All names: LAMOST J093006.79+314258.4, Gaia DR3 697904599026844160, SDSSJ093006.79+314258.4, Gaia DR2 697904599026844160, GALEX J093006.7+314259, CBS 10, Gaia EDR3 697904599026844160, Ton 425, SDSS J093006.79+314258.4
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 09 30 06.80 (0.1) | 09 30 06.79 | 09 30 06.80 (0.1) | ||
| Declination | 31 42 58.30 (0.1) | 31 42 58.40 | 31 42 58.36 (0.1) | ||
| Spectral type | sdOB | sdB | |||
| Effective temperature | [K] | 33427.0 (919) | |||
| log(g) | [cgs] | 5.88 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.42 (0.1) | 0.57 (0.2) | 0.42 (0.1) | |
| Distance | [pc] | 2365.18 (699) | 1763.36 (716) | 2365.18 (699) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.105 (0.1) | -1.401 (0.5) | -1.105 (0.1) | |
| Proper motion (declination) | [mas/yr] | -3.515 (0.1) | -3.061 (0.5) | -3.515 (0.1) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.40 | ||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 18.10 (0.04) | ||||
| H magnitude | 18.20 (0.1) | ||||
| K magnitude | 18.10 (0.2) | ||||
| u magnitude | 16.69 (0.007) | 16.69 (0.007) | |||
| g magnitude | 16.97 (0.004) | 16.97 (0.004) | |||
| r magnitude | 17.48 (0.005) | 17.48 (0.005) | |||
| i magnitude | 17.87 (0.007) | 17.87 (0.007) | |||
| z magnitude | 18.19 (0.02) | 18.19 (0.02) | |||
| G magnitude | 17.25 (0.003) | 17.28 (0.002) | 17.25 (0.003) | ||
| BP magnitude | 17.10 (0.007) | 17.04 (0.009) | |||
| RP magnitude | 17.57 (0.01) | 17.60 (0.01) | |||
| Pan g magnitude | 17.07 (0.007) | ||||
| Pan r magnitude | 17.51 (0.005) | ||||
| Pan i magnitude | 17.89 (0.01) | ||||
| Pan z magnitude | 18.19 (0.01) | ||||
| Pan y magnitude | 18.37 (0.02) | ||||
| E(B-V) | 0.018 | ||||
* 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.