All names: GALEX J222732.6+223610, HS2225+2220, SDSS J222732.67+223610.1, 2MASS J22273271+2236101, WISE J222732.64+223609.9, Gaia EDR3 1875278658119889408, UCAC4 564-130289, TIC 411300782, SDSS J222732.67+223610.2, WISEA J222732.64+223610.1, Gaia DR2 1875278658119889408, Gaia DR3 1875278658119889408, HS 2225+2220
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 22 27 32.67 (0.04) | 22 27 32.71 | 22 27 32.68 (0.04) | ||
| Declination | 22 36 10.16 (0.04) | 22 36 10.64 | 22 36 10.24 (0.04) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 31500.0 (800) | |||
| log(g) | [cgs] | 5.85 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.63 (0.06) | 0.62 (0.08) | 0.63 (0.06) | |
| Distance | [pc] | 1586.04 (148) | 1625.49 (220) | 1586.04 (148) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -12.564 (0.06) | -12.411 (0.1) | -12.564 (0.06) | |
| Proper motion (declination) | [mas/yr] | -4.949 (0.06) | -4.901 (0.1) | -4.949 (0.06) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.75 (0.08) | ||||
| V magnitude | 16.03 (0.07) | ||||
| R magnitude | 16.27 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 16.51 (0.1) | 16.51 (0.1) | |||
| H magnitude | 16.18 (0.2) | 16.18 (0.2) | |||
| K magnitude | 16.81 | ||||
| u magnitude | 15.51 (0.005) | 15.52 (0.005) | |||
| g magnitude | 15.73 (0.004) | 15.75 (0.004) | |||
| r magnitude | 16.19 (0.005) | 16.20 (0.005) | |||
| i magnitude | 16.52 (0.006) | 16.53 (0.006) | |||
| z magnitude | 16.79 (0.01) | 16.81 (0.01) | |||
| G magnitude | 15.94 (0.003) | 15.96 (0.001) | 15.94 (0.003) | ||
| BP magnitude | 15.82 (0.004) | 15.77 (0.007) | |||
| RP magnitude | 16.20 (0.005) | 16.20 (0.003) | |||
| Pan g magnitude | 15.79 (0.004) | ||||
| Pan r magnitude | 16.19 (0.002) | ||||
| Pan i magnitude | 16.53 (0.003) | ||||
| Pan z magnitude | 16.80 (0.006) | ||||
| Pan y magnitude | 16.97 (0.007) | ||||
| E(B-V) | 0.051 | ||||
* 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.