All names: HS 1837+5913, TIC 359499459, Gaia EDR3 2154810316748450432, UCAC4 747-054079, HS1837+5913, Gaia DR2 2154810316748450432, WISE J183746.47+591558.7, Gaia DR3 2154810316748450432, WISEA J183746.46+591558.7, GALEX J183746.3+591558, 2MASS J18374645+5915588, LAMOST J183746.46+591558.8
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 18 37 46.47 (0.03) | 18 37 46.45 | 18 37 46.47 (0.03) | ||
| Declination | 59 15 58.66 (0.03) | 59 15 59.55 | 59 15 58.87 (0.03) | ||
| Spectral type | He-sdOB | sdOBHe | |||
| Effective temperature | [K] | 39210.0 (70) | |||
| log(g) | [cgs] | 5.72 (0.05) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.79 (0.03) | 0.64 (0.05) | 0.79 (0.03) | |
| Distance | [pc] | 1261.19 (51) | 1551.35 (118) | 1261.19 (51) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 1.028 (0.04) | 1.216 (0.09) | 1.028 (0.04) | |
| Proper motion (declination) | [mas/yr] | -13.405 (0.04) | -13.287 (0.1) | -13.405 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.25 (0.01) | ||||
| V magnitude | 14.57 (0.01) | ||||
| R magnitude | 15.02 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 15.34 (0.05) | 15.34 (0.05) | |||
| H magnitude | 15.45 (0.1) | 15.45 (0.1) | |||
| K magnitude | 15.39 (0.1) | 15.39 (0.1) | |||
| u magnitude | |||||
| g magnitude | 14.26 (0.01) | ||||
| r magnitude | 14.79 (0.01) | ||||
| i magnitude | 15.07 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 14.58 (0.003) | 14.59 (0.0007) | 14.58 (0.003) | ||
| BP magnitude | 14.43 (0.003) | 14.36 (0.007) | |||
| RP magnitude | 14.88 (0.004) | 14.87 (0.004) | |||
| Pan g magnitude | 14.45 (0.002) | ||||
| Pan r magnitude | 14.84 (0.002) | ||||
| Pan i magnitude | 15.21 (0.001) | ||||
| Pan z magnitude | 15.49 (0.004) | ||||
| Pan y magnitude | 15.67 (0.006) | ||||
| E(B-V) | 0.034 | ||||
* 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.