All names: SDSSJ083917.97+103753.3, Gaia DR2 601444306482580992, SDSS J083917.97+103753.3, UCAC4 504-048309, Gaia DR3 601444306482580992, Gaia EDR3 601444306482580992, GALEX J083918.0+103753, LAMOST J083917.97+103753.3
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 08 39 17.97 (0.04) | 08 39 17.98 | 08 39 17.98 (0.04) | ||
| Declination | 10 37 53.38 (0.02) | 10 37 53.32 | 10 37 53.34 (0.02) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 27581.0 (194) | |||
| log(g) | [cgs] | 5.56 (0.03) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.69 (0.05) | 0.65 (0.08) | 0.69 (0.05) | |
| Distance | [pc] | 1459.21 (107) | 1534.45 (177) | 1459.21 (107) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -6.281 (0.05) | -6.312 (0.1) | -6.281 (0.05) | |
| Proper motion (declination) | [mas/yr] | 2.951 (0.04) | 3.113 (0.07) | 2.951 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.10 (0.06) | ||||
| V magnitude | 15.20 (0.05) | ||||
| R magnitude | 15.54 (0.2) | ||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 14.81 (0.003) | 14.91 (0.02) | |||
| g magnitude | 14.90 (0.002) | 15.04 (0.04) | |||
| r magnitude | 15.36 (0.003) | 15.43 (0.03) | |||
| i magnitude | 15.66 (0.003) | 15.67 (0.01) | |||
| z magnitude | 15.98 (0.007) | 16.02 (0.02) | |||
| G magnitude | 15.17 (0.003) | 15.18 (0.0006) | 15.17 (0.003) | ||
| BP magnitude | 15.04 (0.003) | 15.00 (0.007) | |||
| RP magnitude | 15.40 (0.004) | 15.40 (0.003) | |||
| Pan g magnitude | 15.00 (0.002) | ||||
| Pan r magnitude | 15.40 (0.007) | ||||
| Pan i magnitude | 15.74 (0.003) | ||||
| Pan z magnitude | 15.99 (0.005) | ||||
| Pan y magnitude | 16.17 (0.008) | ||||
| E(B-V) | 0.031 | ||||
* 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.