All names: Gaia EDR3 6566180331799837056, GALEX J214454.0-425046, BPS CS 22951-0031, Gaia DR2 6566180331799837056, TIC 147349694, 2MASS J21445411-4250480, UCAC4 236-182009, Gaia DR3 6566180331799837056, BPSCS22951-31
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 44 54.15 (0.03) | 21 44 54.02 | 21 44 54.11 (0.03) | ||
| Declination | -42 50 48.32 (0.03) | -42 50 47.96 | -42 50 48.04 (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] | 1.07 (0.03) | 1.03 (0.05) | 1.07 (0.03) | |
| Distance | [pc] | 933.10 (29) | 971.91 (49) | 933.10 (29) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 21.139 (0.03) | 21.17 (0.07) | 21.139 (0.03) | |
| Proper motion (declination) | [mas/yr] | -17.327 (0.04) | -17.288 (0.07) | -17.327 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.66 (0.01) | ||||
| V magnitude | 13.92 (0.02) | ||||
| R magnitude | 14.34 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 14.53 (0.04) | 14.53 (0.04) | |||
| H magnitude | 14.65 (0.05) | 14.65 (0.05) | |||
| K magnitude | 14.71 (0.08) | 14.71 (0.08) | |||
| u magnitude | |||||
| g magnitude | 13.70 (0.01) | ||||
| r magnitude | 14.15 (0.01) | ||||
| i magnitude | 14.51 (0.02) | ||||
| z magnitude | |||||
| G magnitude | 13.88 (0.003) | 13.90 (0.0005) | 13.88 (0.003) | ||
| BP magnitude | 13.75 (0.003) | 13.69 (0.009) | |||
| RP magnitude | 14.16 (0.004) | 14.16 (0.002) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.015 | ||||
* 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.