All names: Gaia DR2 552891694067107328, FBS 0430+772, Gaia DR3 552891689770014080, TIC 331553315, Gaia DR3 552891694067107328, GALEX J043712.4+771807, HS0430+7712, Gaia EDR3 552891689770014080, 2MASS J04371224+7718079, FBS B 943, HS 0430+7712
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 04 37 08.32 (0.2) | 04 37 12.22 | 04 37 08.32 | 04 37 12.27 (0.02) | ||
| Declination | 77 17 32.05 (0.2) | 77 18 08.66 | 77 17 32.05 | 77 18 08.01 (0.02) | ||
| Spectral type | sdB | DA | sdB | |||
| Effective temperature | [K] | 26800.0 (700) | 8623.0 (482) | |||
| log(g) | [cgs] | 5.40 (0.1) | 8.38 (0.1) | |||
| Mass | [M☉] | 0.842 (0.09) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 5.57 (0.3) | 1.41 (0.05) | 5.57 | 1.40 (0.02) | |
| Distance | [pc] | 179.46 (9) | 708.77 (26) | 179.46 | 714.59 (12) | |
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 30.731 (0.3) | 2.873 (0.06) | 2.961 (0.02) | ||
| Proper motion (declination) | [mas/yr] | -22.831 (0.3) | -15.8 (0.07) | -15.847 (0.03) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | 14.06 (0.03) | 14.06 (0.03) | ||||
| H magnitude | 14.15 (0.06) | 14.15 (0.06) | ||||
| K magnitude | 14.09 (0.06) | 14.09 (0.06) | ||||
| u magnitude | ||||||
| g magnitude | ||||||
| r magnitude | ||||||
| i magnitude | ||||||
| z magnitude | ||||||
| G magnitude | 19.57 (0.004) | 13.73 (0.0005) | 19.57 | 13.71 (0.003) | ||
| BP magnitude | 19.80 (0.05) | 13.62 (0.005) | ||||
| RP magnitude | 19.37 (0.05) | 13.84 (0.001) | ||||
| Pan g magnitude | 13.62 (0.005) | |||||
| Pan r magnitude | 13.90 (0.003) | |||||
| Pan i magnitude | 14.18 (0.004) | |||||
| Pan z magnitude | 14.40 (0.004) | |||||
| Pan y magnitude | 14.52 (0.007) | |||||
| E(B-V) | 0.100 | |||||
* 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.