All names: SDSS J220416.10+061620.6, PG2201+059, Gaia DR2 2720582235480260352, PG 2201+059, TIC 468221350, UCAC4 482-131045, Gaia DR3 2720582235480260352, 2MASS J22041611+0616201
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 04 16.12 | 22 04 16.11 (0.05) | ||
| Declination | 06 16 21.51 | 06 16 20.67 (0.05) | ||
| Spectral type | sd | sd | ||
| 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] | 0.68 (0.07) | 0.51 (0.05) | |
| Distance | [pc] | 1470.16 (156) | 1951.98 (204) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.196 (0.1) | -1.205 (0.06) | |
| Proper motion (declination) | [mas/yr] | -12.808 (0.1) | -13.048 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.42 (0.04) | |||
| V magnitude | 15.66 (0.01) | |||
| R magnitude | 16.01 (0.2) | |||
| I magnitude | ||||
| J magnitude | 16.20 (0.09) | 16.20 (0.09) | ||
| H magnitude | 16.46 (0.2) | 16.46 (0.2) | ||
| K magnitude | 15.70 (0.2) | 15.70 (0.2) | ||
| u magnitude | 15.18 (0.005) | 15.17 (0.02) | ||
| g magnitude | 15.38 (0.005) | 15.38 (0.01) | ||
| r magnitude | 15.82 (0.005) | 15.82 (0.02) | ||
| i magnitude | 16.15 (0.006) | 16.11 (0.03) | ||
| z magnitude | 16.43 (0.009) | 16.42 (0.02) | ||
| G magnitude | 15.62 (0.001) | 15.60 (0.003) | ||
| BP magnitude | 15.44 (0.009) | |||
| RP magnitude | 15.83 (0.009) | |||
| Pan g magnitude | ||||
| Pan r magnitude | 21.09 (0.1) | |||
| Pan i magnitude | 20.26 (0) | |||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.061 | |||
* 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.