All names: GSC 09524-01917, TIC 404379108, Gaia DR3 6344690719475611264, EC21470-8407, DENIS J215519.0-835340, JL 88, Gaia DR2 6344690719475611264, 2MASS J21551914-8353409, EC 21470-8407
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 55 19.08 | 21 55 19.29 (0.04) | ||
| Declination | -83 53 40.56 | -83 53 40.89 (0.04) | ||
| Spectral type | He-sdO | sdOHe | ||
| 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] | 0.26 (0.05) | 0.25 (0.04) | |
| Distance | [pc] | 3874.47 (782) | 4014.45 (658) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 9.769 (0.09) | 9.62 (0.05) | |
| Proper motion (declination) | [mas/yr] | 6.004 (0.09) | 6.064 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.26 | |||
| V magnitude | 16.25 | |||
| R magnitude | ||||
| I magnitude | 16.52 (0.09) | |||
| J magnitude | 16.75 (0.2) | 16.75 (0.2) | ||
| H magnitude | 16.07 | |||
| K magnitude | 15.83 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.52 (0.002) | 16.49 (0.003) | ||
| BP magnitude | 16.30 (0.01) | |||
| RP magnitude | 16.66 (0.006) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.125 | |||
* 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.