All names: SDSS J182356.81+412914.8, TIC 288754291, Gaia DR3 2111414615727863296, GALEX J182356.8+412913, 2MASS J18235680+4129146, O11J182356+412914, FBS B 394, Gaia DR2 2111414615727863296, Gaia EDR3 2111414615727863296, SDSS J182356.80+412914.6, FBS 1822+414
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 18 23 56.82 (0.03) | 18 23 56.80 | 18 23 56.80 (0.03) | ||
| Declination | 41 29 14.68 (0.03) | 41 29 14.60 | 41 29 14.61 (0.03) | ||
| Spectral type | sd | sdBO | |||
| 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] | 1.16 (0.03) | 1.10 (0.04) | 1.16 (0.03) | |
| Distance | [pc] | 864.98 (23) | 908.68 (30) | 864.98 (23) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 9.671 (0.04) | 9.716 (0.07) | 9.671 (0.04) | |
| Proper motion (declination) | [mas/yr] | 4.422 (0.04) | 4.513 (0.07) | 4.422 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.34 | ||||
| V magnitude | 14.76 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.16 (0.04) | 15.16 (0.04) | |||
| H magnitude | 15.29 (0.09) | 15.29 (0.09) | |||
| K magnitude | 15.64 | ||||
| u magnitude | 13.99 (0.003) | ||||
| g magnitude | 14.26 (0.003) | ||||
| r magnitude | 14.74 (0.003) | ||||
| i magnitude | 15.08 (0.004) | ||||
| z magnitude | 15.39 (0.006) | ||||
| G magnitude | 14.51 (0.003) | 14.53 (0.0006) | 14.51 (0.003) | ||
| BP magnitude | 14.38 (0.003) | 14.33 (0.007) | |||
| RP magnitude | 14.77 (0.004) | 14.77 (0.002) | |||
| Pan g magnitude | 14.34 (0.003) | ||||
| Pan r magnitude | 14.77 (0.004) | ||||
| Pan i magnitude | 15.10 (0.002) | ||||
| Pan z magnitude | 15.37 (0.003) | ||||
| Pan y magnitude | 15.55 (0.004) | ||||
| E(B-V) | 0.036 | ||||
* 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.