All names: WISEA J234408.44+184250.2, UCAC4 544-146974, Gaia DR3 2822672611674887296, PG 2341+184, Gaia DR2 2822672611674887296, TIC 113543822, 2MASS J23440845+1842503, WISE J234408.44+184250.3, PG2341+184, GALEX J234408.4+184250, SDSS J234408.44+184250.2
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 23 44 08.46 | 23 44 08.45 (0.04) | ||
| Declination | 18 42 50.51 | 18 42 50.25 (0.03) | ||
| Spectral type | sdB | sdB | ||
| 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] | 0.61 (0.08) | 0.62 (0.05) | |
| Distance | [pc] | 1645.28 (205) | 1619.96 (121) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.905 (0.2) | -4.833 (0.05) | |
| Proper motion (declination) | [mas/yr] | -2.513 (0.07) | -2.586 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.74 (0.03) | |||
| V magnitude | 15.88 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.85 (0.07) | 15.85 (0.07) | ||
| H magnitude | 15.92 (0.1) | 15.92 (0.1) | ||
| K magnitude | 15.66 (0.2) | 15.66 (0.2) | ||
| u magnitude | 15.65 (0.005) | |||
| g magnitude | 15.67 (0.003) | 15.66 (0.01) | ||
| r magnitude | 15.97 (0.004) | 16.00 (0.01) | ||
| i magnitude | 16.17 (0.005) | 16.04 (0.01) | ||
| z magnitude | 16.35 (0.008) | |||
| G magnitude | 15.80 (0.0006) | 15.78 (0.003) | ||
| BP magnitude | 15.70 (0.005) | |||
| RP magnitude | 15.86 (0.003) | |||
| Pan g magnitude | 15.70 (0.003) | |||
| Pan r magnitude | 15.96 (0.003) | |||
| Pan i magnitude | 16.20 (0.004) | |||
| Pan z magnitude | 16.36 (0.005) | |||
| Pan y magnitude | 16.48 (0.008) | |||
| E(B-V) | 0.045 | |||
* 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.