All names: SDSS J083913.45+183127.4, Gaia EDR3 659483951901141888, Gaia DR3 659483951901141888, Gaia DR2 659483947604129024, SDSS J083913.44+183127.3, GALEX J083913.4+183127
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 39 13.45 (0.4) | 08 39 13.44 | 08 39 13.45 (0.4) | 08 39 13.45 (0.4) | 08 39 13.45 | ||||
| Declination | 18 31 27.45 (0.2) | 18 31 27.37 | 18 31 27.45 (0.3) | 18 31 27.36 (0.2) | 18 31 27.38 | ||||
| Spectral type | DA | DA | DA | ||||||
| Effective temperature | [K] | 22775.0 (576) | |||||||
| log(g) | [cgs] | 8.39 (0.09) | |||||||
| Mass | [M☉] | 0.851 (0.06) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 1.50 (0.4) | 1.97 (0.5) | 1.50 (0.4) | |||||
| Distance | [pc] | 668.48 (188) | 506.41 (131) | 668.49 (188) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 2.504593024 (0.4) | 2.143426007 (0.8) | 2.505 (0.4) | |||||
| Proper motion (declination) | [mas/yr] | 5.68468432 (0.3) | 5.450349713 (0.5) | 5.685 (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 | 19.21 (0.02) | 19.21 (0.02) | 19.22 (0.03) | ||||||
| g magnitude | 19.29 (0.01) | 19.29 (0.01) | 19.29 (0.02) | ||||||
| r magnitude | 19.63 (0.02) | 19.63 (0.02) | 19.65 (0.02) | ||||||
| i magnitude | 19.96 (0.03) | 19.95 (0.03) | 19.96 (0.03) | ||||||
| z magnitude | 20.65 (0.2) | 20.65 (0.2) | 20.63 (0.2) | ||||||
| G magnitude | 19.48 (0.04) | 19.54 | 19.48 (0.005) | ||||||
| BP magnitude | 19.35 (0.04) | 19.28 | |||||||
| RP magnitude | 19.61 (0.07) | 19.46 | |||||||
| Pan g magnitude | 19.30 (0.01) | ||||||||
| Pan r magnitude | 19.65 (0.01) | ||||||||
| Pan i magnitude | 19.96 (0.02) | ||||||||
| Pan z magnitude | 20.17 (0.01) | ||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.029 | ||||||||
* 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.