) | |||||||
| Mass | [M☉] | 0.675 (0.04) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 2.47 (0.3) | 2.39 (0.3) | 2.39 (0.3) | |||||
| Distance | [pc] | 404.39 (41) | 419.27 (56) | 419.27 (56) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -18.12295316 (0.3) | -18.24528173 (0.6) | -18.245 (0.6) | |||||
| Proper motion (declination) | [mas/yr] | 4.934633821 (0.2) | 4.830649191 (0.5) | 4.831 (0.5) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 18.20 (0.3) | ||||||||
| V magnitude | |||||||||
| R magnitude | 18.40 (0.3) | ||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 19.11 (0.02) | 19.11 (0.02) | 19.09 (0.03) | ||||||
| g magnitude | 18.67 (0.008) | 18.67 (0.008) | 18.67 (0.02) | ||||||
| r magnitude | 18.93 (0.01) | 18.93 (0.01) | 18.95 (0.03) | ||||||
| i magnitude | 19.11 (0.02) | 19.11 (0.02) | 19.11 (0.02) | ||||||
| z magnitude | 19.34 (0.05) | 19.34 (0.05) | 19.33 (0.05) | ||||||
| G magnitude | 18.78 (0.02) | 18.82 | 18.82 (0.002) | ||||||
| BP magnitude | 18.84 (0.02) | 18.77 | |||||||
| RP magnitude | 18.80 (0.03) | 18.76 | |||||||
| Pan g magnitude | 18.69 (0.005) | ||||||||
| Pan r magnitude | 18.92 (0.01) | ||||||||
| Pan i magnitude | 19.14 (0.006) | ||||||||
| Pan z magnitude | 19.39 (0.01) | ||||||||
| Pan y magnitude | 19.48 (0.04) | ||||||||
| E(B-V) | 0.026 | ||||||||
* 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.