All names: LAMOST J070828.40+442534.8, Gaia DR2 953141929764017408, Gaia DR3 953141929764017408, Gaia EDR3 953141929764017408, UCAC4 673-050425, LAMOSTJ070828.40+442534.8, GALEX J070828.4+442534
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 07 08 28.41 (0.05) | 07 08 28.40 | 07 08 28.41 (0.05) | ||
| Declination | 44 25 34.82 (0.05) | 44 25 34.89 | 44 25 35.10 (0.05) | ||
| Spectral type | He-sdOB | sdBHe | |||
| Effective temperature | [K] | 41097.0 (903) | |||
| log(g) | [cgs] | 6.31 (0.08) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.65 (0.05) | 0.62 (0.07) | 0.65 (0.05) | |
| Distance | [pc] | 1529.05 (125) | 1601.02 (183) | 1529.05 (125) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.828 (0.06) | -2.003 (0.1) | -1.828 (0.06) | |
| Proper motion (declination) | [mas/yr] | -17.159 (0.05) | -17.152 (0.1) | -17.159 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.17 (0.05) | ||||
| V magnitude | 16.17 (0.01) | ||||
| R magnitude | 16.47 (0.06) | ||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 16.27 (0.003) | 16.30 (0.002) | 16.27 (0.003) | ||
| BP magnitude | 16.17 (0.005) | 16.11 (0.01) | |||
| RP magnitude | 16.45 (0.008) | 16.44 (0.006) | |||
| Pan g magnitude | 16.15 (0.003) | ||||
| Pan r magnitude | 16.47 (0.004) | ||||
| Pan i magnitude | 16.78 (0.002) | ||||
| Pan z magnitude | 17.02 (0.006) | ||||
| Pan y magnitude | 17.21 (0.01) | ||||
| E(B-V) | 0.080 | ||||
* 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.