All names: [TFW97] J155537.86+270648.69, LAMOST J155537.94+270648.6, SDSS J155537.85+270648.4, PG 1553+273, GALEX J155537.9+270648, LAMOST J155537.86+270648.4, Gaia DR3 1220472582737099776, Balloon 83000001, 2MASS J15553785+2706485, Gaia DR2 1220472582737099776, PG1553+272, HIDDEN NAME PG 1553+272, TIC 258109545
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 15 55 37.90 | 15 55 37.86 (0.01) | ||
| Declination | 27 06 49.83 | 27 06 48.46 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 22100.0 (900) | ||
| log(g) | [cgs] | 4.74 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.73 (0.04) | 0.77 (0.03) | |
| Distance | [pc] | 1368.18 (83) | 1304.29 (44) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -11.533 (0.06) | -11.501 (0.02) | |
| Proper motion (declination) | [mas/yr] | -20.787 (0.07) | -20.644 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.53 | |||
| V magnitude | 13.53 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 13.99 (0.03) | 13.99 (0.03) | ||
| H magnitude | 14.03 (0.04) | 14.03 (0.04) | ||
| K magnitude | 14.06 (0.07) | 14.06 (0.07) | ||
| u magnitude | 13.53 (0.004) | 13.53 (0.004) | ||
| g magnitude | 14.91 (0.01) | |||
| r magnitude | 13.84 (0.006) | 13.84 (0.006) | ||
| i magnitude | 14.08 (0.004) | 14.08 (0.004) | ||
| z magnitude | 14.33 (0.004) | 14.33 (0.004) | ||
| G magnitude | 13.57 (0.001) | 13.55 (0.003) | ||
| BP magnitude | 13.42 (0.007) | |||
| RP magnitude | 13.72 (0.004) | |||
| Pan g magnitude | 15.72 (0.003) | |||
| Pan r magnitude | 17.87 (0.02) | |||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.035 | |||
* 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.