All names: TIC 372246008, UCAC4 648-107111, LAMOST J213920.03+393248.8, LAMOSTJ213920.03+393248.8, 2MASS J21392003+3932489, Gaia DR3 1953965379566626816, WISEA J213919.89+393248.7, WISE J213919.92+393248.9, Gaia DR2 1953965379566626816
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 39 20.03 | 21 39 20.04 (0.02) | ||
| Declination | 39 32 48.90 | 39 32 48.99 (0.02) | ||
| Spectral type | He-sdO | sdOBHe | ||
| Effective temperature | [K] | 50071.0 (259) | ||
| log(g) | [cgs] | 5.78 (0.04) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.84 (0.04) | 0.84 (0.03) | |
| Distance | [pc] | 1192.46 (51) | 1191.75 (38) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -5.083 (0.05) | -4.93 (0.02) | |
| Proper motion (declination) | [mas/yr] | -7.8 (0.06) | -7.79 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.70 (0.09) | |||
| V magnitude | 14.71 (0.09) | |||
| R magnitude | 15.04 (0.08) | |||
| I magnitude | ||||
| J magnitude | 14.90 (0.05) | 14.90 (0.05) | ||
| H magnitude | 15.16 (0.1) | 15.16 (0.1) | ||
| K magnitude | 14.84 (0.1) | 14.84 (0.1) | ||
| u magnitude | ||||
| g magnitude | 14.61 (0.07) | |||
| r magnitude | 14.85 (0.06) | |||
| i magnitude | 15.05 (0.06) | |||
| z magnitude | ||||
| G magnitude | 14.73 (0.0005) | 14.71 (0.003) | ||
| BP magnitude | 14.63 (0.005) | |||
| RP magnitude | 14.77 (0.003) | |||
| Pan g magnitude | 14.68 (0.002) | |||
| Pan r magnitude | 14.87 (0.003) | |||
| Pan i magnitude | 15.12 (0.004) | |||
| Pan z magnitude | 15.31 (0.003) | |||
| Pan y magnitude | 15.42 (0.003) | |||
| E(B-V) | 0.219 | |||
* 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.