All names: TIC 272818503, UCAC2 32216056, PG 1551+015, FBS 1551+015, UCAC4 457-056356, 2MASS J15542519+0121095, PG1551+015, LAMOST J155425.18+012109.6, Gaia DR2 4411061675059759872, GALEX J155425.1+012108, Gaia DR3 4411061675059759872
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 15 54 25.18 | 15 54 25.19 (0.03) | ||
| Declination | 01 21 09.86 | 01 21 09.60 (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] | 0.49 (0.05) | 0.39 (0.04) | |
| Distance | [pc] | 2040.40 (198) | 2586.65 (240) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.948 (0.1) | -2.97 (0.04) | |
| Proper motion (declination) | [mas/yr] | -2.937 (0.07) | -2.874 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.62 (0.04) | |||
| V magnitude | 15.49 (0.02) | |||
| R magnitude | 15.68 (0.2) | |||
| I magnitude | ||||
| J magnitude | 14.82 (0.04) | 14.82 (0.04) | ||
| H magnitude | 14.61 (0.04) | 14.61 (0.04) | ||
| K magnitude | 14.49 (0.09) | 14.49 (0.09) | ||
| u magnitude | 15.75 (0.005) | |||
| g magnitude | 15.42 (0.004) | |||
| r magnitude | 15.43 (0.005) | |||
| i magnitude | 15.46 (0.005) | |||
| z magnitude | 15.32 (0.006) | |||
| G magnitude | 15.36 (0.0004) | 15.34 (0.003) | ||
| BP magnitude | 15.43 (0.004) | |||
| RP magnitude | 15.13 (0.003) | |||
| Pan g magnitude | 15.44 (0.001) | |||
| Pan r magnitude | 15.44 (0.002) | |||
| Pan i magnitude | 15.48 (0.001) | |||
| Pan z magnitude | 15.52 (0.005) | |||
| Pan y magnitude | 15.54 (0.006) | |||
| E(B-V) | 0.077 | |||
* 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.