All names: GALEX J074641.8+170746, SDSS J074641.88+170746.2, Gaia DR2 668086221638876672, SDSS J074641.89+170746.2, SDSS J074641.88+170746.0, Gaia EDR3 668086221638876672, Gaia DR3 668086221638876672
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 07 46 41.88 (0.6) | 07 46 41.88 | 07 46 41.88 (0.9) | 07 46 41.88 (0.6) | 07 46 41.89 | |||||
| Declination | 17 07 46.12 (0.5) | 17 07 46.09 | 17 07 46.12 (0.8) | 17 07 46.17 (0.5) | 17 07 46.22 | |||||
| Spectral type | DO | DA | DA | DA | ||||||
| Effective temperature | [K] | 71301.0 (16046) | 88576.0 (10274) | |||||||
| log(g) | [cgs] | 8.69 (1) | 8.70 (1) | |||||||
| Mass | [M☉] | 1.06 (0.5) | 1.056 (0.3) | |||||||
| log(Luminosity) | [L☉] | 0.14 (1) | ||||||||
| Cooling age | [Gyr] | 0.0005 (0.0004) | ||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(N/He) | ||||||||||
| log(O/He) | ||||||||||
| log(Na/He) | ||||||||||
| log(Mg/He) | ||||||||||
| log(Al/He) | ||||||||||
| log(Si/He) | ||||||||||
| log(P/He) | ||||||||||
| log(S/He) | ||||||||||
| log(Cl/He) | ||||||||||
| log(Sc/He) | ||||||||||
| log(Ti/He) | ||||||||||
| log(V/He) | ||||||||||
| log(Cr/He) | ||||||||||
| log(Mn/He) | ||||||||||
| log(Fe/He) | ||||||||||
| log(Co/He) | ||||||||||
| log(Ni/He) | ||||||||||
| log(Cu/He) | ||||||||||
| log(Zn/He) | ||||||||||
| log(Ga/He) | ||||||||||
| log(Ge/He) | ||||||||||
| log(Sr/He) | ||||||||||
| Parallax | [mas] | 1.16 (0.7) | 1.10 (1) | 1.16 (0.7) | ||||||
| Distance | [pc] | 864.51 (511) | 906.19 (957) | 864.53 (511) | ||||||
| Composition | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | 1.246758894 (0.9) | 0.555438733 (2) | 1.247 (0.9) | ||||||
| Proper motion (declination) | [mas/yr] | -3.275255439 (0.6) | -3.066249051 (1) | -3.275 (0.6) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 19.50 (0.03) | 19.47 (0.03) | 19.47 (0.03) | |||||||
| g magnitude | 19.91 (0.01) | 19.90 (0.02) | 19.90 (0.02) | |||||||
| r magnitude | 20.39 (0.03) | 20.36 (0.03) | 20.36 (0.03) | |||||||
| i magnitude | 20.84 (0.05) | 20.78 (0.06) | 20.78 (0.06) | |||||||
| z magnitude | 21.48 (0.3) | 20.79 (0.2) | 20.79 (0.2) | |||||||
| G magnitude | 20.14 (0.07) | 20.22 | 20.14 (0.008) | |||||||
| BP magnitude | 19.95 (0.07) | 19.85 | ||||||||
| RP magnitude | 20.37 (0.1) | 20.09 | ||||||||
| Pan g magnitude | 19.98 (0.02) | |||||||||
| Pan r magnitude | 20.42 (0.01) | |||||||||
| Pan i magnitude | 20.82 (0.03) | |||||||||
| Pan z magnitude | 21.02 (0.1) | |||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.033 | |||||||||
* 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.