All names: GALEX J182359.7+515525, O11J182400+515525, Gaia DR2 2148297393980910848, 2MASS J18235958+5155270, WISE J182359.52+515526.7, TIC 21179525, Gaia DR3 2148297393980910848, UCAC4 710-060479, GALEX J182359.6+515525
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 18 24 00.00 | 18 23 59.61 (0.03) | ||
| Declination | 51 55 25.00 | 51 55 26.99 (0.03) | ||
| Spectral type | sd | |||
| 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] | 0.25 (0.05) | 0.28 (0.03) | |
| Distance | [pc] | 4056.80 (826) | 3567.61 (440) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -12.269 (0.1) | -12.257 (0.04) | |
| Proper motion (declination) | [mas/yr] | -15.427 (0.08) | -15.395 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.64 (0.09) | |||
| V magnitude | 15.85 (0.07) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.25 (0.1) | 16.25 (0.1) | ||
| H magnitude | 16.08 (0.2) | 16.08 (0.2) | ||
| K magnitude | 15.94 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | 16.04 (0.2) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.81 (0.001) | 15.80 (0.003) | ||
| BP magnitude | 15.60 (0.006) | |||
| RP magnitude | 16.05 (0.005) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | 21.38 (0.1) | |||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.032 | |||
* 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.