All names: SDSS J192715.04+382718.7, Gaia DR2 2052684550030830464, TIC 351059400, LAMOST J192715.04+382718.6, Gaia EDR3 2052684550030830464, Gaia DR3 2052684550030830464, SDSS J192715.05+382718.70, KIC 3343613, SDSS J192715.05+382718.7, SDSSJ192715.05+382718.7, EQ J1927.2+3827, 2MASS J19271504+3827186
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 19 27 15.04 (0.03) | 19 27 15.04 | 19 27 15.05 | 19 27 15.04 (0.04) | 19 27 15.04 (0.03) | ||||
| Declination | 38 27 18.64 (0.03) | 38 27 18.78 | 38 27 18.70 | 38 27 18.64 (0.05) | 38 27 18.77 (0.03) | ||||
| Spectral type | He-sdOB | He-sdO | sdOBHe | ||||||
| Effective temperature | [K] | 41944.0 (2000) | 43018.0 (5000) | ||||||
| log(g) | [cgs] | 5.67 (0.2) | 6.79 (0.05) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.43 (0.03) | 0.48 (0.05) | 0.48 (0.05) | 0.43 (0.03) | ||||
| Distance | [pc] | 2303.89 (181) | 2091.18 (203) | 2091.36 (203) | 2304.15 (181) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -0.578909735 (0.04) | -0.523 (0.09) | -0.522634697 (0.09) | -0.579 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | -8.618460476 (0.04) | -8.613 (0.09) | -8.612983463 (0.09) | -8.618 (0.04) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.10 (0.1) | 16.10 (0.1) | |||||||
| H magnitude | 16.13 (0.2) | 16.13 (0.2) | |||||||
| K magnitude | 17.10 | ||||||||
| u magnitude | 15.10 (0.004) | 15.10 (0.004) | 15.10 (0) | 15.10 (0.004) | |||||
| g magnitude | 15.35 (0.003) | 15.36 (0.003) | 15.35 (0) | 15.36 (0.003) | |||||
| r magnitude | 15.79 (0.003) | 15.79 (0.003) | 15.79 (0) | 15.79 (0.003) | |||||
| i magnitude | 16.10 (0.004) | 16.11 (0.004) | 16.10 (0) | 16.11 (0.004) | |||||
| z magnitude | 16.38 (0.008) | 16.38 (0.008) | 16.38 (0.01) | 16.38 (0.008) | |||||
| G magnitude | 15.59 (0.003) | 15.61 (0.0007) | 15.61 | 15.59 (0.003) | |||||
| BP magnitude | 15.47 (0.003) | 15.41 (0.008) | 15.41 | ||||||
| RP magnitude | 15.82 (0.003) | 15.81 (0.003) | 15.81 | ||||||
| Pan g magnitude | 15.48 (0.002) | 15.48 (0.002) | |||||||
| Pan r magnitude | 15.82 (0.002) | 15.82 (0.002) | |||||||
| Pan i magnitude | 16.16 (0.005) | 16.16 (0.005) | |||||||
| Pan z magnitude | 16.42 (0.003) | 16.42 (0.003) | |||||||
| Pan y magnitude | 16.59 (0.007) | 16.59 (0.007) | |||||||
| E(B-V) | 0.087 | ||||||||
* 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.