All names: GALEX J224153.3+043257, PM J22418+0432, Gaia DR3 2704955971931335168, Gaia EDR3 2704955971931335168, LP 580-59, WDJ224153.39+043258.41, NLTT 54596, USNO-B1.0 0945-00581951, SDSS J224153.46+043256.6, J2241+0432, 22418+0432, Gaia DR2 2704955971931335168, LSPM J2241+0433
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Blouin & Dufour 2019 | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 41 53.52 (0.1) | 22 41 53.51 (0.2) | 22 41 53.52 | 22 41 53.39 (0.1) | 22 41 53.51 | |||||||
| Declination | 04 32 55.22 (0.1) | 04 32 55.32 (0.2) | 04 32 55.22 | 04 32 58.41 (0.1) | 04 32 55.32 | |||||||
| Spectral type | DQ | DQ | DQpec | DQpec | DC: | DQ | ||||||
| Effective temperature | [K] | 5875.0 (16) | 5962.0 (15) | 5903.0 (38) | 5000.0 | 5250.0 (160) | ||||||
| log(g) | [cgs] | 7.92 (0.01) | 7.93 (0.02) | 7.92 (0.03) | 8.00 (0) | 7.73 (0.04) | ||||||
| Mass | [M☉] | 0.526 (0.01) | 0.533 (0.01) | 0.524 (0.02) | 0.57 (0.1) | 0.421 (0.03) | ||||||
| log(Luminosity) | [L☉] | -4.06 | ||||||||||
| Cooling age | [Gyr] | 2.3300 | ||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | -6.92 | -6.84 | -6.931 (0.04) | -8.81 | ||||||||
| 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] | 16.35 (0.1) | 16.20 (0.2) | 16.20 (0.2) | 16.20 (0.2) | 16.35 | 16.35 (0.1) | 16.20 (0.2) | ||||
| Distance | [pc] | 61.14 (0.5) | 61.73 (0.9) | 61.74 (0.9) | 61.74 (0.9) | 43.40 (4) | 61.14 | 61.14 (0.5) | 61.74 (0.9) | |||
| Composition | He | He | He | He | ||||||||
| Proper motion (right ascension) | [mas/yr] | 119.2963529 (0.1) | 119.9091337 (0.4) | 119.296 (0.1) | 119.9091337 | |||||||
| Proper motion (declination) | [mas/yr] | -199.8153407 (0.1) | -199.4012838 (0.3) | -199.815 (0.1) | -199.4012838 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 18.70 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | 17.60 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 17.15 (0.03) | |||||||||||
| H magnitude | 16.99 (0.04) | |||||||||||
| K magnitude | 17.03 (0.07) | |||||||||||
| u magnitude | 18.98 (0.02) | 18.99 (0.02) | 18.99 (0.02) | 18.99 (0.02) | ||||||||
| g magnitude | 18.27 (0.007) | 18.27 (0.007) | 18.27 (0.007) | |||||||||
| r magnitude | 17.92 (0.007) | 17.92 (0.007) | 17.92 (0.007) | |||||||||
| i magnitude | 17.80 (0.008) | 17.80 (0.008) | 17.80 (0.008) | |||||||||
| z magnitude | 17.82 (0.03) | 17.82 (0.03) | 17.82 (0.03) | |||||||||
| G magnitude | 17.94 (0.02) | 17.96 | 17.94 | 17.94 (0.003) | 17.96 | |||||||
| BP magnitude | 18.25 (0.02) | 18.24 | 18.24 | |||||||||
| RP magnitude | 17.49 (0.01) | 17.48 | 17.48 | |||||||||
| Pan g magnitude | 18.29 (0.004) | 18.29 (0.004) | 18.29 (0.004) | |||||||||
| Pan r magnitude | 17.94 (0.004) | 17.94 (0.004) | 17.94 (0.004) | |||||||||
| Pan i magnitude | 17.84 (0.004) | 17.84 (0.004) | 17.84 (0.004) | |||||||||
| Pan z magnitude | 17.83 (0.006) | 17.83 (0.007) | 17.83 (0.006) | |||||||||
| Pan y magnitude | 17.89 (0.02) | 17.89 (0.02) | 17.89 (0.02) | |||||||||
| 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.