All names: GALEX J044901.4-252636, WISEA J044901.45-252636.3, WISE J044901.51-252636.5, HE 0446-2531, WDJ044901.40-252636.27, WD 0446-255, Gaia DR2 4881758307940843008, Gaia EDR3 4881758307940843008, USNO-B1.0 0645-00051338, Gaia DR3 4881758307940843008
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 04 49 01.40 (0.04) | 04 49 01.40 (0.05) | 04 49 01.40 | 04 49 01.40 (0.04) | 04 49 01.40 | 04 49 01.44 | |||
| Declination | -25 26 36.42 (0.05) | -25 26 36.41 (0.06) | -25 26 36.42 | -25 26 36.27 (0.05) | -25 26 36.41 | -25 26 32.28 | |||
| Spectral type | DZ | DBAZ | DBAZ4.0 | ||||||
| Effective temperature | [K] | 9934.0 (108) | |||||||
| log(g) | [cgs] | 7.84 (0.02) | |||||||
| Mass | [M☉] | 0.493 (0.01) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 11.00 (0.06) | 11.01 (0.08) | 11.00 | 11.00 (0.06) | 11.01 (0.08) | |||
| Distance | [pc] | 90.89 (0.5) | 90.84 (0.7) | 90.89 | 90.89 (0.5) | 90.84 (0.7) | |||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -3.061257616 (0.05) | -2.942489139 (0.1) | -3.061 (0.05) | -2.942489139 | ||||
| Proper motion (declination) | [mas/yr] | -9.235510481 (0.06) | -9.245205844 (0.1) | -9.236 (0.06) | -9.245205844 | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 16.90 | ||||||||
| V magnitude | |||||||||
| R magnitude | 16.50 | ||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | |||||||||
| g magnitude | |||||||||
| r magnitude | |||||||||
| i magnitude | |||||||||
| z magnitude | |||||||||
| G magnitude | 16.94 (0.005) | 16.97 | 16.94 | 16.94 (0.003) | 16.97 | ||||
| BP magnitude | 16.96 (0.005) | 16.95 | 16.95 | ||||||
| RP magnitude | 16.94 (0.007) | 16.94 | 16.94 | ||||||
| Pan g magnitude | 16.91 (0.004) | ||||||||
| Pan r magnitude | 17.05 (0.003) | ||||||||
| Pan i magnitude | 17.25 (0.003) | ||||||||
| Pan z magnitude | 17.46 (0.004) | ||||||||
| Pan y magnitude | 17.53 (0.009) | ||||||||
| 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.