All names: GALEX J212730.3-490415, Gaia DR3 6467069666477281536, Gaia DR2 6467069666477281536, EC21241-4917, 2MASS J21273037-4904175, Gaia EDR3 6467069941355778432, EC 21241-4917, TIC 79493362, UCAC4 205-184852
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 27 22.59 (0.3) | 21 27 30.39 | 21 27 30.39 (0.03) | ||
| Declination | -49 03 00.87 (0.3) | -49 04 17.90 | -49 04 17.59 (0.02) | ||
| 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] | 1.32 (0.5) | 0.15 (0.06) | 0.18 (0.04) | |
| Distance | [pc] | 755.46 (286) | 6706.91 (2555) | 5711.02 (1265) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 5.081 (0.5) | -5.505 (0.07) | -5.427 (0.03) | |
| Proper motion (declination) | [mas/yr] | -7.152 (0.4) | -5.149 (0.08) | -5.15 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.33 (0.03) | ||||
| V magnitude | 15.52 (0.01) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.81 (0.07) | 15.81 (0.07) | |||
| H magnitude | 15.60 (0.1) | 15.60 (0.1) | |||
| K magnitude | 15.60 (0.2) | 15.60 (0.2) | |||
| u magnitude | |||||
| g magnitude | 15.30 (0.01) | ||||
| r magnitude | 15.69 (0.01) | ||||
| i magnitude | 15.87 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 20.11 (0.006) | 15.46 (0.0008) | 15.44 (0.003) | ||
| BP magnitude | 20.49 (0.1) | 15.31 (0.006) | |||
| RP magnitude | 19.63 (0.06) | 15.59 (0.004) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.016 | ||||
* 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.