All names: Gaia DR3 290873052349591680, Gaia DR2 290873052349591680, Gaia EDR3 290873052349591680, SDSS J013847.89+232918.4, SDSS J013847.90+232918.4, GALEX J013847.8+232918
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Simbad | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|
| Right ascension | 01 38 47.90 (4) | 01 38 47.90 | 01 38 47.90 (2) | 01 38 47.90 (4) | 01 38 47.90 | |
| Declination | 23 29 18.32 (5) | 23 29 18.33 | 23 29 18.32 (2) | 23 29 18.32 (5) | 23 29 18.41 | |
| Spectral type | DA | DA | ||||
| Effective temperature | [K] | 31939.0 (1235) | ||||
| log(g) | [cgs] | 9.88 (0.1) | ||||
| Mass | [M☉] | 1.361 (0.01) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | |||||
| Distance | [pc] | |||||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | |||||
| Proper motion (declination) | [mas/yr] | |||||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | 20.38 (0.05) | 20.37 (0.05) | 20.37 (0.05) | |||
| g magnitude | 20.66 (0.02) | 20.65 (0.03) | 20.65 (0.03) | |||
| r magnitude | 20.96 (0.04) | 20.95 (0.04) | 20.95 (0.04) | |||
| i magnitude | 21.39 (0.08) | 21.35 (0.08) | 21.35 (0.08) | |||
| z magnitude | 21.39 (0.3) | 21.44 (0.3) | 21.44 (0.3) | |||
| G magnitude | 20.79 (0.2) | 20.90 | 20.79 (0.02) | |||
| BP magnitude | 20.76 (0.2) | 20.46 | ||||
| RP magnitude | 20.53 (0.2) | 20.71 | ||||
| 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.