All names: WDJ003923.85-414449.46, HBQS 0036-4201, USNO-A2.0 0450-00229700, Gaia EDR3 4993225765971284352, WDJ003923.85-414449.45, Gaia DR2 4993225765971284352, Gaia DR3 4993225765971284352, UCAC4 242-000688, EC 00370-4201, GALEX J003923.8-414449, 2MASS J00392382-4144495
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|
| Right ascension | 00 39 23.87 (0.03) | 00 39 23.87 | 00 39 23.87 | 00 39 23.85 (0.03) | 00 39 23.87 | ||
| Declination | -41 44 50.67 (0.03) | -41 44 50.63 | -41 44 50.67 | -41 44 49.46 (0.03) | -41 44 50.63 | ||
| Spectral type | DA | DA | |||||
| Effective temperature | [K] | 9584.0 (60) | |||||
| log(g) | [cgs] | 8.01 (0.01) | |||||
| Mass | [M☉] | 0.607 (0.009) | |||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| Parallax | [mas] | 15.47 (0.05) | 15.48 (0.07) | 15.47 | 15.47 (0.05) | 15.48 (0.07) | |
| Distance | [pc] | 64.65 (0.2) | 64.60 (0.3) | 64.65 | 64.65 (0.2) | 64.60 (0.3) | |
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | 19.60673567 (0.04) | 19.68364017 (0.08) | 19.607 (0.04) | 19.68364017 | ||
| Proper motion (declination) | [mas/yr] | -75.85973396 (0.03) | -75.74854532 (0.08) | -75.86 (0.03) | -75.74854532 | ||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | 16.59 (0.01) | ||||||
| V magnitude | 16.46 (0.01) | ||||||
| R magnitude | 16.40 (0.3) | ||||||
| I magnitude | |||||||
| J magnitude | 16.23 (0.09) | ||||||
| H magnitude | 16.31 (0.2) | ||||||
| K magnitude | |||||||
| u magnitude | |||||||
| g magnitude | 16.46 (0.06) | ||||||
| r magnitude | 16.45 (0.03) | ||||||
| i magnitude | |||||||
| z magnitude | |||||||
| G magnitude | 16.37 (0.002) | 16.39 | 16.37 | 16.37 (0.003) | 16.39 | ||
| BP magnitude | 16.43 (0.002) | 16.43 | 16.43 | ||||
| RP magnitude | 16.27 (0.003) | 16.28 | 16.28 | ||||
| Pan g magnitude | |||||||
| Pan r magnitude | |||||||
| Pan i magnitude | |||||||
| Pan z magnitude | |||||||
| Pan y magnitude | |||||||
| E(B-V) | 0.001 | ||||||
* 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.