All names: WISEA J193033.80-400754.5, 2MASS J19303379-4007542, DENIS J193033.7-400754, WISE J193033.81-400754.4, Gaia DR2 6737621648003628416, TIC 469788902, UCAC4 250-180604, GALEX J193033.7-400753, UCAC2 14729056, GALEXJ19305-4007, Gaia DR3 6737621648003628416
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 19 30 33.75 | 19 30 33.80 (0.03) | ||
| Declination | -40 07 53.95 | -40 07 54.27 (0.03) | ||
| Spectral type | He-sdO | sdOHe | ||
| 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] | 0.95 (0.05) | 0.99 (0.04) | |
| Distance | [pc] | 1050.86 (53) | 1012.56 (39) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.82 (0.09) | -2.839 (0.04) | |
| Proper motion (declination) | [mas/yr] | -16.664 (0.07) | -16.784 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.23 (0.04) | |||
| V magnitude | 14.39 (0.03) | |||
| R magnitude | ||||
| I magnitude | 14.59 (0.03) | |||
| J magnitude | 14.80 (0.04) | 14.80 (0.04) | ||
| H magnitude | 14.83 (0.07) | 14.83 (0.07) | ||
| K magnitude | 14.84 (0.1) | 14.84 (0.1) | ||
| u magnitude | ||||
| g magnitude | 14.21 (0.01) | |||
| r magnitude | 14.61 (0.03) | |||
| i magnitude | 14.84 (0.4) | |||
| z magnitude | ||||
| G magnitude | 14.37 (0.0009) | 14.35 (0.003) | ||
| BP magnitude | 14.22 (0.008) | |||
| RP magnitude | 14.54 (0.002) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.117 | |||
* 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.