All names: PG 1255+547, LAMOST J125749.31+542535.3, SBSS 1255+546, Gaia DR2 1570270249924113408, WISE J125749.26+542535.6, HIDDEN NAME PG 1255+546, SDSS J125749.30+542535.4, UCAC4 723-052784, 2MASS J12574931+5425354, PG1255+546, TIC 371833573, Gaia DR3 1570270249924113408, WISEA J125749.26+542535.5, Gaia EDR3 1570270249924113408
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 57 49.24 (0.02) | 12 57 49.55 | 12 57 49.31 (0.02) | ||
| Declination | 54 25 35.50 (0.02) | 54 25 35.00 | 54 25 35.39 (0.02) | ||
| Spectral type | sdB | sdB0.5VIIHe11 | |||
| Effective temperature | [K] | 33400.0 (1000) | |||
| log(g) | [cgs] | 5.81 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.59 (0.03) | 1.56 (0.04) | 1.59 (0.03) | |
| Distance | [pc] | 629.05 (12) | 641.56 (18) | 629.05 (12) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -40.293 (0.03) | -40.233 (0.06) | -40.293 (0.03) | |
| Proper motion (declination) | [mas/yr] | 6.957 (0.03) | 7.078 (0.06) | 6.957 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.24 (0.06) | ||||
| V magnitude | 13.47 (0.02) | ||||
| R magnitude | 13.71 (0.06) | ||||
| I magnitude | |||||
| J magnitude | 14.18 (0.03) | 14.18 (0.03) | |||
| H magnitude | 14.38 (0.05) | 14.38 (0.05) | |||
| K magnitude | 14.42 (0.07) | 14.42 (0.07) | |||
| u magnitude | 13.11 (0.004) | ||||
| g magnitude | 13.49 (0.004) | ||||
| r magnitude | |||||
| i magnitude | 14.24 (0.004) | ||||
| z magnitude | 14.51 (0.005) | ||||
| G magnitude | 13.48 (0.003) | 13.50 (0.0007) | 13.48 (0.003) | ||
| BP magnitude | 13.32 (0.003) | 13.27 (0.008) | |||
| RP magnitude | 13.79 (0.004) | 13.78 (0.002) | |||
| Pan g magnitude | 13.48 | ||||
| Pan r magnitude | 13.76 (0.002) | ||||
| Pan i magnitude | 14.14 (0.004) | ||||
| Pan z magnitude | 14.42 (0.002) | ||||
| Pan y magnitude | 14.60 (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.