All names: Gaia EDR3 2715965519298783232, USNO-A2.0 0975-21018342, Gaia DR3 2715965519298783232, LAMOST J223842.61+080226.0, Gaia DR2 2715965519298783232, SDSS J223842.61+080226.0, USNO-B1.0 0980-00722951, GALEX J223842.5+080226
| Parameter | Unit | Gaia EDR3 | Stilism | Guo et al. 2015 | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 22 38 42.60 (0.1) | 22 38 42.60 | 22 38 42.62 (0.1) | |||
| Declination | 08 02 25.72 (0.2) | 08 02 25.72 | 08 02 26.26 (0.2) | |||
| Spectral type | DA | DA | DA | |||
| Effective temperature | [K] | 9849.0 (272) | ||||
| log(g) | [cgs] | 7.28 (0.07) | ||||
| Mass | [M☉] | 0.283 (0.03) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 4.23 (0.2) | 4.23 | 4.23 (0.2) | ||
| Distance | [pc] | 236.65 (1e+01) | 236.66 | 236.65 (1e+01) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -17.239 (0.2) | -17.239 (0.2) | |||
| Proper motion (declination) | [mas/yr] | -33.666 (0.2) | -33.666 (0.2) | |||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 18.00 | |||||
| V magnitude | ||||||
| R magnitude | 18.00 | |||||
| I magnitude | ||||||
| J magnitude | 18.05 (0.04) | |||||
| H magnitude | 17.92 (0.06) | |||||
| K magnitude | 17.80 (0.1) | |||||
| u magnitude | 18.61 (0.02) | |||||
| g magnitude | 18.14 (0.006) | |||||
| r magnitude | 18.23 (0.007) | |||||
| i magnitude | 18.34 (0.01) | |||||
| z magnitude | 18.50 (0.03) | |||||
| G magnitude | 18.14 (0.003) | 18.14 | 18.14 (0.003) | |||
| BP magnitude | 18.21 (0.02) | |||||
| RP magnitude | 18.06 (0.03) | |||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.043 | |||||
* 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.