All names: UCAC4 535-054264, WISE J125941.48+164827.2, GALEX J125941.6+164827, UCAC2 37722936, PG1257+171, Gaia EDR3 3937582831077755648, Gaia DR3 3937582831077755648, TIC 88136935, SDSS J125941.46+164827.2, PG 1257+171, 2MASS J12594146+1648272, SDSS J125941.47+164827.2, Gaia DR2 3937582831077755648, WISEA J125941.46+164827.1
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 59 41.46 (0.03) | 12 59 41.48 | 12 59 41.47 (0.03) | ||
| Declination | 16 48 27.15 (0.02) | 16 48 27.47 | 16 48 27.22 (0.02) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 36830.0 (740) | |||
| log(g) | [cgs] | 5.95 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.35 (0.04) | 1.19 (0.07) | 1.35 (0.04) | |
| Distance | [pc] | 738.44 (24) | 840.62 (51) | 738.44 (24) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -5.514 (0.05) | -5.478 (0.1) | -5.514 (0.05) | |
| Proper motion (declination) | [mas/yr] | -4.138 (0.05) | -4.32 (0.08) | -4.138 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.10 (0.08) | ||||
| V magnitude | 14.27 (0.03) | ||||
| R magnitude | 14.73 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 14.84 (0.03) | 14.84 (0.03) | |||
| H magnitude | 14.98 (0.07) | 14.98 (0.07) | |||
| K magnitude | 15.16 (0.1) | 15.16 (0.1) | |||
| u magnitude | 13.70 (0.004) | ||||
| g magnitude | 14.27 (0.004) | 14.04 (0.09) | |||
| r magnitude | 14.61 (0.008) | 14.51 (0.01) | |||
| i magnitude | 14.79 (0.006) | 15.00 (0.09) | |||
| z magnitude | 15.15 (0.006) | ||||
| G magnitude | 14.22 (0.003) | 14.23 (0.0005) | 14.22 (0.003) | ||
| BP magnitude | 14.07 (0.003) | 14.00 (0.006) | |||
| RP magnitude | 14.50 (0.004) | 14.50 (0.002) | |||
| Pan g magnitude | 14.07 (0.003) | ||||
| Pan r magnitude | 14.49 (0.002) | ||||
| Pan i magnitude | 14.85 (0.004) | ||||
| Pan z magnitude | 15.12 (0.002) | ||||
| Pan y magnitude | 15.31 (0.005) | ||||
| 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.