All names: AP J17250629+5857349, PG 1724+590, 2MASS J17250629+5857349, GALEX J172506.2+585734, LB 333, SDSS J172506.28+585735.0, Gaia EDR3 1434022067544616576, PG1724+590, Gaia DR3 1434022067544616576, Gaia DR2 1434022067544616576, TIC 356107943
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 17 25 06.28 (0.03) | 17 25 06.32 | 17 25 06.29 (0.03) | ||
| Declination | 58 57 34.98 (0.03) | 58 57 35.08 | 58 57 35.03 (0.03) | ||
| Spectral type | sdB | sdB2VIIHe5 | |||
| 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] | 0.95 (0.03) | 0.99 (0.04) | 0.95 (0.03) | |
| Distance | [pc] | 1047.89 (36) | 1013.38 (43) | 1047.89 (36) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -7.677 (0.04) | -7.559 (0.08) | -7.677 (0.04) | |
| Proper motion (declination) | [mas/yr] | -3.265 (0.04) | -3.295 (0.08) | -3.265 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.81 | ||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.17 (0.05) | 15.17 (0.05) | |||
| H magnitude | 15.45 (0.1) | 15.45 (0.1) | |||
| K magnitude | 15.38 (0.2) | 15.38 (0.2) | |||
| u magnitude | 14.08 (0.003) | 14.12 (0.01) | |||
| g magnitude | 14.30 (0.003) | 14.34 (0.01) | |||
| r magnitude | 14.84 (0.004) | 14.82 (0.01) | |||
| i magnitude | 15.16 (0.004) | 15.17 (0.01) | |||
| z magnitude | 15.50 (0.006) | 15.53 (0.01) | |||
| G magnitude | 14.58 (0.003) | 14.60 (0.0005) | 14.58 (0.003) | ||
| BP magnitude | 14.44 (0.003) | 14.38 (0.007) | |||
| RP magnitude | 14.86 (0.004) | 14.86 (0.002) | |||
| Pan g magnitude | 14.44 (0.004) | ||||
| Pan r magnitude | 14.85 (0.003) | ||||
| Pan i magnitude | 15.19 (0.002) | ||||
| Pan z magnitude | 15.46 (0.002) | ||||
| Pan y magnitude | 15.65 (0.01) | ||||
| E(B-V) | 0.024 | ||||
* 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.