All names: PM J20223+8333, USNO-B1.0 1735-00035396, NLTT 49358, Gaia DR2 2302010356492847744, LP 10-382, LSPM J2022+8333, 2MASS J20222151+8333556
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 20 22 21.70 (0.07) | |
| Declination | 83 33 55.41 (0.09) | |
| Spectral type | DC | |
| 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] | 25.98 (0.08) |
| Distance | [pc] | 38.49 (0.1) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | -122.842 (0.1) |
| Proper motion (declination) | [mas/yr] | 172.785 (0.2) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 17.50 | |
| V magnitude | ||
| R magnitude | 16.80 | |
| I magnitude | ||
| J magnitude | 16.16 (0.1) | |
| H magnitude | 16.40 (0.3) | |
| K magnitude | ||
| u magnitude | ||
| g magnitude | ||
| r magnitude | ||
| i magnitude | ||
| z magnitude | ||
| G magnitude | 17.21 (0.001) | |
| BP magnitude | ||
| RP magnitude | ||
| Pan g magnitude | ||
| Pan r magnitude | ||
| Pan i magnitude | ||
| Pan z magnitude | ||
| Pan y magnitude |
* 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 (LANL). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.