All names: Gaia DR3 3685172413454924544, PG 1257-026, [HMD92] 862-4, UCAC4 436-057115, SDSS J130013.83-024952.6, PG1257-026, 2MASS J13001382-0249525, GALEX J130013.8-024952, LAMOST J130013.83-024952.5, Gaia DR2 3685172413454924544, TIC 175740559, FBS 1257-026
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 13 00 13.82 | 13 00 13.83 (0.02) | ||
| Declination | -02 49 52.28 | -02 49 52.57 (0.01) | ||
| Spectral type | sdB+MS | sdB+F8V | ||
| 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] | 0.60 (0.05) | 0.70 (0.03) | |
| Distance | [pc] | 1655.63 (146) | 1423.49 (51) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.336 (0.08) | -0.381 (0.03) | |
| Proper motion (declination) | [mas/yr] | -3.54 (0.04) | -3.572 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.19 (0.03) | |||
| V magnitude | 14.04 (0.02) | |||
| R magnitude | 14.19 (0.1) | |||
| I magnitude | ||||
| J magnitude | 13.53 (0.02) | 13.53 (0.02) | ||
| H magnitude | 13.32 (0.03) | 13.32 (0.03) | ||
| K magnitude | 13.26 (0.03) | 13.26 (0.03) | ||
| u magnitude | 14.31 (0.003) | 14.31 (0.003) | ||
| g magnitude | 13.99 (0.003) | 14.05 (0.02) | ||
| r magnitude | 14.04 (0.003) | 14.08 (0.02) | ||
| i magnitude | 14.05 (0.004) | 14.13 (0.02) | ||
| z magnitude | 14.16 (0.004) | 14.16 (0.004) | ||
| G magnitude | 13.98 (0.0004) | 13.96 (0.003) | ||
| BP magnitude | 14.04 (0.004) | |||
| RP magnitude | 13.78 (0.001) | |||
| Pan g magnitude | 14.05 (0.001) | |||
| Pan r magnitude | 14.06 (0.002) | |||
| Pan i magnitude | 14.13 (0.006) | |||
| Pan z magnitude | 14.19 (0.004) | |||
| Pan y magnitude | 14.22 (0.002) | |||
| 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.