All names: PG 0921+208, TIC 414967566, WISEA J092405.28+203546.3, Gaia DR3 637474168652578176, WISE J092405.29+203546.3, UCAC4 553-046180, SDSS J092405.25+203546.3, 2MASS J09240525+2035464, GALEX J092405.2+203546, Ton 1055, PG0921+208, Gaia DR2 637474168652578176, SDSS J092405.26+203546.3
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 09 24 05.22 | 09 24 05.25 (0.04) | ||
| Declination | 20 35 48.69 | 20 35 46.53 (0.03) | ||
| 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] | 0.44 (0.09) | 0.58 (0.05) | |
| Distance | [pc] | 2298.32 (485) | 1732.50 (142) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 17.034 (0.1) | 16.873 (0.05) | |
| Proper motion (declination) | [mas/yr] | -36.034 (0.08) | -36.31 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.54 (0.01) | |||
| V magnitude | 14.69 (0.01) | |||
| R magnitude | 14.90 (0.3) | |||
| I magnitude | ||||
| J magnitude | 15.10 (0.04) | 15.10 (0.04) | ||
| H magnitude | 15.15 (0.09) | 15.15 (0.09) | ||
| K magnitude | 14.90 (0.1) | 14.90 (0.1) | ||
| u magnitude | 14.48 (0.004) | |||
| g magnitude | 14.44 (0.003) | 14.53 (0.06) | ||
| r magnitude | 14.85 (0.004) | 14.86 (0.08) | ||
| i magnitude | 15.14 (0.004) | 15.24 (0.01) | ||
| z magnitude | 15.39 (0.006) | |||
| G magnitude | 14.69 (0.0006) | 14.67 (0.003) | ||
| BP magnitude | 14.54 (0.006) | |||
| RP magnitude | 14.83 (0.002) | |||
| Pan g magnitude | 14.54 (0.007) | |||
| Pan r magnitude | 14.87 (0.006) | |||
| Pan i magnitude | 15.17 (0.006) | |||
| Pan z magnitude | 15.42 (0.003) | |||
| Pan y magnitude | 15.56 (0.006) | |||
| E(B-V) | 0.033 | |||
* 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.