All names: Gaia DR3 658625267678689024, SDSS J084353.63+174626.6, SDSS J084353.64+174626.7, GALEX J084353.6+174625, Gaia EDR3 658625267678689024, SDSS J084353.63+174626.7, Gaia DR2 658625267678689024
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 43 53.63 (0.6) | 08 43 53.63 | 08 43 53.63 (1) | 08 43 53.64 (0.6) | 08 43 53.64 | ||||
| Declination | 17 46 26.59 (0.2) | 17 46 26.69 | 17 46 26.59 (0.8) | 17 46 26.66 (0.2) | 17 46 26.71 | ||||
| Spectral type | DA | DA | DA | DA | |||||
| Effective temperature | [K] | 40868.0 (4664) | 45202.0 (3527) | ||||||
| log(g) | [cgs] | 7.08 (0.5) | 7.95 (0.3) | ||||||
| Mass | [M☉] | 0.33 (0.1) | 0.648 (0.2) | ||||||
| log(Luminosity) | [L☉] | 0.28 (0.4) | |||||||
| Cooling age | [Gyr] | 0.0001 | |||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| log(C/H) | |||||||||
| log(N/H) | |||||||||
| log(O/H) | |||||||||
| log(Na/H) | |||||||||
| log(Mg/H) | |||||||||
| log(Al/H) | |||||||||
| log(Si/H) | |||||||||
| log(P/H) | |||||||||
| log(S/H) | |||||||||
| log(Sc/H) | |||||||||
| log(Ti/H) | |||||||||
| log(Cr/H) | |||||||||
| log(Mn/H) | |||||||||
| log(Fe/H) | |||||||||
| log(Ni/H) | |||||||||
| Parallax | [mas] | -0.18 (0.7) | -1.00 (1) | ||||||
| Distance | [pc] | ||||||||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | -6.347909721 (0.7) | -6.50951356 (2) | -6.348 (0.7) | |||||
| Proper motion (declination) | [mas/yr] | -4.456987613 (0.5) | -5.236905667 (2) | -4.457 (0.5) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 19.71 (0.03) | 19.65 (0.03) | 19.65 (0.03) | ||||||
| g magnitude | 20.00 (0.02) | 20.05 (0.02) | 20.05 (0.02) | ||||||
| r magnitude | 20.47 (0.03) | 20.49 (0.03) | 20.49 (0.03) | ||||||
| i magnitude | 20.91 (0.06) | 20.89 (0.07) | 20.89 (0.07) | ||||||
| z magnitude | 21.29 (0.3) | 21.17 (0.3) | 21.17 (0.3) | ||||||
| G magnitude | 20.25 (0.06) | 20.31 | 20.25 (0.005) | ||||||
| BP magnitude | 20.13 (0.06) | 20.11 | |||||||
| RP magnitude | 20.30 (0.1) | 20.64 | |||||||
| Pan g magnitude | 20.09 (0.02) | ||||||||
| Pan r magnitude | 20.51 (0.03) | ||||||||
| Pan i magnitude | 20.82 (0.05) | ||||||||
| Pan z magnitude | 20.98 (0.1) | ||||||||
| Pan y magnitude | |||||||||
| 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.