All names: TIC 298983423, 2MASS J04421826-0448202, Gaia DR3 3200742536743625600, SDSS J044218.27-044820.2, WD 0439-048, SDSS J044218.27-044820.3, Gaia EDR3 3200742536743625600, [SGR2010] J0442-0448, SDSS J044218.26-044820.2, Gaia DR2 3200742536743625600
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 04 42 18.27 (0.4) | 04 42 18.27 | 04 42 18.27 (0.5) | 04 42 18.26 (0.4) | 04 42 18.41 | 04 42 18.27 | |||
| Declination | -04 48 20.36 (0.2) | -04 48 20.30 | -04 48 20.35 (0.3) | -04 48 20.20 (0.2) | -04 48 15.48 | -04 48 20.25 | |||
| Spectral type | DA+M3 | DA4.2+M3 | DA+M | ||||||
| Effective temperature | [K] | 6300.0 (3) | |||||||
| log(g) | [cgs] | 5.00 (0.005) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.99 (0.5) | 2.02 (0.6) | 0.99 (0.5) | |||||
| Distance | [pc] | 1012.62 (511) | 494.83 (137) | 1012.66 (511) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 1.508076815 (0.6) | 3.696 (1) | 1.508 (0.6) | |||||
| Proper motion (declination) | [mas/yr] | -9.546395468 (0.4) | -5.188 (0.7) | -9.546 (0.4) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | yes | WDMS | |||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 15.41 (0.05) | ||||||||
| H magnitude | 14.82 (0.07) | ||||||||
| K magnitude | 14.67 (0.08) | ||||||||
| u magnitude | 19.96 (0.05) | 19.96 (0.05) | 19.96 | 19.96 (0.05) | |||||
| g magnitude | 19.12 (0.01) | 19.12 (0.01) | 19.12 | 19.14 (0.02) | |||||
| r magnitude | 18.41 (0.008) | 18.41 (0.008) | 18.41 | 18.42 (0.01) | |||||
| i magnitude | 17.39 (0.006) | 17.39 (0.006) | 17.39 | 17.40 (0.01) | |||||
| z magnitude | 16.77 (0.01) | 16.77 (0.01) | 16.77 | 16.79 (0.02) | |||||
| G magnitude | 18.10 (0.03) | 18.06 | 18.10 (0.006) | ||||||
| BP magnitude | 19.01 (0.03) | 18.94 | |||||||
| RP magnitude | 16.98 (0.006) | 16.99 | |||||||
| Pan g magnitude | 19.03 (0.005) | ||||||||
| Pan r magnitude | 18.43 (0.006) | ||||||||
| Pan i magnitude | 17.41 (0.005) | ||||||||
| Pan z magnitude | 16.91 (0.003) | ||||||||
| Pan y magnitude | 16.64 (0.005) | ||||||||
| E(B-V) | 0.033 | ||||||||
* 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.