All names: Gaia DR3 2110728868367388672, WISE J184020.86+414314.4, TIC 157799702, SDSS J184020.87+414314.2, O11J184021+414315, Gaia DR2 2110728868367388672, UCAC4 659-066574, WISEA J184020.85+414314.3, 2MASS J18402088+4143143
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 18 40 21.00 | 18 40 20.88 (0.02) | ||
| Declination | 41 43 15.00 | 41 43 14.37 (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] | 0.07 (0.04) | 0.06 (0.02) | |
| Distance | [pc] | 14064.70 (7438) | 15455.95 (5303) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.589 (0.06) | -3.563 (0.02) | |
| Proper motion (declination) | [mas/yr] | -4.97 (0.07) | -5.023 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.62 (0.03) | |||
| V magnitude | 14.90 (0.04) | |||
| R magnitude | 15.13 (0.2) | |||
| I magnitude | ||||
| J magnitude | 15.24 (0.05) | 15.24 (0.05) | ||
| H magnitude | 15.24 (0.09) | 15.24 (0.09) | ||
| K magnitude | 15.11 (0.2) | 15.11 (0.2) | ||
| u magnitude | ||||
| g magnitude | 14.69 (0.02) | |||
| r magnitude | 15.04 (0.1) | |||
| i magnitude | 15.26 (0.07) | |||
| z magnitude | ||||
| G magnitude | 14.93 (0.0005) | 14.91 (0.003) | ||
| BP magnitude | 14.83 (0.004) | |||
| RP magnitude | 15.01 (0.002) | |||
| Pan g magnitude | 14.81 (0.008) | |||
| Pan r magnitude | 15.09 (0.0007) | |||
| Pan i magnitude | 15.36 (0.001) | |||
| Pan z magnitude | 15.54 (0.003) | |||
| Pan y magnitude | 15.65 (0.004) | |||
| E(B-V) | 0.044 | |||
* 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.