All names: Gaia DR2 1889361271768667648, SDSSJ225042.74+304751.6, 2MASS J22504274+3047516, TIC 188871607, Gaia DR3 1889361271768667648, SDSS J225042.74+304751.6
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 50 42.74 | 22 50 42.74 (0.03) | ||
| Declination | 30 47 51.68 | 30 47 51.66 (0.03) | ||
| 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] | 0.09 (0.06) | 0.01 (0.04) | |
| Distance | [pc] | 11248.59 (7124) | 114942.53 (527150) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.191 (0.09) | 2.328 (0.04) | |
| Proper motion (declination) | [mas/yr] | -1.884 (0.08) | -1.681 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.88 (0.07) | 15.88 (0.07) | ||
| H magnitude | 16.05 (0.2) | 16.05 (0.2) | ||
| K magnitude | 15.52 | |||
| u magnitude | 14.90 (0.004) | 14.90 (0.004) | ||
| g magnitude | 15.18 (0.004) | 15.18 (0.004) | ||
| r magnitude | 15.64 (0.004) | 15.64 (0.004) | ||
| i magnitude | 15.94 (0.004) | 15.94 (0.004) | ||
| z magnitude | 16.21 (0.008) | 16.21 (0.008) | ||
| G magnitude | 15.43 (0.0006) | 15.42 (0.003) | ||
| BP magnitude | 15.24 (0.005) | |||
| RP magnitude | 15.63 (0.002) | |||
| Pan g magnitude | 15.29 (0.004) | |||
| Pan r magnitude | 15.66 (0.003) | |||
| Pan i magnitude | 15.97 (0.002) | |||
| Pan z magnitude | 16.20 (0.005) | |||
| Pan y magnitude | 16.37 (0.006) | |||
| E(B-V) | 0.063 | |||
* 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.