All names: 2MASS J20313933-7340497, EC 20260-7350, UBV M 43552, Gaia DR2 6372836091139030656, Gaia DR3 6372836091139030656, TIC 404239479, JL 53, GEN# +6.20022053, GALEX J203139.1-734049, EC20260-7350
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 31 39.27 | 20 31 39.31 (0.03) | ||
| Declination | -73 40 48.68 | -73 40 49.72 (0.04) | ||
| Spectral type | sdOB | sdOB | ||
| 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] | 0.23 (0.05) | 0.28 (0.04) | |
| Distance | [pc] | 4384.04 (1044) | 3579.10 (561) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 3.938 (0.08) | 3.95 (0.04) | |
| Proper motion (declination) | [mas/yr] | -5.011 (0.1) | -5.141 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.65 | |||
| V magnitude | 15.90 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.56 (0.1) | 16.56 (0.1) | ||
| H magnitude | 16.27 | |||
| K magnitude | 15.95 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.88 (0.001) | 15.86 (0.003) | ||
| BP magnitude | 15.66 (0.01) | |||
| RP magnitude | 16.15 (0.004) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.049 | |||
* 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.