All names: Gaia DR3 6785850037629893888, EC21276-3049, TIC 89396802, 2MASS J21303513-3036167, Gaia DR2 6785850037629893888, UCAC4 297-230773, EC 21276-3049, GALEX J213035.1-303616
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 30 35.07 | 21 30 35.13 (0.05) | ||
| Declination | -30 36 17.10 | -30 36 16.93 (0.04) | ||
| Spectral type | sdB+F | sdB+F | ||
| 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] | 0.05 (0.1) | 0.21 (0.05) | |
| Distance | [pc] | 21097.05 (45043) | 4852.01 (1259) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 3.864 (0.1) | 3.81 (0.06) | |
| Proper motion (declination) | [mas/yr] | -6.466 (0.1) | -6.757 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.97 (0.08) | |||
| V magnitude | 15.91 (0.05) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.39 (0.1) | 16.39 (0.1) | ||
| H magnitude | 16.46 | |||
| K magnitude | 15.28 | |||
| u magnitude | ||||
| g magnitude | 15.86 (0.07) | |||
| r magnitude | 16.01 (0.1) | |||
| i magnitude | 15.69 (0.01) | |||
| z magnitude | ||||
| G magnitude | 16.04 (0.001) | 16.02 (0.003) | ||
| BP magnitude | 15.95 (0.008) | |||
| RP magnitude | 16.12 (0.007) | |||
| Pan g magnitude | 15.93 (0.0006) | |||
| Pan r magnitude | 16.19 (0.002) | |||
| Pan i magnitude | 16.48 (0.003) | |||
| Pan z magnitude | 16.63 (0.01) | |||
| Pan y magnitude | 16.73 (0.0008) | |||
| E(B-V) | 0.055 | |||
* 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.