All names: GALEX J224244.6-041415, Gaia DR2 2625078449333017856, GSC 05237-00728, uvby98 620001106, GD 240, PB 7143, 2MASS J22424458-0414152, USNO-B1.0 0857-00585068, TIC 250326099, LP 700-73, WD 2240-045, Feige 106, Gaia DR3 2625078449333017856, EGGR 229, Gaia EDR3 2625078449333017856, PHL 380, NLTT 54628, CSI-04-22402
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Koester et al. 2005 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 42 44.83 (0.04) | 22 42 44.83 (0.09) | 22 42 44.83 | 22 42 44.62 (0.04) | 22 42 44.50 | ||||||
| Declination | -04 14 14.91 (0.04) | -04 14 14.92 (0.05) | -04 14 14.91 | -04 14 15.20 (0.04) | -04 14 16.08 | ||||||
| Spectral type | DA | DA | DA | DA1.1 | DAWK | ||||||
| Effective temperature | [K] | 45780.0 (770) | 44102.0 (107) | 41800.0 | 52282.0 (4537) | ||||||
| log(g) | [cgs] | 7.81 (0.06) | 7.72 (0.01) | 7.80 | 7.81 (0.04) | ||||||
| Mass | [M☉] | 0.59 (0.02) | 0.607 (0.03) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| log(C/H) | |||||||||||
| log(N/H) | |||||||||||
| log(O/H) | |||||||||||
| log(Na/H) | |||||||||||
| log(Mg/H) | |||||||||||
| log(Al/H) | |||||||||||
| log(Si/H) | |||||||||||
| log(P/H) | |||||||||||
| log(S/H) | |||||||||||
| log(Sc/H) | |||||||||||
| log(Ti/H) | |||||||||||
| log(Cr/H) | |||||||||||
| log(Mn/H) | |||||||||||
| log(Fe/H) | |||||||||||
| log(Ni/H) | |||||||||||
| Parallax | [mas] | 5.37 (0.05) | 5.33 (0.1) | 5.37 | 5.37 (0.05) | ||||||
| Distance | [pc] | 186.31 (2) | 187.47 (4) | 181.00 | 186.31 | 186.31 (2) | |||||
| Composition | H | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | 196.7552198 (0.05) | 196.8639571 (0.1) | 196.755 (0.06) | |||||||
| Proper motion (declination) | [mas/yr] | 18.34988291 (0.05) | 18.45821705 (0.1) | 18.35 (0.05) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 15.10 | ||||||||||
| V magnitude | 15.21 | 15.23 | |||||||||
| R magnitude | 15.30 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.07 (0.08) | ||||||||||
| H magnitude | 16.03 (0.2) | ||||||||||
| K magnitude | |||||||||||
| u magnitude | |||||||||||
| g magnitude | |||||||||||
| r magnitude | |||||||||||
| i magnitude | |||||||||||
| z magnitude | |||||||||||
| G magnitude | 15.14 (0.003) | 15.16 | 15.14 | 15.14 (0.003) | |||||||
| BP magnitude | 14.98 (0.003) | 14.96 | |||||||||
| RP magnitude | 15.45 (0.003) | 15.45 | |||||||||
| Pan g magnitude | 14.96 (0.003) | ||||||||||
| Pan r magnitude | 15.41 (0.003) | ||||||||||
| Pan i magnitude | 15.79 (0.003) | ||||||||||
| Pan z magnitude | 16.08 (0.005) | ||||||||||
| Pan y magnitude | 16.26 (0.006) | ||||||||||
| E(B-V) | 0.040 | ||||||||||
* 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.