All names: SDSS J093829.30+185917.6, SDSS J093829.29+185917.6, GALEX J093829.4+185917, Gaia DR3 633418306480948864, Gaia DR2 633418306480948864, Gaia EDR3 633418306480948864
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 38 29.27 (0.6) | 09 38 29.30 | 09 38 29.27 (2) | 09 38 29.31 (0.6) | 09 38 29.30 | ||||
| Declination | 18 59 17.56 (0.6) | 18 59 17.64 | 18 59 17.56 (3) | 18 59 17.61 (0.6) | 18 59 17.65 | ||||
| Spectral type | DA | DA | DA | ||||||
| Effective temperature | [K] | 9520.0 (183) | |||||||
| log(g) | [cgs] | 8.09 (0.3) | |||||||
| Mass | [M☉] | 0.65 (0.2) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 2.57 (0.7) | 2.57 (0.7) | ||||||
| Distance | [pc] | 389.01 (100) | 389.00 (100) | ||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -34.59843732 (0.9) | -34.598 (0.9) | ||||||
| Proper motion (declination) | [mas/yr] | -3.402440745 (0.7) | -3.402 (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 | 20.61 (0.05) | 20.60 (0.06) | 20.60 (0.06) | ||||||
| g magnitude | 20.18 (0.02) | 20.20 (0.03) | 20.20 (0.03) | ||||||
| r magnitude | 20.18 (0.02) | 20.17 (0.02) | 20.17 (0.02) | ||||||
| i magnitude | 20.34 (0.03) | 20.36 (0.03) | 20.36 (0.03) | ||||||
| z magnitude | 20.32 (0.1) | 20.33 (0.1) | 20.33 (0.1) | ||||||
| G magnitude | 20.18 (0.08) | 20.22 | 20.18 (0.006) | ||||||
| BP magnitude | 20.26 (0.08) | 20.50 | |||||||
| RP magnitude | 20.06 (0.08) | 20.02 | |||||||
| Pan g magnitude | 20.18 (0.01) | ||||||||
| Pan r magnitude | 20.24 (0.02) | ||||||||
| Pan i magnitude | 20.32 (0.03) | ||||||||
| Pan z magnitude | 20.43 (0.04) | ||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.026 | ||||||||
* 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.