All names: 2MASS J15404253-0213398, TIC 46358643, Gaia DR3 4403637222790534016, GALEX J154042.5-021339, Gaia DR2 4403637222790534016, SDSS J154042.52-021340.1, SDSSJ154042.52-021340.1
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 15 40 42.52 | 15 40 42.52 (0.04) | ||
| Declination | -02 13 40.15 | -02 13 40.09 (0.03) | ||
| Spectral type | sd | 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] | 0.59 (0.07) | 0.58 (0.04) | |
| Distance | [pc] | 1689.76 (213) | 1716.15 (131) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.293 (0.1) | -1.138 (0.05) | |
| Proper motion (declination) | [mas/yr] | -8.031 (0.1) | -8.014 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.30 (0.1) | 16.30 (0.1) | ||
| H magnitude | 16.14 (0.2) | 16.14 (0.2) | ||
| K magnitude | 15.70 | |||
| u magnitude | 15.80 (0.005) | 15.81 (0.03) | ||
| g magnitude | 15.81 (0.003) | 15.85 (0.02) | ||
| r magnitude | 16.16 (0.004) | 16.16 (0.01) | ||
| i magnitude | 16.39 (0.005) | 16.40 (0.01) | ||
| z magnitude | 16.66 (0.009) | 16.64 (0.02) | ||
| G magnitude | 16.03 (0.001) | 16.01 (0.003) | ||
| BP magnitude | 15.92 (0.006) | |||
| RP magnitude | 16.12 (0.003) | |||
| Pan g magnitude | 15.89 (0.01) | |||
| Pan r magnitude | 16.18 (0.003) | |||
| Pan i magnitude | 16.45 (0.003) | |||
| Pan z magnitude | 16.67 (0.004) | |||
| Pan y magnitude | 16.77 (0.007) | |||
| E(B-V) | 0.105 | |||
* 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.