All names: PG1519+640, BPS BS 17451-0008, FBS B 728, Gaia DR3 1643840428364277248, SBC9 3337, PG 1519+640, TYC 4184-139-1, GSC 04184-00139, USNO-A2.0 1500-05910265, 2MASS J15203137+6352082, GALEX J152031.0+635209, FBS 1519+640, CHSS 2750, [TFW97] J152031.32+635207.95, Gaia DR2 1643840428364277248, TIC 202491630, Gaia EDR3 1643840428364277248
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 15 20 31.43 (0.04) | 15 20 31.32 | 15 20 31.37 (0.04) | ||
| Declination | 63 52 08.75 (0.04) | 63 52 08.00 | 63 52 08.25 (0.04) | ||
| Spectral type | sdB+WD | sdB1.5VIIHe5 | |||
| Effective temperature | [K] | 30600.0 (500) | |||
| log(g) | [cgs] | 5.67 (0.05) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 2.73 (0.04) | 2.77 (0.04) | 2.73 (0.04) | |
| Distance | [pc] | 365.74 (5) | 360.75 (5) | 365.74 (5) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 24.558 (0.06) | 24.593 (0.09) | 24.558 (0.06) | |
| Proper motion (declination) | [mas/yr] | 31.379 (0.06) | 31.293 (0.09) | 31.379 (0.06) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 12.03 (0.1) | ||||
| V magnitude | 12.18 (0.2) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 13.01 (0.02) | 13.01 (0.02) | |||
| H magnitude | 13.19 (0.03) | 13.19 (0.03) | |||
| K magnitude | 13.16 (0.04) | 13.16 (0.04) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 12.38 (0.003) | 12.40 (0.0004) | 12.38 (0.003) | ||
| BP magnitude | 12.24 (0.003) | 12.19 (0.007) | |||
| RP magnitude | 12.67 (0.004) | 12.66 (0.001) | |||
| Pan g magnitude | 12.14 | ||||
| Pan r magnitude | 12.61 | ||||
| Pan i magnitude | 12.98 | ||||
| Pan z magnitude | 13.28 (0.002) | ||||
| Pan y magnitude | 13.47 (0.003) | ||||
| E(B-V) | 0.019 | ||||
* 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.