All names: WISEA J085418.06+470401.9, SDSS J085418.07+470402.2, WISE J085418.07+470402.1, Gaia EDR3 1013889775398504704, WD 0850+472, TIC 21533447, WIRED J085418.07+470402.2, SDSS J085418.06+470402.2, 2MASS J08541811+4704019
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|
| Right ascension | 08 54 18.00 (0.5) | 08 54 18.07 | 08 54 18.07 | 08 54 18.07 | 08 54 18.31 | 08 54 18.07 | |
| Declination | 47 04 02.81 (0.2) | 47 04 02.23 | 47 04 02.23 | 47 04 02.23 | 47 03 58.68 | 47 04 02.22 | |
| Spectral type | DZ+dM | DZ+M | DZ d | DZM | |||
| Effective temperature | [K] | 6300.0 (1) | 6300.0 (3) | ||||
| log(g) | [cgs] | 8.88 (0.1) | 10.00 (0.003) | ||||
| Mass | [M☉] | ||||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| Parallax | [mas] | -0.27 (0.4) | |||||
| Distance | [pc] | ||||||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | 3.822346996 (0.6) | 1.6 | ||||
| Proper motion (declination) | [mas/yr] | -5.467553916 (0.4) | -13.0 | ||||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | WDMS | ||||||
| B magnitude | |||||||
| V magnitude | |||||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | 15.90 (0.09) | ||||||
| H magnitude | 15.11 (0.1) | ||||||
| K magnitude | 15.13 (0.2) | ||||||
| u magnitude | 20.34 (0.05) | 20.34 (0.05) | 21.16 (0.09) | 21.16 | 21.18 (0.09) | ||
| g magnitude | 19.03 (0.01) | 19.04 (0.01) | 19.40 (0.02) | 19.40 | 19.42 (0.02) | ||
| r magnitude | 18.17 (0.007) | 18.17 (0.007) | 18.50 (0.02) | 18.50 | 18.50 (0.02) | ||
| i magnitude | 17.45 (0.006) | 17.45 (0.006) | 17.66 (0.02) | 17.66 | 17.66 (0.02) | ||
| z magnitude | 16.93 (0.01) | 16.93 (0.01) | 17.08 (0.02) | 17.08 | 17.10 (0.02) | ||
| G magnitude | 19.25 | ||||||
| BP magnitude | |||||||
| RP magnitude | |||||||
| Pan g magnitude | |||||||
| Pan r magnitude | |||||||
| Pan i magnitude | |||||||
| Pan z magnitude | |||||||
| 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.