All names: Gaia DR3 804040486519166976, SDSS J102142.06+394225.4, J102142.06+394225.4, SDSS J102142.07+394225.4, Gaia EDR3 804040486519166976, SDSS J102142.06+394225.5, GALEX J102142.0+394226, Gaia DR2 804040486519166976
| Parameter | Unit | Gaia EDR3 | Barrientos et al. 2024 | Stilism | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|
| Right ascension | 10 21 42.12 (0.5) | 10 21 42.06 (0.5) | ||||
| Declination | 39 42 25.34 (0.5) | 39 42 25.52 (0.5) | ||||
| Spectral type | DA | DA | DA | |||
| Effective temperature | [K] | 7692.0 (303) | ||||
| log(g) | [cgs] | 8.29 (0.1) | ||||
| Mass | [M☉] | 0.78 (0.1) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | 1.6100 | ||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 5.44 (0.6) | 5.44 (0.6) | |||
| Distance | [pc] | 183.90 (20) | 183.90 (20) | |||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 42.111 (0.6) | 42.111 (0.6) | |||
| Proper motion (declination) | [mas/yr] | -11.739 (0.6) | -11.739 (0.6) | |||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | 20.80 (0.06) | |||||
| g magnitude | 20.39 (0.02) | |||||
| r magnitude | 20.27 (0.02) | |||||
| i magnitude | 20.29 (0.03) | |||||
| z magnitude | 20.17 (0.1) | |||||
| G magnitude | 20.24 (0.006) | 20.24 (0.006) | ||||
| BP magnitude | 20.31 (0.06) | |||||
| RP magnitude | 19.89 (0.1) | |||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.012 | |||||
* 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.