All names: EGGR 556, LP 822-81, 2MASS J23251840-1751580, WD 2322-181, Gaia DR2 2393546245693497728, EC 23226-1808, MCT 2322-1808, Gaia EDR3 2393546245693497728, WD2322-181, TIC 9143444, LEHPM 5807, NLTT 56801, Gaia DR3 2393546245693497728, WDJ232518.41-175157.87, GALEX J232518.5-175159, G 273-40, PHL 506
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Bergeron et al. 2021 | Gaia DR2 | Stilism | Koester et al. 2014 | Gianninas et al. 2011 | Koester et al. 2009 | Koester et al. 2001 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 25 18.68 (0.04) | 23 25 18.67 (0.05) | 23 25 18.40 | 23 25 18.68 | 23 25 18.41 (0.04) | 23 25 18.67 | 23 25 18.17 | |||||||
| Declination | -17 51 57.88 (0.04) | -17 51 57.88 (0.05) | -17 51 58.00 | -17 51 57.88 | -17 51 57.87 (0.04) | -17 51 57.88 | -17 51 54.00 | |||||||
| Spectral type | DA | DA | DA | DA | DA2.2 | DA | ||||||||
| Effective temperature | [K] | 22130.0 (640) | 21862.0 (297) | 22900.0 (363) | 21683.0 (35) | 21474.0 (63) | 21848.0 (389) | |||||||
| log(g) | [cgs] | 7.76 (0.09) | 8.01 (0.09) | 8.03 (0.05) | 7.90 (0.006) | 7.83 (0.01) | 7.91 (0.02) | |||||||
| Mass | [M☉] | 0.507 (0.04) | 0.633 (0.05) | 0.65 (0.03) | 0.54 | 0.578 (0.01) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.0248 | ||||||||||||
| log(H/He) | ||||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | ||||||||||||||
| log(Ca/H) | ||||||||||||||
| log(C/H) | -7.7 (0.1) | |||||||||||||
| log(N/H) | ||||||||||||||
| log(O/H) | ||||||||||||||
| log(Na/H) | ||||||||||||||
| log(Mg/H) | ||||||||||||||
| log(Al/H) | ||||||||||||||
| log(Si/H) | -7.7 (0.1) | |||||||||||||
| 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] | 10.68 (0.05) | 10.55 (0.06) | 10.68 | 10.68 (0.05) | 10.55 (0.06) | ||||||||
| Distance | [pc] | 93.67 (0.5) | 93.00 | 94.80 (0.5) | 87.00 | 93.67 | 93.67 (0.5) | 94.80 (0.5) | ||||||
| Composition | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 239.0730956 (0.06) | 239.2440887 (0.1) | 239.073 (0.06) | 239.2440887 | |||||||||
| Proper motion (declination) | [mas/yr] | -0.925823003 (0.06) | -0.715093304 (0.09) | -0.926 (0.06) | -0.715093304 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 15.38 | 15.38 | 15.10 | |||||||||||
| V magnitude | 15.28 (0.05) | 16.10 | ||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 15.91 (0.07) | |||||||||||||
| H magnitude | 15.87 (0.1) | |||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | ||||||||||||||
| g magnitude | ||||||||||||||
| r magnitude | ||||||||||||||
| i magnitude | ||||||||||||||
| z magnitude | ||||||||||||||
| G magnitude | 15.35 (0.003) | 15.36 | 15.35 | 15.35 (0.003) | 15.36 | |||||||||
| BP magnitude | 15.25 (0.003) | 15.23 | 15.23 | |||||||||||
| RP magnitude | 15.56 (0.004) | 15.55 | 15.55 | |||||||||||
| Pan g magnitude | 15.19 (0.002) | |||||||||||||
| Pan r magnitude | 15.56 (0.003) | |||||||||||||
| Pan i magnitude | 15.86 (0.003) | |||||||||||||
| Pan z magnitude | 16.14 (0.004) | |||||||||||||
| Pan y magnitude | 16.30 (0.006) | |||||||||||||
| E(B-V) | 0.002 | |||||||||||||
* 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.