All names: 2MASS J12092119-2804130, Gaia EDR3 3474474890010160128, TIC 402107174, EC 12067-2747, GALEX J120921.1-280413, EC12067-2747, Gaia DR2 3474474890010160128, Gaia DR3 3474474890010160128
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 09 21.14 (0.04) | 12 09 21.10 | 12 09 21.13 (0.04) | ||
| Declination | -28 04 13.60 (0.04) | -28 04 12.64 | -28 04 13.54 (0.04) | ||
| 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] | 0.64 (0.05) | 0.76 (0.08) | 0.64 (0.05) | |
| Distance | [pc] | 1574.80 (126) | 1307.36 (138) | 1574.80 (126) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 3.58 (0.05) | 3.564 (0.1) | 3.58 (0.05) | |
| Proper motion (declination) | [mas/yr] | -3.502 (0.05) | -3.49 (0.1) | -3.502 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.67 | ||||
| V magnitude | 15.80 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.18 (0.1) | 16.18 (0.1) | |||
| H magnitude | 16.58 (0.3) | 16.58 (0.3) | |||
| K magnitude | 15.88 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 15.83 (0.003) | 15.86 (0.001) | 15.83 (0.003) | ||
| BP magnitude | 15.73 (0.003) | 15.70 (0.005) | |||
| RP magnitude | 16.03 (0.005) | 16.03 (0.004) | |||
| Pan g magnitude | 15.69 (0.003) | ||||
| Pan r magnitude | 16.04 (0.002) | ||||
| Pan i magnitude | 16.38 (0.004) | ||||
| Pan z magnitude | 16.62 (0.003) | ||||
| Pan y magnitude | 16.75 (0.006) | ||||
| E(B-V) | 0.035 | ||||
* 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.