All names: UCAC2 40213588, GALEXJ18237+2330, Gaia DR3 4530301237195101696, WISEA J182344.12+233054.7, Gaia DR2 4530301237195101696, UCAC4 568-067073, WISE J182344.13+233054.8, 2MASS J18234413+2330550, TIC 342316366
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 18 23 44.17 | 18 23 44.14 (0.01) | ||
| Declination | 23 30 53.99 | 23 30 55.00 (0.02) | ||
| Spectral type | sdOB | sdOB | ||
| 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] | 1.72 (0.04) | 1.75 (0.02) | |
| Distance | [pc] | 582.04 (13) | 572.51 (8) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -17.472 (0.04) | -17.494 (0.02) | |
| Proper motion (declination) | [mas/yr] | -20.299 (0.06) | -20.205 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | 13.83 (0.07) | |||
| I magnitude | ||||
| J magnitude | 14.13 (0.04) | 14.13 (0.04) | ||
| H magnitude | 14.17 (0.05) | 14.17 (0.05) | ||
| K magnitude | 14.38 (0.06) | 14.38 (0.06) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 13.60 (0.0003) | 13.58 (0.003) | ||
| BP magnitude | 13.41 (0.006) | |||
| RP magnitude | 13.81 (0.001) | |||
| Pan g magnitude | 14.29 (0.02) | |||
| Pan r magnitude | 15.01 (0.02) | |||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.083 | |||
* 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.