All names: Gaia EDR3 1658023952268123776, SDSS J140238.57+570747.4, GALEX J140238.5+570747, Gaia DR3 1658023952268123776, SDSS J140238.58+570747.2, SDSS J140238.57+570747.3, USNO-B1.0 1471-00281150, SDSSJ140238.58+570747.2, SBSS 1400+573, Gaia DR2 1658023952268123776
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 02 38.57 (0.1) | 14 02 38.57 | 14 02 38.58 | 14 02 38.57 (0.2) | 14 02 38.58 (0.1) | 14 02 38.58 | ||
| Declination | 57 07 47.29 (0.1) | 57 07 47.41 | 57 07 47.20 | 57 07 47.29 (0.2) | 57 07 47.34 (0.1) | 57 07 47.23 | ||
| Spectral type | sdB | sdB | SD_auto | |||||
| Effective temperature | [K] | 26809.0 (585) | ||||||
| log(g) | [cgs] | 5.04 (0.06) | ||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | -0.13 (0.2) | -0.22 (0.2) | -0.22 (0.2) | ||||
| Distance | [pc] | |||||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -4.060221805 (0.2) | -3.588 (0.4) | -3.587596903 (0.4) | -4.06 (0.2) | -3.1 | ||
| Proper motion (declination) | [mas/yr] | -3.234005269 (0.2) | -3.676 (0.3) | -3.676125878 (0.3) | -3.234 (0.2) | -12.5 | ||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 18.70 | |||||||
| V magnitude | ||||||||
| R magnitude | 19.80 | |||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 18.73 (0.02) | 18.73 (0.02) | 18.73 (0.02) | 18.76 (0.03) | ||||
| g magnitude | 18.79 (0.009) | 18.79 (0.009) | 18.79 (0.009) | 18.76 (0.05) | ||||
| r magnitude | 19.24 (0.01) | 19.24 (0.01) | 19.24 (0.01) | 19.22 (0.02) | ||||
| i magnitude | 19.57 (0.02) | 19.57 (0.03) | 19.57 (0.03) | 19.54 (0.03) | ||||
| z magnitude | 19.89 (0.1) | 19.89 (0.1) | 19.90 (0.1) | 19.82 (0.1) | ||||
| G magnitude | 19.01 (0.02) | 19.06 (0.003) | 19.06 | 19.01 (0.003) | ||||
| BP magnitude | 18.95 (0.02) | 18.89 (0.02) | 18.89 | |||||
| RP magnitude | 19.25 (0.04) | 19.22 (0.04) | 19.22 | |||||
| Pan g magnitude | 18.83 (0.01) | 18.83 (0.01) | ||||||
| Pan r magnitude | 19.23 (0.007) | 19.23 (0.007) | ||||||
| Pan i magnitude | 19.53 (0.01) | 19.53 (0.01) | ||||||
| Pan z magnitude | 19.74 (0.02) | 19.74 (0.01) | ||||||
| Pan y magnitude | 19.78 (0.07) | 19.79 (0.07) | ||||||
| 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.