All names: Gaia DR3 570139870411609728, SDSS J042154.94+830251.7, Gaia DR2 570139870411609728, Gaia EDR3 570139870411609728, GALEX J042155.1+830251
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 21 55.09 (0.4) | 04 21 55.03 (0.4) | ||
| Declination | 83 02 51.37 (0.4) | 83 02 51.56 (0.4) | ||
| Spectral type | DA | |||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 2.52 (0.5) | 2.52 (0.5) | |
| Distance | [pc] | 397.60 (78) | 397.60 (78) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 6.192 (0.6) | 6.192 (0.6) | |
| Proper motion (declination) | [mas/yr] | -11.848 (0.5) | -11.848 (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 | 20.79 (0.1) | |||
| g magnitude | 20.05 (0.02) | |||
| r magnitude | 20.18 (0.03) | |||
| i magnitude | 20.36 (0.05) | |||
| z magnitude | 20.74 (0.3) | |||
| G magnitude | 20.09 (0.006) | 20.09 (0.006) | ||
| BP magnitude | 20.13 (0.06) | |||
| RP magnitude | 20.17 (0.09) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.051 | |||
* 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.