All names: WDJ001843.53+023323.75, WD 0016+022, Gaia EDR3 2548152217808246528, J0018+0233, PB 5856, 2MASS J00184353+0233236, TIC 293342282, SDSS J001843.57+023323.6, Gaia DR3 2548152217808246528, SDSS J001843.56+023323.6, LBQS 0016+0216, Gaia DR2 2548152217808246528
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 18 43.60 (0.06) | 00 18 43.60 (0.09) | 00 18 43.60 | 00 18 43.53 (0.06) | 00 18 43.60 | 00 18 42.98 | ||||
| Declination | 02 33 23.67 (0.05) | 02 33 23.67 (0.06) | 02 33 23.67 | 02 33 23.75 (0.05) | 02 33 23.67 | 02 33 21.24 | ||||
| Spectral type | DQ | DC | DQ | DQ | ||||||
| Effective temperature | [K] | 9313.0 (60) | 9139.0 (106) | |||||||
| log(g) | [cgs] | 8.08 (0.01) | 8.05 (0.02) | |||||||
| Mass | [M☉] | 0.625 (0.01) | 0.61 (0.02) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.8800 | ||||||||
| log(H/He) | -4.4 | |||||||||
| log(C/He) | ||||||||||
| 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] | 13.16 (0.09) | 13.30 (0.1) | 13.30 (0.1) | 13.16 | 13.16 (0.09) | 13.30 (0.1) | |||
| Distance | [pc] | 76.01 (0.5) | 75.19 (0.6) | 75.16 (0.6) | 76.01 | 76.01 (0.5) | 75.16 (0.6) | |||
| Composition | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | 66.70579163 (0.1) | 67.04556293 (0.3) | 66.706 (0.1) | 67.04556293 | |||||
| Proper motion (declination) | [mas/yr] | -5.121754569 (0.07) | -5.276317465 (0.1) | -5.122 (0.07) | -5.276317465 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 17.01 (0.02) | 17.01 (0.1) | ||||||||
| H magnitude | 16.96 (0.04) | 16.51 (0.2) | ||||||||
| K magnitude | 17.08 (0.07) | |||||||||
| u magnitude | 17.26 (0.01) | 17.24 (0.01) | 17.24 (0.01) | |||||||
| g magnitude | 17.08 (0.005) | 17.08 (0.005) | ||||||||
| r magnitude | 17.16 (0.006) | 17.16 (0.006) | ||||||||
| i magnitude | 17.26 (0.006) | 17.26 (0.006) | ||||||||
| z magnitude | 17.42 (0.01) | 17.42 (0.01) | ||||||||
| G magnitude | 17.07 (0.005) | 17.10 | 17.07 | 17.07 (0.003) | 17.10 | |||||
| BP magnitude | 17.13 (0.005) | 17.10 | 17.10 | |||||||
| RP magnitude | 16.98 (0.008) | 16.96 | 16.96 | |||||||
| Pan g magnitude | 17.11 (0.006) | 17.11 (0.005) | ||||||||
| Pan r magnitude | 17.16 (0.003) | 17.16 (0.003) | ||||||||
| Pan i magnitude | 17.29 (0.003) | 17.29 (0.003) | ||||||||
| Pan z magnitude | 17.43 (0.006) | 17.43 (0.006) | ||||||||
| Pan y magnitude | 17.54 (0.01) | 17.54 (0.01) | ||||||||
| E(B-V) | 0.003 | |||||||||
* 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.