All names: Gaia EDR3 696796321369574016, Gaia DR2 696796321369574016, GALEX J093907.5+300901, SDSS J093907.56+300900.8, Gaia DR3 696796321369574016, SDSS J093907.57+300900.9
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 39 07.59 (0.6) | 09 39 07.57 | 09 39 07.58 (1) | 09 39 07.56 (0.6) | 09 39 07.57 | |||
| Declination | 30 09 00.71 (0.6) | 30 09 00.86 | 30 09 00.72 (2) | 30 09 00.86 (0.6) | 30 09 00.87 | |||
| Spectral type | DA | DA | DA | |||||
| Effective temperature | [K] | 13159.0 (447) | ||||||
| log(g) | [cgs] | 7.87 (0.1) | ||||||
| Mass | [M☉] | 0.541 (0.07) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | -0.02 (0.8) | ||||||
| Distance | [pc] | |||||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 22.83067351 (0.7) | 22.831 (0.7) | |||||
| Proper motion (declination) | [mas/yr] | -8.955350027 (0.7) | -8.955 (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 | 20.40 (0.06) | 20.41 (0.06) | 20.41 (0.06) | |||||
| g magnitude | 20.05 (0.02) | 20.07 (0.02) | 20.07 (0.02) | |||||
| r magnitude | 20.16 (0.02) | 20.20 (0.03) | 20.20 (0.03) | |||||
| i magnitude | 20.46 (0.04) | 20.51 (0.04) | 20.51 (0.04) | |||||
| z magnitude | 20.94 (0.2) | 20.93 (0.2) | 20.93 (0.2) | |||||
| G magnitude | 20.11 (0.06) | 20.18 | 20.11 (0.005) | |||||
| BP magnitude | 20.08 (0.06) | 20.01 | ||||||
| RP magnitude | 20.01 (0.1) | 20.03 | ||||||
| Pan g magnitude | 20.02 (0.01) | |||||||
| Pan r magnitude | 20.30 (0.02) | |||||||
| Pan i magnitude | 20.47 (0.04) | |||||||
| Pan z magnitude | 20.72 (0.05) | |||||||
| Pan y magnitude | 20.39 (0.4) | |||||||
| 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.