All names: TIC 168304840, AP J19204121-2829403, GALAH 170724003101359, Gaia DR3 6759580334024198528, UCAC2 20273195, WISE J192041.19-282940.2, GALEX J192041.4-282939, GALEXJ19206-2829, UCAC4 308-261582, Gaia EDR3 6759568724725347456, Gaia DR2 6759580334024198528, WISEA J192041.18-282940.4, 2MASS J19204121-2829403
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 19 20 47.47 (0.6) | 19 20 41.42 | 19 20 41.22 (0.03) | ||
| Declination | -28 29 00.37 (0.6) | -28 29 39.74 | -28 29 40.27 (0.03) | ||
| Spectral type | sdO | sdO | |||
| 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] | 0.93 (0.7) | 1.29 (0.07) | 1.14 (0.04) | |
| Distance | [pc] | 1078.28 (802) | 776.22 (39) | 874.28 (27) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.545 (0.7) | -0.468 (0.1) | -0.656 (0.04) | |
| Proper motion (declination) | [mas/yr] | -6.025 (0.6) | -13.58 (0.1) | -13.592 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 12.99 (0.01) | ||||
| V magnitude | 13.20 (0.01) | ||||
| R magnitude | 13.40 (0.06) | ||||
| I magnitude | |||||
| J magnitude | 13.74 (0.03) | 13.74 (0.03) | |||
| H magnitude | 13.81 (0.03) | 13.81 (0.03) | |||
| K magnitude | 13.88 (0.06) | 13.88 (0.06) | |||
| u magnitude | |||||
| g magnitude | 12.96 (0.01) | ||||
| r magnitude | 13.39 (0.02) | ||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 20.19 (0.008) | 13.16 (0.0009) | 13.14 (0.003) | ||
| BP magnitude | 20.53 (0.1) | 12.92 (0.01) | |||
| RP magnitude | 19.73 (0.09) | 13.38 (0.003) | |||
| Pan g magnitude | 13.37 | ||||
| Pan r magnitude | 13.41 (0.002) | ||||
| Pan i magnitude | 13.73 (0.0004) | ||||
| Pan z magnitude | 13.98 (0.003) | ||||
| Pan y magnitude | 14.17 (0.002) | ||||
| E(B-V) | 0.099 | ||||
* 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.