All names: USNO-B1.0 0949-00045377, Gaia EDR3 3281864642080410112, GALEX J044704.5+045838, HS 0444+0453, PN G192.8-24.7, GALEX J044704.4+045841, WD 0444+049, Gaia DR2 3281864642080410112, Gaia DR3 3281864642080410112
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Werner & Herwig 2006 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 04 47 04.51 (0.05) | 04 47 04.51 (0.07) | 04 47 04.51 | 04 47 04.50 (0.05) | 04 47 04.22 | |||
| Declination | 04 58 40.96 (0.03) | 04 58 40.97 (0.05) | 04 58 40.96 | 04 58 41.34 (0.03) | 04 59 18.96 | |||
| Spectral type | PG1159 | DO | DQZO.5 | DQZO.5 | ||||
| Effective temperature | [K] | 100000.0 | 123369.0 (39106) | |||||
| log(g) | [cgs] | 7.50 | 7.96 (0.4) | |||||
| Mass | [M☉] | 0.59 | 0.744 (0.2) | |||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 2.27 (0.06) | 2.16 (0.1) | 2.27 | 2.27 (0.06) | |||
| Distance | [pc] | 440.39 (12) | 461.92 (21) | 440.39 | 440.39 (12) | |||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 6.914886368 (0.07) | 6.937357171 (0.2) | 6.915 (0.07) | ||||
| Proper motion (declination) | [mas/yr] | -24.04618559 (0.05) | -23.96220111 (0.1) | -24.046 (0.06) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 15.90 | |||||||
| V magnitude | ||||||||
| R magnitude | 16.10 | |||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | ||||||||
| g magnitude | ||||||||
| r magnitude | ||||||||
| i magnitude | ||||||||
| z magnitude | ||||||||
| G magnitude | 16.23 (0.003) | 16.26 | 16.23 | 16.23 (0.003) | ||||
| BP magnitude | 16.05 (0.003) | 16.02 | ||||||
| RP magnitude | 16.56 (0.004) | 16.56 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.084 | |||||||
* 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.