All names: GALEX J190920.1+454056, UCAC4 679-066588, 2MASS J19092001+4540563, Gaia DR3 2130283235992373760, GALEX J190920.0+454056, O11J190920+454057, TIC 158417255, WISE J190920.01+454056.1, Gaia DR2 2130283235992373760, WISEA J190920.01+454056.0
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 19 09 20.00 | 19 09 20.02 (0.02) | ||
| Declination | 45 40 57.00 | 45 40 56.32 (0.02) | ||
| Spectral type | sd | |||
| 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] | 0.00 (0.03) | 0.03 (0.02) | |
| Distance | [pc] | 232558.14 (1757707) | 35714.29 (28827) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.7 (0.06) | -1.91 (0.03) | |
| Proper motion (declination) | [mas/yr] | -2.104 (0.06) | -1.936 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.35 (0.02) | |||
| V magnitude | 14.37 (0.06) | |||
| R magnitude | 14.68 (0.2) | |||
| I magnitude | ||||
| J magnitude | 14.72 (0.03) | 14.72 (0.03) | ||
| H magnitude | 14.87 (0.06) | 14.87 (0.06) | ||
| K magnitude | 14.88 (0.1) | 14.88 (0.1) | ||
| u magnitude | ||||
| g magnitude | 14.24 (0.04) | |||
| r magnitude | 14.59 (0.06) | |||
| i magnitude | 14.89 (0.3) | |||
| z magnitude | ||||
| G magnitude | 14.36 (0.0004) | 14.34 (0.003) | ||
| BP magnitude | 14.23 (0.006) | |||
| RP magnitude | 14.50 (0.002) | |||
| Pan g magnitude | 14.22 (0.004) | |||
| Pan r magnitude | 14.55 (0.002) | |||
| Pan i magnitude | 14.85 (0.002) | |||
| Pan z magnitude | 15.06 (0.002) | |||
| Pan y magnitude | 15.18 (0.004) | |||
| E(B-V) | 0.035 | |||
* 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.