All names: GALEX J223824.9+170457, Gaia EDR3 2736748007050841856, Gaia DR3 2736748075770318720, Gaia DR2 2736748075770318720, SDSS J223824.93+170456.6
| Parameter | Unit | Gaia EDR3 | Simbad |
|---|---|---|---|
| Right ascension | 22 38 19.16 (0.5) | 22 38 24.95 (1) | |
| Declination | 17 04 37.96 (0.5) | 17 04 56.75 (1) | |
| Spectral type | D+? | ||
| 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] | 7.53 (0.5) | |
| Distance | [pc] | 132.86 (1e+01) | |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -63.216 (0.8) | -16.856 (2) |
| Proper motion (declination) | [mas/yr] | -116.335 (0.5) | -17.667 (1) |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | |||
| V magnitude | |||
| R magnitude | |||
| I magnitude | |||
| J magnitude | |||
| H magnitude | |||
| K magnitude | |||
| u magnitude | 21.01 (0.1) | ||
| g magnitude | 20.57 (0.02) | ||
| r magnitude | 20.66 (0.04) | ||
| i magnitude | 20.41 (0.04) | ||
| z magnitude | 19.83 (0.1) | ||
| G magnitude | 19.73 (0.005) | 20.43 (0.01) | |
| BP magnitude | 20.08 (0.06) | ||
| RP magnitude | 19.29 (0.05) | ||
| Pan g magnitude | |||
| Pan r magnitude | |||
| Pan i magnitude | |||
| Pan z magnitude | |||
| Pan y magnitude | |||
| E(B-V) | |||
* 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.