All names: EC20575-1423, USNO-B1.0 0758-00725443, Gaia DR3 6888269309535155456, EC 20575-1423, TIC 442519020, CRTS J210017.4-141125, ATO J315.0724-14.1901, GALEX J210017.3-141124, 2MASS J21001740-1411246, Gaia DR2 6888269309535155456, Gaia EDR3 6888269309535155456
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 00 17.39 (0.06) | 21 00 17.37 | 21 00 17.40 (0.06) | ||
| Declination | -14 11 24.61 (0.04) | -14 11 24.61 | -14 11 24.59 (0.04) | ||
| Spectral type | sdB+dM | 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] | 0.44 (0.07) | 0.45 (0.08) | 0.44 (0.07) | |
| Distance | [pc] | 2288.85 (371) | 2221.24 (412) | 2288.85 (371) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -5.984 (0.07) | -5.938 (0.1) | -5.984 (0.07) | |
| Proper motion (declination) | [mas/yr] | -1.088 (0.06) | -1.084 (0.09) | -1.088 (0.06) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.44 | ||||
| V magnitude | 16.70 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.76 (0.1) | 16.76 (0.1) | |||
| H magnitude | 16.84 | ||||
| K magnitude | 15.60 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 16.56 (0.007) | 16.62 (0.01) | 16.56 (0.007) | ||
| BP magnitude | 16.46 (0.02) | 16.39 (0.02) | |||
| RP magnitude | 16.77 (0.03) | 16.75 (0.04) | |||
| Pan g magnitude | 16.43 (0.01) | ||||
| Pan r magnitude | 16.83 (0.009) | ||||
| Pan i magnitude | 17.10 (0.01) | ||||
| Pan z magnitude | 17.39 (0.01) | ||||
| Pan y magnitude | 17.47 (0.03) | ||||
| 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.