All names: SDSS J073738.57+392944.3, SDSS J073738.58+392944.34, Gaia EDR3 899504144788763392, SDSS J073738.58+392944.3, GALEX J073738.5+392944, Gaia DR2 899504144788763392, Gaia DR3 899504144788763392
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 07 37 38.58 (0.4) | 07 37 38.58 | 07 37 38.58 (0.6) | 07 37 38.58 (0.4) | ||||
| Declination | 39 29 44.28 (0.3) | 39 29 44.36 | 39 29 44.28 (0.5) | 39 29 44.31 (0.3) | ||||
| Spectral type | DA | DA | ||||||
| Effective temperature | [K] | 8200.0 (47) | ||||||
| log(g) | [cgs] | 6.88 (0.09) | ||||||
| Mass | [M☉] | 0.18788 (0.01) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.48 (0.4) | 0.45 (0.7) | 0.48 (0.4) | ||||
| Distance | [pc] | 2075.84 (1896) | 2219.71 (3327) | 2075.98 (1896) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 0.013846932 (0.4) | 0.27527099 (1) | 0.014 (0.4) | ||||
| Proper motion (declination) | [mas/yr] | -2.202401428 (0.3) | -3.464895039 (0.9) | -2.202 (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 | 21.20 (0.09) | 21.19 (0.09) | 21.19 (0.09) | |||||
| g magnitude | 20.01 (0.02) | 20.02 (0.02) | 20.02 (0.02) | |||||
| r magnitude | 19.93 (0.02) | 19.92 (0.02) | 19.92 (0.02) | |||||
| i magnitude | 19.97 (0.03) | 19.96 (0.03) | 19.96 (0.03) | |||||
| z magnitude | 19.95 (0.1) | 19.93 (0.1) | 19.93 (0.1) | |||||
| G magnitude | 19.86 (0.05) | 19.90 | 19.86 (0.005) | |||||
| BP magnitude | 20.04 (0.05) | 19.96 | ||||||
| RP magnitude | 19.52 (0.05) | 19.63 | ||||||
| Pan g magnitude | 19.99 (0.02) | |||||||
| Pan r magnitude | 19.91 (0.01) | |||||||
| Pan i magnitude | 19.92 (0.01) | |||||||
| Pan z magnitude | 20.03 (0.02) | |||||||
| Pan y magnitude | 19.86 (0.06) | |||||||
| E(B-V) | 0.039 | |||||||
* 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.