All names: [TFW97] J155756.34+301125.48, PG1555+303, Gaia EDR3 1320499794080097920, SDSS J155756.34+301125.5, Gaia DR3 1320499794080097920, 2MASS J15575635+3011256, Gaia DR2 1320499794080097920, TIC 188584606, PG 1555+303
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 15 57 56.35 (0.02) | 15 57 56.32 | 15 57 56.35 (0.02) | ||
| Declination | 30 11 25.59 (0.02) | 30 11 25.73 | 30 11 25.57 (0.02) | ||
| Spectral type | sdB | sdB | |||
| 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] | 1.09 (0.03) | 1.11 (0.04) | 1.09 (0.03) | |
| Distance | [pc] | 919.46 (26) | 899.36 (31) | 919.46 (26) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 4.148 (0.03) | 4.118 (0.05) | 4.148 (0.03) | |
| Proper motion (declination) | [mas/yr] | 1.236 (0.04) | 1.047 (0.07) | 1.236 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.79 | ||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.45 (0.05) | 15.45 (0.05) | |||
| H magnitude | 15.44 (0.1) | 15.44 (0.1) | |||
| K magnitude | 15.64 (0.2) | 15.64 (0.2) | |||
| u magnitude | 14.25 (0.004) | 14.26 (0.02) | |||
| g magnitude | 14.46 (0.004) | 14.48 (0.01) | |||
| r magnitude | 14.97 (0.004) | 14.97 (0.01) | |||
| i magnitude | 15.30 (0.004) | 15.29 (0.02) | |||
| z magnitude | 15.65 (0.006) | 15.64 (0.02) | |||
| G magnitude | 14.71 (0.003) | 14.73 (0.0005) | 14.71 (0.003) | ||
| BP magnitude | 14.57 (0.003) | 14.51 (0.007) | |||
| RP magnitude | 14.99 (0.004) | 14.99 (0.002) | |||
| Pan g magnitude | 14.53 (0.002) | ||||
| Pan r magnitude | 14.96 (0.004) | ||||
| Pan i magnitude | 15.33 (0.001) | ||||
| Pan z magnitude | 15.60 (0.002) | ||||
| Pan y magnitude | 15.79 (0.007) | ||||
| E(B-V) | 0.026 | ||||
* 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.