All names: Gaia DR3 2621565333592122496, J2232-0744, WDJ223224.01-074434.26, WIRED J223224.00-074434.2, 2229-080, SDSS J223224.00-074434.2, SDSS J223224.00-074434.3, Gaia DR2 2621565333592122496, Gaia EDR3 2621565333592122496, LP 700-32, GALEX J223223.9-074434, WD 2229-080, NLTT 54109
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | Blouin & Dufour 2019 | Leggett et al. 2018 | Gaia DR2 | Stilism | Harris et al. 2003 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 32 23.74 (0.1) | 22 32 24.00 | 22 32 23.75 (0.1) | 22 32 23.74 | 22 32 24.02 (0.1) | 22 32 23.75 | 22 32 24.00 | 22 32 24.26 | 22 32 24.00 | |||||||||
| Declination | -07 44 36.31 (0.1) | -07 44 34.28 | -07 44 36.25 (0.1) | -07 44 36.31 | -07 44 34.25 (0.1) | -07 44 36.25 | -07 44 34.30 | -07 44 32.28 | -07 44 34.27 | |||||||||
| Spectral type | DQ | DQ | DQpec | DQ8.1 | DQ | DQ | DQ | DQ | DQpec | DQ | DQPEC | DQ | ||||||
| Effective temperature | [K] | 6033.0 (11) | 6377.0 (11) | 6137.0 (44) | 6197.0 (21) | 6487.0 (48) | 6300.0 (3) | 6300.0 (3) | ||||||||||
| log(g) | [cgs] | 8.12 (0.008) | 8.24 (0.01) | 8.13 (0.03) | 8.23 (0.04) | 8.25 (0.02) | 9.00 (0.01) | 10.00 (0.003) | ||||||||||
| Mass | [M☉] | 0.648 (0.007) | 0.725 (0.01) | 0.651 (0.02) | 0.717 (0.04) | 0.734 (0.01) | ||||||||||||
| log(Luminosity) | [L☉] | |||||||||||||||||
| Cooling age | [Gyr] | 3.4800 | 3.8170 (0.3) | |||||||||||||||
| log(H/He) | ||||||||||||||||||
| log(C/He) | -5.81 | -5.47 | -5.562 (0.07) | |||||||||||||||
| 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] | 18.39 (0.1) | 18.27 (0.2) | 18.27 (0.2) | 18.84 (0.7) | 18.27 (0.2) | 18.39 | 18.39 (0.1) | 18.27 (0.2) | |||||||||
| Distance | [pc] | 54.37 (0.4) | 54.73 (0.5) | 54.74 (0.5) | 53.08 (2) | 54.74 (0.5) | 54.37 | 54.37 (0.4) | 54.74 (0.5) | |||||||||
| Composition | He | He | He | |||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -256.5394312 (0.2) | -256.3327684 (0.3) | -256.539 (0.2) | -256.333 | -259.0 | ||||||||||||
| Proper motion (declination) | [mas/yr] | -128.8342231 (0.1) | -128.5579781 (0.3) | -128.834 (0.1) | -128.558 | -133.4 | ||||||||||||
| Variability | ||||||||||||||||||
| Magnetic | ||||||||||||||||||
| Bd | [MG] | |||||||||||||||||
| Infrared excess (disk) | ||||||||||||||||||
| Binarity | ||||||||||||||||||
| B magnitude | ||||||||||||||||||
| V magnitude | 17.59 | |||||||||||||||||
| R magnitude | ||||||||||||||||||
| I magnitude | ||||||||||||||||||
| J magnitude | 17.35 (0.02) | |||||||||||||||||
| H magnitude | ||||||||||||||||||
| K magnitude | 16.83 (0.06) | |||||||||||||||||
| u magnitude | 18.48 (0.02) | 18.48 (0.02) | 18.48 (0.02) | 18.41 | 18.48 (0.02) | 18.48 (0.02) | 18.52 (0.03) | 18.41 | 18.51 (0.03) | |||||||||
| g magnitude | 18.40 (0.008) | 18.40 (0.008) | 18.38 | 18.40 (0.008) | 18.40 (0.008) | 18.41 (0.01) | 18.38 | 18.41 (0.02) | ||||||||||
| r magnitude | 17.78 (0.006) | 17.78 (0.006) | 17.79 | 17.78 (0.006) | 17.78 (0.006) | 17.80 (0.02) | 17.79 | 17.80 (0.02) | ||||||||||
| i magnitude | 17.66 (0.007) | 17.66 (0.007) | 17.66 | 17.66 (0.007) | 17.66 (0.007) | 17.67 (0.02) | 17.66 | 17.67 (0.02) | ||||||||||
| z magnitude | 17.75 (0.02) | 17.75 (0.02) | 17.75 | 17.75 (0.02) | 17.75 (0.02) | 17.78 (0.03) | 17.75 | 17.77 (0.03) | ||||||||||
| G magnitude | 17.90 (0.01) | 17.91 | 17.90 | 17.90 (0.004) | 17.91 | |||||||||||||
| BP magnitude | 18.19 (0.01) | 18.11 | 18.11 | |||||||||||||||
| RP magnitude | 17.38 (0.03) | 17.34 | 17.34 | |||||||||||||||
| Pan g magnitude | 18.43 (0.004) | 18.43 (0.005) | 18.43 (0.004) | |||||||||||||||
| Pan r magnitude | 17.80 (0.003) | 17.80 (0.004) | 17.80 (0.003) | |||||||||||||||
| Pan i magnitude | 17.68 (0.002) | 17.68 (0.002) | 17.68 (0.002) | |||||||||||||||
| Pan z magnitude | 17.79 (0.006) | 17.79 (0.006) | 17.79 (0.006) | |||||||||||||||
| Pan y magnitude | 17.87 (0.03) | 17.87 (0.03) | 17.87 (0.03) | |||||||||||||||
| 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.