All names: SDSS J080039.63+305537.8, LAMOST J080039.66+305537.3, LAMOST J080039.67+305537.3, Gaia DR2 877926744489706496, GALEX J080039.7+305537, Gaia DR3 877926744489706496, Gaia EDR3 877926744489706496
| Parameter | Unit | Gaia EDR3 | Stilism | Guo et al. 2015 | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 08 00 39.70 (0.09) | 08 00 39.70 | 08 00 39.63 (0.09) | |||
| Declination | 30 55 36.92 (0.07) | 30 55 36.92 | 30 55 37.96 (0.07) | |||
| Spectral type | DA | DA | DA | |||
| Effective temperature | [K] | 18254.0 (980) | ||||
| log(g) | [cgs] | 7.38 (0.06) | ||||
| Mass | [M☉] | 0.348 (0.03) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 3.01 (0.1) | 3.01 | 3.01 (0.1) | ||
| Distance | [pc] | 332.25 (12) | 332.25 | 332.25 (12) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 51.305 (0.1) | 51.305 (0.1) | |||
| Proper motion (declination) | [mas/yr] | -64.57 (0.08) | -64.57 (0.08) | |||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | 17.52 (0.01) | |||||
| g magnitude | 17.47 (0.005) | |||||
| r magnitude | 17.85 (0.007) | |||||
| i magnitude | 18.16 (0.009) | |||||
| z magnitude | 18.48 (0.03) | |||||
| G magnitude | 17.69 (0.003) | 17.69 | 17.69 (0.003) | |||
| BP magnitude | 17.61 (0.01) | |||||
| RP magnitude | 17.82 (0.02) | |||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.024 | |||||
* 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.