All names: SBC9 3343, [BBW2000] FT 87, UCAC4 212-183148, EC 20260-4757, UCAC2 11445304, Gaia DR3 6668388287018536832, Gaia EDR3 6668388287018536832, Gaia DR2 6668388287018536832, 2MASS J20293410-4747261, TIC 369985217, GALEX J202934.0-474726, GALEXJ20295-4747, UCAC3 85-414213, USNO-A1.0 0375-39045904, FAUST 4645
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 29 34.11 (0.03) | 20 29 34.04 | 20 29 34.11 (0.03) | ||
| Declination | -47 47 26.31 (0.02) | -47 47 26.65 | -47 47 26.30 (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] | 1.51 (0.04) | 1.47 (0.05) | 1.51 (0.04) | |
| Distance | [pc] | 662.03 (17) | 681.38 (25) | 662.03 (17) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.516 (0.04) | -1.557 (0.07) | -1.516 (0.04) | |
| Proper motion (declination) | [mas/yr] | -0.983 (0.04) | -1.185 (0.07) | -0.983 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.55 (0.03) | ||||
| V magnitude | 13.73 (0.01) | ||||
| R magnitude | 14.12 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 14.42 (0.03) | 14.42 (0.03) | |||
| H magnitude | 14.46 (0.05) | 14.46 (0.05) | |||
| K magnitude | 14.73 (0.1) | 14.73 (0.1) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 13.73 (0.003) | 13.75 (0.0005) | 13.73 (0.003) | ||
| BP magnitude | 13.58 (0.003) | 13.52 (0.007) | |||
| RP magnitude | 14.02 (0.004) | 14.02 (0.003) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.025 | ||||
* 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.