All names: WISE J191830.82+570148.4, Gaia DR2 2142748983429920256, TIC 243318299, GALEXJ19185+5701, 2MASS J19183083+5701484, UCAC4 736-064227, Gaia EDR3 2142748983429920256, GALEX J191831.0+570147, WISEA J191830.83+570148.4, Gaia DR3 2142748983429920256
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 19 18 30.82 (0.03) | 19 18 30.91 | 19 18 30.84 (0.03) | ||
| Declination | 57 01 48.22 (0.03) | 57 01 46.30 | 57 01 48.37 (0.03) | ||
| Spectral type | He-sdOB | sdOBHe | |||
| 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] | 1.34 (0.03) | 1.38 (0.04) | 1.34 (0.03) | |
| Distance | [pc] | 745.71 (19) | 725.69 (23) | 745.71 (19) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -6.232 (0.04) | -6.414 (0.1) | -6.232 (0.04) | |
| Proper motion (declination) | [mas/yr] | -9.394 (0.04) | -9.392 (0.1) | -9.394 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.14 (0.01) | ||||
| V magnitude | 13.40 (0.02) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 13.98 (0.03) | 13.98 (0.03) | |||
| H magnitude | 14.17 (0.05) | 14.17 (0.05) | |||
| K magnitude | 14.25 (0.06) | 14.25 (0.06) | |||
| u magnitude | |||||
| g magnitude | 13.14 (0.04) | ||||
| r magnitude | 13.61 (0.06) | ||||
| i magnitude | 14.08 (0.04) | ||||
| z magnitude | |||||
| G magnitude | 13.26 (0.003) | 13.27 (0.0008) | 13.26 (0.003) | ||
| BP magnitude | 13.11 (0.003) | 13.03 (0.007) | |||
| RP magnitude | 13.56 (0.004) | 13.56 (0.002) | |||
| Pan g magnitude | |||||
| Pan r magnitude | 17.45 | ||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.040 | ||||
* 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.