All names: SDSS J093043.76+304347.1, Gaia DR2 697402259652021888, Gaia EDR3 697402259652021888, Gaia DR3 697402259652021888, GALEX J093043.7+304347, USNO-A2.0 1200-06325945, LAMOST J093043.76+304347.1
| Parameter | Unit | Gaia EDR3 | Stilism | Guo et al. 2015 | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 09 30 43.73 (0.1) | 09 30 43.73 | 09 30 43.78 (0.1) | |||
| Declination | 30 43 46.78 (0.09) | 30 43 46.78 | 30 43 47.19 (0.09) | |||
| Spectral type | DA | DA | DA | |||
| Effective temperature | [K] | 11434.0 (297) | ||||
| log(g) | [cgs] | 7.87 (0.05) | ||||
| Mass | [M☉] | 0.532 (0.04) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 4.64 (0.2) | 4.64 | 4.64 (0.2) | ||
| Distance | [pc] | 215.72 (8) | 215.72 | 215.72 (8) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -43.621 (0.2) | -43.621 (0.2) | |||
| Proper motion (declination) | [mas/yr] | -26.038 (0.1) | -26.038 (0.1) | |||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 17.80 (0.3) | |||||
| V magnitude | ||||||
| R magnitude | 18.20 (0.3) | |||||
| I magnitude | ||||||
| J magnitude | 18.46 (0.04) | |||||
| H magnitude | 18.20 (0.1) | |||||
| K magnitude | ||||||
| u magnitude | 18.66 (0.02) | |||||
| g magnitude | 18.23 (0.007) | |||||
| r magnitude | 18.38 (0.008) | |||||
| i magnitude | 18.55 (0.01) | |||||
| z magnitude | 18.81 (0.04) | |||||
| G magnitude | 18.29 (0.003) | 18.29 | 18.29 (0.003) | |||
| BP magnitude | 18.30 (0.01) | |||||
| RP magnitude | 18.31 (0.02) | |||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.012 | |||||
* 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.