All names: Ton 1055, UCAC4 553-046180, TIC 414967566, 2MASS J09240525+2035464, SDSS J092405.26+203546.3, SDSS J092405.25+203546.3, WISEA J092405.28+203546.3, GALEX J092405.2+203546, PG 0921+208, Gaia DR2 637474168652578176, WISE J092405.29+203546.3, Gaia DR3 637474168652578176, PG0921+208
| 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.