All names: Gaia DR2 1212519402815251840, SDSS J151838.80+201947.1, PG1516+205, PG 1516+205, Gaia DR3 1212519402815495680, GALEX J151838.8+201947, 2MASS J15183880+2019472, TIC 355741981
| Parameter | Unit | Geier 2020 | Simbad |
|---|---|---|---|
| Right ascension | 15 18 38.80 | 15 18 38.81 (0.9) | |
| Declination | 20 19 48.39 | 20 19 46.72 (1) | |
| 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] | ||
| Distance | [pc] | ||
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | ||
| Proper motion (declination) | [mas/yr] | ||
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | 15.16 | ||
| V magnitude | |||
| R magnitude | |||
| I magnitude | |||
| J magnitude | 14.02 (0.03) | 14.02 (0.03) | |
| H magnitude | 13.75 (0.03) | 13.75 (0.03) | |
| K magnitude | 13.68 (0.04) | 13.68 (0.04) | |
| u magnitude | 14.76 (0.004) | 14.76 (0.004) | |
| g magnitude | 14.59 (0.003) | 14.59 (0.003) | |
| r magnitude | 14.65 (0.004) | 14.65 (0.004) | |
| i magnitude | 14.71 (0.004) | 14.71 (0.004) | |
| z magnitude | 14.77 (0.005) | 14.77 (0.005) | |
| G magnitude | 14.71 (0.008) | 15.17 (0.008) | |
| BP magnitude | 14.63 (0.006) | ||
| RP magnitude | 14.40 (0.001) | ||
| Pan g magnitude | 14.66 (0.004) | ||
| Pan r magnitude | 14.72 (0.008) | ||
| Pan i magnitude | 14.77 (0.003) | ||
| Pan z magnitude | 14.84 (0.004) | ||
| Pan y magnitude | 14.84 (0.005) | ||
| E(B-V) | |||
* 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.