All names: UCAC4 241-002074, Gaia DR2 4957085334163504512, WD 0204-422, USNO-B1.0 0480-00027322, HE 0204-4213, Gaia DR3 4957085334163504512, GALEX J020649.7-415926, Gaia EDR3 4957085334163504512
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Koester et al. 2009 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 06 49.74 (0.03) | 02 06 49.74 (0.04) | 02 06 49.74 | 02 06 49.83 (0.03) | 02 06 49.25 | |||
| Declination | -41 59 26.77 (0.04) | -41 59 26.74 (0.05) | -41 59 26.77 | -41 59 25.89 (0.04) | -41 59 20.76 | |||
| Spectral type | DA | DA | DA | |||||
| Effective temperature | [K] | 22575.0 (58) | 22076.0 (380) | |||||
| log(g) | [cgs] | 7.90 (0.009) | 7.98 (0.02) | |||||
| Mass | [M☉] | 0.62 (0.01) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 6.72 (0.05) | 6.72 (0.07) | 6.72 | 6.72 (0.05) | |||
| Distance | [pc] | 148.88 (1) | 148.90 (2) | 148.88 | 148.88 (1) | |||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -61.34587875 (0.03) | -61.36611987 (0.08) | -61.346 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | -55.10495437 (0.04) | -55.05219697 (0.08) | -55.105 (0.04) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 16.43 | 16.34 (0.03) | ||||||
| V magnitude | 16.41 (0.1) | |||||||
| R magnitude | 16.27 (0.2) | |||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | ||||||||
| g magnitude | ||||||||
| r magnitude | ||||||||
| i magnitude | ||||||||
| z magnitude | ||||||||
| G magnitude | 16.44 (0.003) | 16.46 | 16.44 | 16.44 (0.003) | ||||
| BP magnitude | 16.34 (0.003) | 16.29 | ||||||
| RP magnitude | 16.67 (0.005) | 16.66 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.002 | |||||||
* 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.