All names: 2MASS J10572994+3008283, SDSS J105730.00+300826.7, Gaia EDR3 733294781652279680, WDJ105729.96+300827.76, WDJ105729.96+300827.75, Gaia DR2 733294781652279680, USNO-B1.0 1201-00186446, GALEX J105730.0+300826, TIC 165718157, Gaia DR3 733294781652279680, SDSS J105730.00+300826.8, J1057+3008, LSPM J1057+3008W
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 10 57 30.12 (0.07) | 10 57 30.11 | 10 57 30.12 | 10 57 29.96 (0.07) | 10 57 30.11 | ||||||
| Declination | 30 08 24.14 (0.09) | 30 08 24.25 | 30 08 24.14 | 30 08 27.75 (0.09) | 30 08 24.25 | ||||||
| Spectral type | DC | DC | DC | DA: | DC | ||||||
| Effective temperature | [K] | 6187.0 (22) | 6231.0 (21) | 6187.0 (22) | 6775.0 (66) | ||||||
| log(g) | [cgs] | 7.94 (0.009) | 7.94 (0.01) | 7.93 (0.01) | 8.25 (0.02) | ||||||
| Mass | [M☉] | 0.538 (0.007) | 0.539 (0.01) | 0.53 (0.01) | 0.751 (0.02) | ||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 2.0400 | |||||||||
| log(H/He) | -3.0 | -3.0 | -3 | ||||||||
| 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] | 20.70 (0.09) | 20.53 (0.2) | 20.53 (0.2) | 20.70 | 20.70 (0.09) | 20.53 (0.2) | ||||
| Distance | [pc] | 48.32 (0.2) | 48.71 (0.5) | 48.71 (0.5) | 48.32 | 48.32 (0.2) | 48.71 (0.5) | ||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 132.4478908 (0.07) | 132.3498738 (0.2) | 132.448 (0.07) | 132.3498738 | ||||||
| Proper motion (declination) | [mas/yr] | -225.9946233 (0.09) | -226.1282366 (0.3) | -225.995 (0.09) | -226.1282366 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 17.10 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 16.80 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.65 (0.02) | 16.41 (0.1) | |||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 18.19 (0.01) | 18.19 (0.01) | 18.19 (0.01) | ||||||||
| g magnitude | 17.58 (0.005) | 17.58 (0.005) | |||||||||
| r magnitude | 17.38 (0.005) | 17.38 (0.005) | |||||||||
| i magnitude | 17.30 (0.006) | 17.30 (0.006) | |||||||||
| z magnitude | 17.31 (0.01) | 17.31 (0.01) | |||||||||
| G magnitude | 17.33 (0.008) | 17.35 | 17.33 | 17.33 (0.003) | 17.35 | ||||||
| BP magnitude | 17.55 (0.008) | 17.54 | 17.54 | ||||||||
| RP magnitude | 16.97 (0.009) | 16.97 | 16.97 | ||||||||
| Pan g magnitude | 17.55 (0.002) | 17.55 (0.002) | |||||||||
| Pan r magnitude | 17.34 (0.001) | 17.34 (0.002) | |||||||||
| Pan i magnitude | 17.27 (0.005) | 17.27 (0.005) | |||||||||
| Pan z magnitude | 17.31 (0.007) | 17.31 (0.007) | |||||||||
| Pan y magnitude | 17.31 (0.009) | 17.31 (0.008) | |||||||||
| 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.