All names: UCAC4 548-134131, WISEA J204836.20+193243.8, TIC 224617017, 2MASS J20483617+1932435, Gaia DR2 1814389009845462400, GALEX J204836.1+193244, GALEXJ20486+1932, WISE J204836.20+193243.8, UCAC2 38885187, Gaia DR3 1814389009845462400
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 48 36.16 | 20 48 36.18 (0.02) | ||
| Declination | 19 32 44.28 | 19 32 43.63 (0.02) | ||
| 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] | 0.68 (0.06) | 0.64 (0.03) | |
| Distance | [pc] | 1471.45 (121) | 1573.32 (82) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.42 (0.08) | -4.355 (0.03) | |
| Proper motion (declination) | [mas/yr] | -4.242 (0.07) | -4.135 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.41 (0.06) | |||
| V magnitude | 14.57 (0.02) | |||
| R magnitude | 14.86 (0.2) | |||
| I magnitude | ||||
| J magnitude | 15.10 (0.04) | 15.10 (0.04) | ||
| H magnitude | 15.19 (0.08) | 15.19 (0.08) | ||
| K magnitude | 15.29 (0.2) | 15.29 (0.2) | ||
| u magnitude | ||||
| g magnitude | 14.36 (0.05) | |||
| r magnitude | 14.80 (0.02) | |||
| i magnitude | 15.35 (0.01) | |||
| z magnitude | ||||
| G magnitude | 14.54 (0.0006) | 14.53 (0.003) | ||
| BP magnitude | 14.36 (0.004) | |||
| RP magnitude | 14.75 (0.002) | |||
| Pan g magnitude | 14.40 (0.001) | |||
| Pan r magnitude | 14.77 (0.0005) | |||
| Pan i magnitude | 15.11 (0.003) | |||
| Pan z magnitude | 15.36 (0.002) | |||
| Pan y magnitude | 15.52 (0.002) | |||
| E(B-V) | 0.081 | |||
* 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.