All names: 2MASS J17375921+3223210, GALEX J173759.2+322321, Gaia DR3 4600968155176089472, SDSSJ173759.21+322320.9, SDSS J173759.21+322320.9, Gaia DR2 4600968155176089472, UCAC4 612-055885
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 37 59.22 | 17 37 59.22 (0.03) | ||
| Declination | 32 23 20.94 | 32 23 20.90 (0.03) | ||
| Spectral type | sdB | sdA | ||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.20 (0.05) | 0.08 (0.04) | |
| Distance | [pc] | 5012.53 (1284) | 12453.30 (5583) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.484 (0.08) | -4.363 (0.04) | |
| Proper motion (declination) | [mas/yr] | -3.841 (0.09) | -3.833 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.93 (0.03) | |||
| V magnitude | 16.01 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.27 (0.09) | 16.27 (0.09) | ||
| H magnitude | 16.04 (0.2) | 16.04 (0.2) | ||
| K magnitude | 15.49 | |||
| u magnitude | 16.48 (0.006) | 16.48 (0.006) | ||
| g magnitude | 15.83 (0.004) | 15.87 (0.05) | ||
| r magnitude | 16.15 (0.004) | 16.10 (0.01) | ||
| i magnitude | 16.39 (0.004) | 16.39 (0.004) | ||
| z magnitude | 16.59 (0.008) | 16.59 (0.008) | ||
| G magnitude | 16.01 (0.0009) | 15.99 (0.003) | ||
| BP magnitude | 15.95 (0.004) | |||
| RP magnitude | 16.07 (0.002) | |||
| Pan g magnitude | 15.86 (0.002) | |||
| Pan r magnitude | 16.16 (0.003) | |||
| Pan i magnitude | 16.40 (0.002) | |||
| Pan z magnitude | 16.58 (0.004) | |||
| Pan y magnitude | 16.66 (0.01) | |||
| E(B-V) | 0.030 | |||
* 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.