All names: Gaia DR2 6898572450745852160, TIC 364957521, Gaia EDR3 6898584476654288128, Gaia DR3 6898572450745852160, SDSSJ212053.72-071544.1, GALEX J212053.7-071544, SDSS J212053.73-071544.0, 2MASS J21205370-0715439, SDSS J212053.72-071544.0, SDSS J212053.73-071544.1
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 20 47.62 (0.6) | 21 20 53.72 | 21 20 53.73 (0.1) | ||
| Declination | -07 14 25.82 (0.6) | -07 15 44.10 | -07 15 44.12 (0.1) | ||
| Spectral type | sdOB | sdO | |||
| Effective temperature | [K] | 37159.0 (1057) | |||
| log(g) | [cgs] | 5.52 (0.2) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 2.68 (0.6) | 0.22 (0.2) | 0.35 (0.1) | |
| Distance | [pc] | 373.02 (90) | 4454.34 (3016) | 2876.87 (852) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.582 (0.8) | 6.872 (0.3) | 7.341 (0.1) | |
| Proper motion (declination) | [mas/yr] | -9.07 (0.8) | -17.396 (0.3) | -17.437 (0.1) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.78 (0.1) | 16.78 (0.1) | |||
| H magnitude | 16.13 (0.2) | 16.13 (0.2) | |||
| K magnitude | 15.69 | ||||
| u magnitude | 18.02 (0.01) | 18.02 (0.01) | |||
| g magnitude | 17.81 (0.006) | 17.81 (0.006) | |||
| r magnitude | 17.72 (0.006) | 17.72 (0.006) | |||
| i magnitude | 17.63 (0.007) | 17.63 (0.007) | |||
| z magnitude | 17.58 (0.02) | 17.60 (0.02) | |||
| G magnitude | 20.38 (0.007) | 17.66 (0.002) | 17.65 (0.003) | ||
| BP magnitude | 20.72 (0.1) | 17.76 (0.01) | |||
| RP magnitude | 19.65 (0.06) | 17.28 (0.02) | |||
| Pan g magnitude | 17.84 (0.005) | ||||
| Pan r magnitude | 17.71 (0.005) | ||||
| Pan i magnitude | 17.64 (0.005) | ||||
| Pan z magnitude | 17.61 (0.007) | ||||
| Pan y magnitude | 17.57 (0.01) | ||||
| E(B-V) | 0.034 | ||||
* 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.