All names: LAMOST J045219.31+215207.0, GALEX J045219.3+215206, Gaia DR3 3412036236008926464, SDSSJ045219.32+215207.0, Gaia DR2 3412036236008926464, SDSS J045219.32+215207.0, SDSS J045219.31+215207.0
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 52 19.32 | 04 52 19.31 (0.05) | ||
| Declination | 21 52 07.09 | 21 52 07.13 (0.03) | ||
| Spectral type | sd | sdB/sdO | ||
| 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] | 0.66 (0.07) | 0.62 (0.06) | |
| Distance | [pc] | 1526.25 (166) | 1625.75 (148) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.501 (0.1) | 0.242 (0.07) | |
| Proper motion (declination) | [mas/yr] | -1.761 (0.07) | -1.797 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.57 (0.1) | |||
| H magnitude | 16.25 | |||
| K magnitude | 15.18 | |||
| u magnitude | 16.24 (0.005) | 16.24 (0.005) | ||
| g magnitude | 16.39 (0.004) | 16.39 (0.004) | ||
| r magnitude | 16.61 (0.004) | 16.61 (0.004) | ||
| i magnitude | 16.81 (0.005) | 16.81 (0.005) | ||
| z magnitude | 17.00 (0.01) | 17.00 (0.01) | ||
| G magnitude | 16.51 (0.001) | 16.48 (0.003) | ||
| BP magnitude | 16.41 (0.008) | |||
| RP magnitude | 16.49 (0.007) | |||
| Pan g magnitude | 16.45 (0.007) | |||
| Pan r magnitude | 16.63 (0.002) | |||
| Pan i magnitude | 16.83 (0.003) | |||
| Pan z magnitude | 17.00 (0.008) | |||
| Pan y magnitude | 17.15 (0.004) | |||
| E(B-V) | 0.367 | |||
* 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.