All names: SDSS J125503.10+252221.7, GALEX J125503.2+252221, Gaia DR3 3958198635442770816, Gaia EDR3 3958198635442770816, Gaia DR2 3958198635442770816, SDSS J125503.12+252221.7, SDSS J125503.10+252221.79
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | Gaia DR2 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 55 03.09 (0.2) | 12 55 03.12 | 12 55 03.09 (0.2) | 12 55 03.09 | 12 55 03.13 (0.2) | |||||||
| Declination | 25 22 21.66 (0.2) | 25 22 21.71 | 25 22 21.66 (0.2) | 25 22 21.66 | 25 22 21.62 (0.2) | |||||||
| Spectral type | DB: | DB | DB | DB | ||||||||
| Effective temperature | [K] | 11865.0 | 11581.0 | 11150.0 (282) | 11828.0 (632) | |||||||
| log(g) | [cgs] | 8.46 | 7.98 | 8.43 (0.2) | 8.07 (0.09) | |||||||
| Mass | [M☉] | 0.878 | 0.572 | 0.628 (0.08) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | <-6.531 | |||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 4.13 (0.2) | 4.01 (0.3) | 4.13 | 4.13 (0.2) | |||||||
| Distance | [pc] | 242.28 (14) | 249.25 (18) | 242.28 | 242.28 (14) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -35.72712742 (0.2) | -36.16478791 (0.4) | -35.727 (0.2) | ||||||||
| Proper motion (declination) | [mas/yr] | 2.502283798 (0.3) | 2.844641611 (0.3) | 2.502 (0.3) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 18.89 (0.02) | 18.91 (0.02) | 18.90 (0.02) | |||||||||
| g magnitude | 18.82 (0.009) | 18.82 (0.02) | 18.81 (0.009) | |||||||||
| r magnitude | 18.93 (0.01) | 18.97 (0.02) | 18.94 (0.01) | |||||||||
| i magnitude | 19.13 (0.01) | 19.16 (0.02) | 19.14 (0.01) | |||||||||
| z magnitude | 19.34 (0.04) | 19.39 (0.04) | 19.34 (0.04) | |||||||||
| G magnitude | 18.88 (0.02) | 18.92 | 18.88 | 18.88 (0.003) | ||||||||
| BP magnitude | 18.92 (0.02) | 18.91 | ||||||||||
| RP magnitude | 18.90 (0.04) | 18.82 | ||||||||||
| Pan g magnitude | 18.86 (0.02) | |||||||||||
| Pan r magnitude | 18.98 (0.01) | |||||||||||
| Pan i magnitude | 19.13 (0.007) | |||||||||||
| Pan z magnitude | 19.33 (0.02) | |||||||||||
| Pan y magnitude | 19.35 (0.05) | |||||||||||
| E(B-V) | 0.015 | |||||||||||
* 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.