All names: FBS 2307+338, Gaia DR3 1911572540520290048, TIC 306074867, 2MASS J23101395+3401562, LAMOST J231013.94+340156.2, FBS B 630, GALEX J231013.8+340155, SDSS J231013.94+340156.1, FBS2307+338, Gaia DR2 1911572540520290048
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 23 10 13.87 | 23 10 13.94 (0.03) | ||
| Declination | 34 01 58.20 | 34 01 56.13 (0.03) | ||
| Spectral type | He-sdO | sdB | ||
| Effective temperature | [K] | 49490.0 (830) | ||
| log(g) | [cgs] | 5.62 (0.08) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.47 (0.08) | 0.48 (0.05) | |
| Distance | [pc] | 2140.41 (378) | 2069.96 (215) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.262 (0.1) | -2.083 (0.05) | |
| Proper motion (declination) | [mas/yr] | -0.537 (0.1) | -0.576 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.98 (0.08) | 15.98 (0.08) | ||
| H magnitude | 15.95 (0.1) | 15.95 (0.1) | ||
| K magnitude | 15.30 | |||
| u magnitude | 14.83 (0.004) | 14.83 (0.004) | ||
| g magnitude | 15.19 (0.003) | 15.19 (0.003) | ||
| r magnitude | 15.65 (0.003) | 15.65 (0.003) | ||
| i magnitude | 15.98 (0.004) | 15.98 (0.004) | ||
| z magnitude | 16.27 (0.008) | 16.27 (0.008) | ||
| G magnitude | 15.44 (0.0008) | 15.42 (0.003) | ||
| BP magnitude | 15.23 (0.007) | |||
| RP magnitude | 15.66 (0.003) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | 19.54 (0.07) | |||
| Pan z magnitude | 20.69 (0.2) | |||
| Pan y magnitude | ||||
| E(B-V) | 0.080 | |||
* 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.