All names: 2MASS J20274326-2700390, TIC 302065890, Gaia DR3 6799696054418030848, Gaia DR2 6799696054418030848, BPSCS22955-89, EC 20247-2710, BPS CS 22955-0089
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 27 43.27 | 20 27 43.29 (0.05) | ||
| Declination | -27 00 38.98 | -27 00 38.93 (0.03) | ||
| 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] | 0.41 (0.08) | 0.45 (0.06) | |
| Distance | [pc] | 2412.55 (444) | 2219.76 (271) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.949 (0.1) | 1.131 (0.06) | |
| Proper motion (declination) | [mas/yr] | -10.807 (0.07) | -10.74 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.47 | |||
| V magnitude | 15.60 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.17 (0.08) | 16.17 (0.08) | ||
| H magnitude | 16.26 (0.2) | 16.26 (0.2) | ||
| K magnitude | 15.41 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.66 (0.0008) | 15.64 (0.003) | ||
| BP magnitude | 15.44 (0.007) | |||
| RP magnitude | 15.89 (0.005) | |||
| Pan g magnitude | 15.50 (0.006) | |||
| Pan r magnitude | 15.89 (0.002) | |||
| Pan i magnitude | 16.23 (0.002) | |||
| Pan z magnitude | 16.49 (0.003) | |||
| Pan y magnitude | 16.67 (0.006) | |||
| E(B-V) | 0.060 | |||
* 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.