All names: HS 2209+2840, UCAC2 41985587, Gaia DR3 1894911640824988288, TIC 27864617, GALEX J221203.8+285515, UCAC4 595-133041, Gaia EDR3 1894911640824988288, Gaia DR2 1894911640824988288, HS2209+2840, 2MASS J22120394+2855151
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 22 12 03.93 (0.03) | 22 12 03.96 | 22 12 03.93 (0.03) | ||
| Declination | 28 55 15.21 (0.04) | 28 55 15.70 | 28 55 15.28 (0.04) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 31300.0 (800) | |||
| log(g) | [cgs] | 5.80 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.65 (0.05) | 0.59 (0.09) | 0.65 (0.05) | |
| Distance | [pc] | 1546.79 (112) | 1693.48 (244) | 1546.79 (112) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.447 (0.05) | -1.269 (0.1) | -1.447 (0.05) | |
| Proper motion (declination) | [mas/yr] | -4.341 (0.05) | -4.326 (0.1) | -4.341 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.72 (0.03) | ||||
| V magnitude | 15.87 (0.1) | ||||
| R magnitude | 16.29 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 16.66 (0.2) | 16.66 (0.1) | |||
| H magnitude | 17.54 | ||||
| K magnitude | 16.32 | ||||
| u magnitude | 15.46 (0.004) | ||||
| g magnitude | 15.64 (0.003) | 15.68 (0.03) | |||
| r magnitude | 16.09 (0.004) | 16.05 (0.08) | |||
| i magnitude | 16.41 (0.005) | ||||
| z magnitude | 16.71 (0.01) | ||||
| G magnitude | 15.87 (0.003) | 15.89 (0.001) | 15.87 (0.003) | ||
| BP magnitude | 15.75 (0.003) | 15.72 (0.007) | |||
| RP magnitude | 16.11 (0.006) | 16.11 (0.004) | |||
| Pan g magnitude | 15.71 (0.003) | ||||
| Pan r magnitude | 16.10 (0.002) | ||||
| Pan i magnitude | 16.45 (0.003) | ||||
| Pan z magnitude | 16.70 (0.003) | ||||
| Pan y magnitude | 16.85 (0.01) | ||||
| E(B-V) | 0.066 | ||||
* 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.