All names: Gaia DR3 1572762739705066880, WDJ12204.19+544356.46, Gaia EDR3 1572762739705066880, SDSS J122004.16+544356.4, SDSS J122004.17+544356.5, WDJ122004.19+544356.46, Gaia DR2 1572762739704662144
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 20 04.06 (0.2) | 12 20 04.06 | 12 20 04.06 | 12 20 04.19 (0.2) | 12 20 04.06 | |||
| Declination | 54 43 56.90 (0.3) | 54 43 56.88 | 54 43 56.90 | 54 43 56.46 (0.3) | 54 43 56.88 | |||
| Spectral type | DA | DA | ||||||
| Effective temperature | [K] | 4728.0 (107) | ||||||
| log(g) | [cgs] | 7.90 (0.07) | ||||||
| Mass | [M☉] | 0.521 (0.06) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 10.59 (0.3) | 10.54 (0.5) | 10.59 | 10.59 (0.3) | 10.54 (0.5) | ||
| Distance | [pc] | 94.42 (3) | 94.88 (5) | 94.42 | 94.42 (3) | 94.88 (5) | ||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -70.74839544 (0.3) | -69.9810693 (0.7) | -70.748 (0.3) | -69.9810693 | |||
| Proper motion (declination) | [mas/yr] | 26.89151906 (0.4) | 27.03139808 (0.7) | 26.892 (0.4) | 27.03139808 | |||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 21.88 (0.2) | 21.88 (0.2) | ||||||
| g magnitude | 20.48 (0.03) | 20.48 (0.03) | ||||||
| r magnitude | 19.87 (0.02) | 19.87 (0.02) | ||||||
| i magnitude | 19.58 (0.02) | 19.58 (0.02) | ||||||
| z magnitude | 19.64 (0.08) | 19.64 (0.08) | ||||||
| G magnitude | 19.89 (0.08) | 19.93 | 19.89 | 19.89 (0.005) | 19.93 | |||
| BP magnitude | 20.30 (0.08) | 20.29 | 20.29 | |||||
| RP magnitude | 19.31 (0.05) | 19.38 | 19.38 | |||||
| Pan g magnitude | 20.36 (0.03) | |||||||
| Pan r magnitude | 19.88 (0.01) | |||||||
| Pan i magnitude | 19.65 (0.006) | |||||||
| Pan z magnitude | 19.61 (0.02) | |||||||
| Pan y magnitude | 19.52 (0.02) | |||||||
| E(B-V) | 0.007 | |||||||
* 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.