All names: SDSS J212310.79+003518.85, Gaia EDR3 2690955718576470784, SDSS J212310.79+003518.8, Gaia DR3 2690955718576470784, LAMOST J212310.78+003518.8, SDSS J212310.79+003518.9, SDSS J212310.78+003518.8, Gaia DR2 2690955718576470784
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Gaia DR2 | Stilism | Koester & Kepler 2015 | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 23 10.79 (0.3) | 21 23 10.78 | 21 23 10.79 (1) | 21 23 10.79 | 21 23 10.79 (0.3) | |||||||
| Declination | 00 35 18.93 (0.4) | 00 35 18.82 | 00 35 18.93 (1) | 00 35 18.93 | 00 35 18.84 (0.4) | |||||||
| Spectral type | DB | DB | DB | DB | ||||||||
| Effective temperature | [K] | 13394.0 | 13121.0 (86) | 13625.0 (78) | 12140.0 (752) | |||||||
| log(g) | [cgs] | 8.26 | 8.00 (0) | 8.00 (0) | 8.25 (0.1) | |||||||
| Mass | [M☉] | 0.747 | 0.743 (0.1) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | -5.873 | <-5.65 | ||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | <-9.05 | |||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 3.69 (0.4) | 3.69 | 3.69 (0.4) | ||||||||
| Distance | [pc] | 270.95 (26) | 339.00 | 270.95 | 270.95 (26) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -0.429056834 (0.4) | -0.429 (0.4) | |||||||||
| Proper motion (declination) | [mas/yr] | 5.824011645 (0.5) | 5.824 (0.5) | |||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 19.35 (0.03) | 19.35 (0.03) | 19.35 (0.03) | |||||||||
| g magnitude | 19.26 (0.01) | 19.26 (0.01) | 19.27 (0.01) | |||||||||
| r magnitude | 19.46 (0.01) | 19.46 (0.01) | 19.47 (0.01) | |||||||||
| i magnitude | 19.65 (0.02) | 19.65 (0.02) | 19.66 (0.02) | |||||||||
| z magnitude | 19.84 (0.07) | 19.84 (0.07) | 19.86 (0.07) | |||||||||
| G magnitude | 19.35 (0.03) | 19.41 | 19.35 | 19.35 (0.004) | ||||||||
| BP magnitude | 19.38 (0.03) | 19.39 | ||||||||||
| RP magnitude | 19.39 (0.05) | 19.41 | ||||||||||
| Pan g magnitude | 19.34 (0.02) | |||||||||||
| Pan r magnitude | 19.48 (0.009) | |||||||||||
| Pan i magnitude | 19.68 (0.006) | |||||||||||
| Pan z magnitude | 19.85 (0.02) | |||||||||||
| Pan y magnitude | 19.97 (0.1) | |||||||||||
| E(B-V) | 0.026 | |||||||||||
* 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.