All names: Gaia DR2 294712512593850880, GALEX J011545.2+253401, Gaia DR3 294712512593850880, Gaia EDR3 294712512593850880, SDSS J011545.21+253401.8, SDSS J011545.21+253401.7
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Simbad | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|
| Right ascension | 01 15 45.23 (0.7) | 01 15 45.22 | 01 15 45.22 (0.8) | 01 15 45.22 (0.7) | 01 15 45.21 | |
| Declination | 25 34 01.93 (0.5) | 25 34 01.90 | 25 34 01.93 (0.8) | 25 34 01.95 (0.5) | 25 34 01.77 | |
| Spectral type | DA | DA | ||||
| Effective temperature | [K] | 27258.0 (840) | ||||
| log(g) | [cgs] | 7.91 (0.1) | ||||
| Mass | [M☉] | 0.594 (0.07) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | -0.98 (0.9) | -3.96 (1) | |||
| Distance | [pc] | |||||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 5.500721705 (0.7) | 6.846108642 (2) | 5.501 (0.8) | ||
| Proper motion (declination) | [mas/yr] | -1.332909041 (0.7) | -1.326959442 (2) | -1.333 (0.7) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | 20.20 (0.04) | 20.28 (0.05) | 20.28 (0.05) | |||
| g magnitude | 20.33 (0.02) | 20.36 (0.02) | 20.36 (0.02) | |||
| r magnitude | 20.60 (0.03) | 20.64 (0.03) | 20.64 (0.03) | |||
| i magnitude | 20.83 (0.05) | 20.88 (0.05) | 20.88 (0.05) | |||
| z magnitude | 21.60 (0.4) | 21.38 (0.3) | 21.38 (0.3) | |||
| G magnitude | 20.47 (0.1) | 20.55 | 20.47 (0.007) | |||
| BP magnitude | 20.30 (0.1) | 20.38 | ||||
| RP magnitude | 20.30 (0.1) | 20.50 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | ||||||
* 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.