All names: TIC 231620255, 2MASS J21030203-5756090, Gaia DR2 6456772362126438784, EC20592-5808, EC 20592-5808, Gaia DR3 6456772362126438784, UCAC4 161-218019, GALEX J210302.0-575608
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 03 02.04 | 21 03 02.01 (0.03) | ||
| Declination | -57 56 07.66 | -57 56 08.64 (0.03) | ||
| Spectral type | sdB | B/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] | 0.09 (0.06) | 0.19 (0.04) | |
| Distance | [pc] | 11049.72 (6715) | 5173.31 (1057) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.598 (0.09) | 1.424 (0.04) | |
| Proper motion (declination) | [mas/yr] | -8.058 (0.09) | -8.031 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.88 (0.03) | |||
| V magnitude | 15.94 (0.06) | |||
| R magnitude | 16.22 (0.1) | |||
| I magnitude | ||||
| J magnitude | 16.11 (0.1) | 16.11 (0.1) | ||
| H magnitude | 15.82 (0.2) | 15.82 (0.2) | ||
| K magnitude | 15.68 | |||
| u magnitude | ||||
| g magnitude | 15.73 (0.01) | |||
| r magnitude | 16.09 (0.01) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.95 (0.0008) | 15.93 (0.003) | ||
| BP magnitude | 15.85 (0.006) | |||
| RP magnitude | 16.04 (0.004) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.021 | |||
* 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.