All names: 2MASS J15510360+4727289, PG 1549+476, Gaia DR3 1398287767843592192, GALEX J155103.6+472729, Gaia DR2 1398287767843592192, Gaia EDR3 1398287767843592192, SDSS J155103.59+472729.1, TIC 156082905, PG1549+476, SDSS J155103.58+472729.2
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 15 51 03.59 (0.04) | 15 51 03.58 | 15 51 03.59 (0.04) | ||
| Declination | 47 27 29.05 (0.04) | 47 27 29.75 | 47 27 29.23 (0.04) | ||
| 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] | 0.53 (0.04) | 0.43 (0.05) | 0.53 (0.04) | |
| Distance | [pc] | 1888.93 (152) | 2338.63 (257) | 1888.93 (152) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 1.852 (0.05) | 2.117 (0.08) | 1.852 (0.05) | |
| Proper motion (declination) | [mas/yr] | -11.5 (0.05) | -11.151 (0.09) | -11.5 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.89 | ||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.34 (0.1) | 16.34 (0.1) | |||
| H magnitude | 15.94 (0.2) | 15.94 (0.2) | |||
| K magnitude | 16.06 | ||||
| u magnitude | 15.63 (0.005) | 15.62 (0.005) | |||
| g magnitude | 15.71 (0.004) | 15.71 (0.004) | |||
| r magnitude | 16.14 (0.005) | 16.15 (0.005) | |||
| i magnitude | 16.45 (0.006) | 16.45 (0.006) | |||
| z magnitude | 16.71 (0.01) | 16.70 (0.01) | |||
| G magnitude | 15.93 (0.003) | 15.95 (0.002) | 15.93 (0.003) | ||
| BP magnitude | 15.82 (0.004) | 15.75 (0.01) | |||
| RP magnitude | 16.15 (0.006) | 16.14 (0.005) | |||
| Pan g magnitude | 15.76 (0.005) | ||||
| Pan r magnitude | 16.16 (0.003) | ||||
| Pan i magnitude | 16.47 (0.002) | ||||
| Pan z magnitude | 16.70 (0.003) | ||||
| Pan y magnitude | 16.85 (0.008) | ||||
| 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.