All names: 2MASS J22424458-0414152, GD 240, Feige 106, LP 700-73, TIC 250326099, PB 7143, Gaia DR2 2625078449333017856, NLTT 54628, PHL 380, uvby98 620001106, GALEX J224244.6-041415, USNO-B1.0 0857-00585068, Gaia EDR3 2625078449333017856, GSC 05237-00728, CSI-04-22402, EGGR 229, Gaia DR3 2625078449333017856, WD 2240-045
| 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.