All names: SDSS J213907.42+222708.9, WISEA J213907.27+222708.0, EQ J2139+2227, SDSS J213907.41+222708.8, Gaia DR2 1794011692126072320, UCAC4 563-132107, Gaia DR3 1794011692126072320, GALEX J213907.4+222709, TIC 367458438, WISE J213907.27+222707.9, 2MASS J21390740+2227091
| Parameter | Unit | Stilism | Simbad |
|---|---|---|---|
| Right ascension | 21 39 07.41 (0.04) | ||
| Declination | 22 27 08.94 (0.04) | ||
| Spectral type | D | ||
| 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] | 0.20 (0.05) | |
| Distance | [pc] | 5020.08 (1144) | |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | 1.392 (0.04) | |
| Proper motion (declination) | [mas/yr] | -3.215 (0.04) | |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | 16.25 (0.05) | ||
| V magnitude | 15.91 (0.1) | ||
| R magnitude | |||
| I magnitude | |||
| J magnitude | 15.36 (0.05) | ||
| H magnitude | 15.14 (0.09) | ||
| K magnitude | 14.94 (0.1) | ||
| u magnitude | 16.87 (0.008) | ||
| g magnitude | 16.00 (0.004) | ||
| r magnitude | 15.94 (0.004) | ||
| i magnitude | 15.97 (0.005) | ||
| z magnitude | 15.98 (0.008) | ||
| G magnitude | 15.90 (0.003) | ||
| BP magnitude | |||
| RP magnitude | |||
| Pan g magnitude | |||
| Pan r magnitude | |||
| Pan i magnitude | |||
| Pan z magnitude | |||
| Pan y magnitude | |||
| E(B-V) | 0.064 | ||
* 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.