All names: Gaia DR3 868762345136010880, Gaia DR2 868762345136010880, GALEX J074037.7+254109, SDSS J074037.67+254109.4, LAMOST J074037.67+254109.4, SDSS J074037.68+254109.4
| Parameter | Unit | Stilism | Guo et al. 2015 | Simbad |
|---|---|---|---|---|
| Right ascension | 07 40 37.67 (0.1) | |||
| Declination | 25 41 09.48 (0.09) | |||
| Spectral type | DC? | DC? | ||
| 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] | 0.28 (0.1) | ||
| Distance | [pc] | 3580.38 (1677) | ||
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.57 (0.1) | ||
| Proper motion (declination) | [mas/yr] | -6.44 (0.1) | ||
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 18.06 (0.01) | |||
| g magnitude | 17.75 (0.006) | |||
| r magnitude | 17.79 (0.006) | |||
| i magnitude | 17.86 (0.007) | |||
| z magnitude | 17.89 (0.02) | |||
| G magnitude | 17.69 (0.02) | |||
| BP magnitude | ||||
| RP magnitude | ||||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.036 | |||
* 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.