All names: Gaia DR2 102803104542235008, USNO-B1.0 1147-00026572, PG0216+246, UCAC4 574-004842, 2MASS J02194460+2447237, Gaia EDR3 102803104542235008, LAMOST J021944.59+244724.0, PG 0216+246, TIC 21017385, Gaia DR3 102803104542235008, GALEX J021944.5+244724
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 02 19 44.59 (0.06) | 02 19 44.61 | 02 19 44.59 (0.06) | ||
| Declination | 24 47 23.98 (0.05) | 24 47 23.98 | 24 47 24.00 (0.05) | ||
| Spectral type | He-sdOB | sdOD | |||
| Effective temperature | [K] | 42600.0 (122) | |||
| log(g) | [cgs] | 6.27 (0.02) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.39 (0.07) | 0.13 (0.09) | 0.39 (0.07) | |
| Distance | [pc] | 2545.18 (444) | 7462.69 (5241) | 2545.18 (444) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.743 (0.07) | -2.925 (0.2) | -2.743 (0.07) | |
| Proper motion (declination) | [mas/yr] | -1.353 (0.06) | -1.519 (0.1) | -1.353 (0.06) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.20 (0.07) | ||||
| V magnitude | 16.36 (0.02) | ||||
| R magnitude | 16.43 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 16.92 (0.1) | 16.92 (0.1) | |||
| H magnitude | 16.91 | ||||
| K magnitude | 15.74 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 16.36 (0.003) | 16.38 (0.002) | 16.35 (0.003) | ||
| BP magnitude | 16.23 (0.004) | 16.18 (0.01) | |||
| RP magnitude | 16.58 (0.008) | 16.60 (0.007) | |||
| Pan g magnitude | 16.18 (0.0003) | ||||
| Pan r magnitude | 16.57 (0.005) | ||||
| Pan i magnitude | 16.91 (0.004) | ||||
| Pan z magnitude | 17.15 (0.004) | ||||
| Pan y magnitude | 17.33 (0.01) | ||||
| E(B-V) | 0.099 | ||||
* 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.