All names: GALEX J212508.3-261420, Gaia EDR3 6791026886266626304, UCAC2 21216584, Gaia DR2 6791026886266626304, GALEXJ21251-2614, 2MASS J21250837-2614211, Gaia DR3 6791026886266626304, UCAC4 319-227805, EC 21222-2627, Ton S 18, TIC 300577754
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 25 08.36 (0.05) | 21 25 08.30 | 21 25 08.35 (0.05) | ||
| Declination | -26 14 21.22 (0.04) | -26 14 20.80 | -26 14 21.05 (0.04) | ||
| Spectral type | sdO | 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] | 0.66 (0.06) | 0.87 (0.08) | 0.66 (0.06) | |
| Distance | [pc] | 1518.60 (141) | 1143.64 (102) | 1518.60 (141) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 3.96 (0.05) | 3.923 (0.1) | 3.96 (0.05) | |
| Proper motion (declination) | [mas/yr] | -10.451 (0.04) | -10.444 (0.1) | -10.451 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.96 | ||||
| V magnitude | 15.28 | ||||
| R magnitude | 15.65 (0.05) | ||||
| I magnitude | |||||
| J magnitude | 15.79 (0.07) | 15.79 (0.07) | |||
| H magnitude | 15.85 (0.1) | 15.85 (0.1) | |||
| K magnitude | 16.10 (0.3) | 16.10 (0.3) | |||
| u magnitude | |||||
| g magnitude | 14.96 (0.01) | ||||
| r magnitude | 15.39 (0.01) | ||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 15.15 (0.003) | 15.17 (0.0009) | 15.15 (0.003) | ||
| BP magnitude | 14.99 (0.003) | 14.92 (0.01) | |||
| RP magnitude | 15.47 (0.004) | 15.47 (0.003) | |||
| Pan g magnitude | 14.99 (0.007) | ||||
| Pan r magnitude | 15.43 (0.004) | ||||
| Pan i magnitude | 15.79 (0.002) | ||||
| Pan z magnitude | 16.08 (0.007) | ||||
| Pan y magnitude | 16.30 (0.008) | ||||
| E(B-V) | 0.055 | ||||
* 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.