All names: SDSS J011817.61+384249.3, GALEX J011817.6+384248, [HHD2009] SDSS J0118+3842, WD 0115+384, LAMOST J011817.61+384249.3, WIRED J011817.62+384249.3, SDSS J011817.61+384249.4, Gaia DR3 370046960520651008, SDSS J011817.62+384249.4, SDSS J011817.62+384249.3, Gaia DR2 370046960520651008, Gaia EDR3 370046960520651008
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 18 17.65 (0.1) | 01 18 17.62 | 01 18 17.65 (0.2) | 01 18 17.65 | 01 18 17.61 (0.1) | 01 18 17.30 | 01 18 17.62 | ||||
| Declination | 38 42 49.40 (0.1) | 38 42 49.36 | 38 42 49.40 (0.2) | 38 42 49.40 | 38 42 49.43 (0.1) | 38 42 46.08 | 38 42 49.37 | ||||
| Spectral type | DA | DA+M | DA1.8 | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 16411.0 (797) | 28767.0 (164) | ||||||||
| log(g) | [cgs] | 7.32 (0.07) | 7.94 (0.03) | ||||||||
| Mass | [M☉] | 0.324 (0.03) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 2.92 (0.2) | 3.07 (0.2) | 2.92 | 2.92 (0.2) | ||||||
| Distance | [pc] | 342.79 (18) | 325.83 (20) | 342.79 | 342.79 (18) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 30.81007313 (0.2) | 30.601298 (0.4) | 30.81 (0.2) | |||||||
| Proper motion (declination) | [mas/yr] | -1.802942547 (0.1) | -1.996168045 (0.3) | -1.803 (0.1) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | yes | WDMS | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 17.66 (0.01) | 17.66 (0.01) | 17.98 | 17.61 (0.02) | |||||||
| g magnitude | 17.78 (0.006) | 17.78 (0.006) | 18.11 | 17.80 (0.01) | |||||||
| r magnitude | 18.15 (0.007) | 18.15 (0.007) | 18.51 | 18.18 (0.02) | |||||||
| i magnitude | 18.26 (0.009) | 18.27 (0.009) | 18.66 | 18.31 (0.02) | |||||||
| z magnitude | 18.09 (0.02) | 18.09 (0.02) | 18.52 | 18.17 (0.03) | |||||||
| G magnitude | 17.96 (0.02) | 17.98 | 17.96 | 17.96 (0.004) | |||||||
| BP magnitude | 17.94 (0.02) | 17.85 | |||||||||
| RP magnitude | 17.96 (0.02) | 17.91 | |||||||||
| Pan g magnitude | 17.82 (0.005) | ||||||||||
| Pan r magnitude | 18.19 (0.004) | ||||||||||
| Pan i magnitude | 18.31 (0.005) | ||||||||||
| Pan z magnitude | 18.19 (0.01) | ||||||||||
| Pan y magnitude | 18.06 (0.01) | ||||||||||
| E(B-V) | 0.033 | ||||||||||
* 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.