All names: Gaia DR2 3905852815285854336, SDSS J120534.59+090315.9, GALEX J120534.6+090315, Gaia DR3 3905852815285854336, TIC 397482304, 2MASS J12053459+0903158, PG1203+093, PG 1203+093
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 12 05 34.58 | 12 05 34.59 (0.03) | ||
| Declination | 09 03 17.10 | 09 03 16.02 (0.02) | ||
| Spectral type | sdB | sdB | ||
| 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] | 0.27 (0.05) | 0.25 (0.04) | |
| Distance | [pc] | 3706.45 (739) | 4008.02 (578) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.851 (0.1) | 3.13 (0.04) | |
| Proper motion (declination) | [mas/yr] | -21.916 (0.06) | -21.981 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.26 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.61 (0.07) | 15.59 (0.006) | ||
| H magnitude | 15.74 (0.1) | 15.63 (0.01) | ||
| K magnitude | 16.75 | 15.70 (0.02) | ||
| u magnitude | 15.33 (0.005) | 15.35 (0.02) | ||
| g magnitude | 15.04 (0.003) | 15.07 (0.02) | ||
| r magnitude | 15.42 (0.004) | 15.41 (0.02) | ||
| i magnitude | 15.69 (0.004) | 15.70 (0.01) | ||
| z magnitude | 15.94 (0.007) | 15.97 (0.02) | ||
| G magnitude | 15.27 (0.0007) | 15.25 (0.003) | ||
| BP magnitude | 15.15 (0.004) | |||
| RP magnitude | 15.38 (0.003) | |||
| Pan g magnitude | 15.11 (0.003) | |||
| Pan r magnitude | 15.44 (0.003) | |||
| Pan i magnitude | 15.73 (0.004) | |||
| Pan z magnitude | 15.96 (0.005) | |||
| Pan y magnitude | 16.07 (0.005) | |||
| E(B-V) | 0.022 | |||
* 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.