All names: GALEX J235515.4+170829, SDSS J235515.47+170830.9, USNO-B1.0 1071-00716415, Gaia DR3 2773334982315549824, Gaia DR2 2773334982315549824, UCAC4 536-151385, ** GWP 3371A, WDS J23553+1709A, UCAC3 215-334670
| Parameter | Unit | Stilism | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|
| Right ascension | 23 55 15.50 | 23 55 15.44 (0.05) | ||
| Declination | 17 08 31.07 | 17 08 30.99 (0.04) | ||
| Spectral type | DB | DB | ||
| Effective temperature | [K] | 22814.0 (1146) | ||
| log(g) | [cgs] | 8.10 (0.02) | ||
| Mass | [M☉] | 0.662 (0.01) | ||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 7.06 | 7.06 (0.07) | |
| Distance | [pc] | 141.71 | 141.71 (1) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 55.901 (0.07) | ||
| Proper motion (declination) | [mas/yr] | 5.156 (0.04) | ||
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.50 | |||
| V magnitude | ||||
| R magnitude | 16.40 | |||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 16.09 (0.006) | |||
| g magnitude | 16.22 (0.004) | |||
| r magnitude | 16.59 (0.005) | |||
| i magnitude | 16.90 (0.005) | |||
| z magnitude | 17.18 (0.01) | |||
| G magnitude | 16.41 | 16.41 (0.003) | ||
| BP magnitude | ||||
| RP magnitude | ||||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.011 | |||
* 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.