All names: LAMOSTJ225442.30+101359.8, GALEX J225442.2+101359, Gaia EDR3 2717973399330302592, LAMOST J225442.30+101359.8, Gaia DR3 2717973399330302592, Gaia DR2 2717973090092215168, Gaia DR3 2717973090092215168
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 22 54 38.07 (0.2) | 22 54 42.30 | 22 54 38.07 | 22 54 42.31 (0.08) | ||
| Declination | 10 15 29.01 (0.2) | 10 13 59.81 | 10 15 29.01 | 10 13 59.75 (0.05) | ||
| Spectral type | sdOB | DA | sdB | |||
| Effective temperature | [K] | 36124.0 (219) | 13749.0 (979) | |||
| log(g) | [cgs] | 5.44 (0.04) | 7.77 (0.1) | |||
| Mass | [M☉] | 0.485 (0.09) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 3.14 (0.3) | 0.20 (0.09) | 3.14 | 0.28 (0.08) | |
| Distance | [pc] | 318.96 (30) | 5104.65 (2392) | 318.96 | 3541.08 (947) | |
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 16.922 (0.3) | -0.132 (0.2) | -0.115 (0.09) | ||
| Proper motion (declination) | [mas/yr] | -22.213 (0.3) | -5.918 (0.1) | -6.112 (0.07) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | 16.44 (0.007) | |||||
| g magnitude | 16.61 (0.004) | |||||
| r magnitude | 16.98 (0.005) | |||||
| i magnitude | 17.22 (0.006) | |||||
| z magnitude | 17.42 (0.01) | |||||
| G magnitude | 18.75 (0.004) | 16.79 (0.002) | 18.75 | 16.77 (0.003) | ||
| BP magnitude | 18.77 (0.02) | 16.63 (0.01) | ||||
| RP magnitude | 18.86 (0.04) | 16.91 (0.009) | ||||
| Pan g magnitude | 16.64 (0.004) | |||||
| Pan r magnitude | 16.98 (0.003) | |||||
| Pan i magnitude | 17.26 (0.004) | |||||
| Pan z magnitude | 17.46 (0.005) | |||||
| Pan y magnitude | 17.58 (0.01) | |||||
| E(B-V) | 0.060 | |||||
* 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.