All names: GALEX J004527.5-233630, LP 825-786, PHL 823, USNO-B1.0 0663-00009526, WD 0042-238, Gaia DR2 2348747743931814656, WD 0042-23, WDJ004527.50-233629.29, Gaia EDR3 2348747743931814656, WT 1144, NLTT 2497, J0045-2336, Ton S 169, LEHPM 938, G 268-40, G268-40, Gaia DR3 2348747743931814656
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Jewett et al. 2024 | Gaia DR2 | Stilism | Weidemann and Koester 1995 | Koester et al. 1982a | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 45 27.83 (0.05) | 00 45 27.82 (0.08) | 00 45 27.83 | 00 45 27.50 (0.05) | 00 45 27.82 | 00 45 27.12 | ||||||
| Declination | -23 36 31.61 (0.04) | -23 36 31.54 (0.05) | -23 36 31.61 | -23 36 29.28 (0.04) | -23 36 31.54 | -23 36 30.24 | ||||||
| Spectral type | DQ | DQ | DQ | DB | DQ | DQ6 | ||||||
| Effective temperature | [K] | 11540.0 (43) | 10500.0 | 10500.0 (200) | 11340.0 (141) | |||||||
| log(g) | [cgs] | 8.87 | 8.82 (0.01) | |||||||||
| Mass | [M☉] | 1.126 (0.004) | 1.1 (0.008) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 1.8000 (0.02) | ||||||||||
| log(H/He) | -4.0 | |||||||||||
| log(C/He) | -2.7 | -2.7 | ||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| log(N/He) | ||||||||||||
| log(O/He) | ||||||||||||
| log(Na/He) | ||||||||||||
| log(Mg/He) | ||||||||||||
| log(Al/He) | ||||||||||||
| log(Si/He) | ||||||||||||
| log(P/He) | ||||||||||||
| log(S/He) | ||||||||||||
| log(Cl/He) | ||||||||||||
| log(Sc/He) | ||||||||||||
| log(Ti/He) | ||||||||||||
| log(V/He) | ||||||||||||
| log(Cr/He) | ||||||||||||
| log(Mn/He) | ||||||||||||
| log(Fe/He) | ||||||||||||
| log(Co/He) | ||||||||||||
| log(Ni/He) | ||||||||||||
| log(Cu/He) | ||||||||||||
| log(Zn/He) | ||||||||||||
| log(Ga/He) | ||||||||||||
| log(Ge/He) | ||||||||||||
| log(Sr/He) | ||||||||||||
| Parallax | [mas] | 21.17 (0.07) | 21.09 (0.1) | 21.17 | 21.17 (0.07) | 21.09 (0.1) | ||||||
| Distance | [pc] | 47.23 (0.2) | 47.42 (0.3) | 47.23 | 47.23 (0.2) | 47.42 (0.3) | ||||||
| Composition | He | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 283.5647538 (0.06) | 283.5156656 (0.1) | 283.565 (0.06) | 283.5156656 | |||||||
| Proper motion (declination) | [mas/yr] | -145.4240022 (0.07) | -145.2996629 (0.09) | -145.424 (0.07) | -145.2996629 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 16.70 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | 16.70 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | ||||||||||||
| g magnitude | ||||||||||||
| r magnitude | ||||||||||||
| i magnitude | ||||||||||||
| z magnitude | ||||||||||||
| G magnitude | 16.65 (0.004) | 16.67 | 16.65 | 16.65 (0.003) | 16.67 | |||||||
| BP magnitude | 16.65 (0.004) | 16.60 | 16.60 | |||||||||
| RP magnitude | 16.64 (0.006) | 16.63 | 16.63 | |||||||||
| Pan g magnitude | 16.66 (0.004) | |||||||||||
| Pan r magnitude | 16.76 (0.004) | |||||||||||
| Pan i magnitude | 16.96 (0.005) | |||||||||||
| Pan z magnitude | 17.14 (0.007) | |||||||||||
| Pan y magnitude | 17.26 (0.009) | |||||||||||
| E(B-V) | 0.001 | |||||||||||
* 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.