All names: Gaia EDR3 4006998569256355072, SDSS J120621.48+280631.1, Gaia DR3 4006998569256355072, Gaia DR2 4006998569256355072, GALEX J120621.5+280632, SDSS J120621.47+280631.2, SDSSJ120621.47+280631.2
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 06 21.47 (0.2) | 12 06 21.47 | 12 06 21.47 (0.2) | ||
| Declination | 28 06 31.19 (0.2) | 28 06 31.20 | 28 06 31.25 (0.2) | ||
| Spectral type | sdB | sdB | |||
| 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] | 0.42 (0.2) | 0.25 (0.4) | 0.42 (0.2) | |
| Distance | [pc] | 2392.92 (1381) | 3972.98 (5873) | 2392.92 (1381) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -5.026 (0.3) | -4.896 (0.6) | -5.026 (0.3) | |
| Proper motion (declination) | [mas/yr] | -3.412 (0.2) | -3.323 (0.4) | -3.412 (0.2) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 18.59 (0.02) | 18.59 (0.02) | |||
| g magnitude | 18.72 (0.008) | 18.72 (0.008) | |||
| r magnitude | 19.18 (0.01) | 19.18 (0.01) | |||
| i magnitude | 19.50 (0.02) | 19.50 (0.02) | |||
| z magnitude | 19.88 (0.09) | 19.65 (0.07) | |||
| G magnitude | 18.95 (0.004) | 18.99 (0.004) | 18.95 (0.004) | ||
| BP magnitude | 18.91 (0.03) | 18.85 (0.03) | |||
| RP magnitude | 19.20 (0.06) | 19.15 (0.05) | |||
| Pan g magnitude | 18.78 (0.009) | ||||
| Pan r magnitude | 19.19 (0.01) | ||||
| Pan i magnitude | 19.50 (0.007) | ||||
| Pan z magnitude | 19.72 (0.02) | ||||
| Pan y magnitude | 19.75 (0.02) | ||||
| E(B-V) | 0.017 | ||||
* 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.