All names: 2MASS J20040051-1021128, Gaia DR2 4191051494285910784, TIC 70771512, Gaia DR3 4191051494285910784, GALEX J200400.4-102112, SDSS J200400.51-102112.6, SDSSJ200400.52-102112.7
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 04 00.52 | 20 04 00.52 (0.03) | ||
| Declination | -10 21 12.70 | -10 21 12.64 (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] | 0.40 (0.05) | 0.37 (0.04) | |
| Distance | [pc] | 2517.62 (319) | 2724.80 (288) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.537 (0.09) | -4.608 (0.04) | |
| Proper motion (declination) | [mas/yr] | -4.591 (0.06) | -4.547 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.27 (0.06) | 15.27 (0.06) | ||
| H magnitude | 15.24 (0.07) | 15.24 (0.07) | ||
| K magnitude | 15.47 (0.2) | 15.47 (0.2) | ||
| u magnitude | 15.48 (0.005) | 15.48 (0.005) | ||
| g magnitude | 15.06 (0.003) | 15.06 (0.003) | ||
| r magnitude | 15.30 (0.004) | 15.30 (0.004) | ||
| i magnitude | 15.47 (0.004) | 15.47 (0.004) | ||
| z magnitude | 15.63 (0.006) | 15.63 (0.006) | ||
| G magnitude | 15.18 (0.0005) | 15.16 (0.003) | ||
| BP magnitude | 15.13 (0.003) | |||
| RP magnitude | 15.18 (0.003) | |||
| Pan g magnitude | 15.12 (0.002) | |||
| Pan r magnitude | 15.31 (0.0009) | |||
| Pan i magnitude | 15.52 (0.002) | |||
| Pan z magnitude | 15.68 (0.004) | |||
| Pan y magnitude | 15.75 (0.004) | |||
| E(B-V) | 0.148 | |||
* 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.