All names: TYC 1955-818-1, GALEX J092239.6+270224, LAMOST J092239.81+270225.2, SBC9 3325, uvby98 610070013, Gaia DR2 694109462844643072, 2MASS J09223983+2702254, GEN# +6.10070013, Gaia EDR3 694109462844643072, LAMOST J092239.83+270225.4, [TFW97] J092239.81+270225.64, TIC 149441063, UBV M 43098, PG 0919+273, Ton 13, FB 55, PG 0919+272, PG0919+272, Gaia DR3 694109462844643072, NPM1+27.0638, GSC 01955-00818
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Guo et al. 2015 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 09 22 39.86 (0.05) | 09 22 39.82 | 09 22 39.83 (0.05) | |||
| Declination | 27 02 24.99 (0.04) | 27 02 26.19 | 27 02 25.42 (0.04) | |||
| Spectral type | sdB | hot_subdwarf | sdB | |||
| Effective temperature | [K] | 33230.0 (240) | ||||
| log(g) | [cgs] | 6.00 (0.04) | ||||
| Mass | [M☉] | |||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 2.93 (0.07) | 2.93 (0.08) | 2.93 (0.07) | ||
| Distance | [pc] | 340.97 (8) | 341.61 (9) | 340.97 (8) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 23.466 (0.06) | 23.343 (0.1) | 23.466 (0.06) | ||
| Proper motion (declination) | [mas/yr] | -27.351 (0.05) | -27.557 (0.08) | -27.351 (0.05) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 12.27 | |||||
| V magnitude | 12.66 | |||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | 13.30 (0.02) | 13.30 (0.02) | ||||
| H magnitude | 13.42 (0.03) | 13.42 (0.03) | ||||
| K magnitude | 13.57 (0.04) | 13.57 (0.04) | ||||
| u magnitude | 14.09 (0.01) | |||||
| g magnitude | ||||||
| r magnitude | 12.98 (0.002) | |||||
| i magnitude | 13.36 (0.001) | |||||
| z magnitude | 13.88 (0.006) | |||||
| G magnitude | 12.59 (0.003) | 12.62 (0.0006) | 12.59 (0.003) | |||
| BP magnitude | 12.45 (0.003) | 12.39 (0.005) | ||||
| RP magnitude | 12.91 (0.004) | 12.91 (0.001) | ||||
| Pan g magnitude | 12.87 | |||||
| Pan r magnitude | 13.20 | |||||
| Pan i magnitude | 13.47 | |||||
| Pan z magnitude | 13.56 (0.003) | |||||
| Pan y magnitude | 13.71 (0.003) | |||||
| E(B-V) | 0.024 | |||||
* 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.