All names: WISEA J214600.31+372119.7, Gaia DR2 1952553606634620928, LAMOSTJ214600.31+372119.7, WISE J214600.31+372119.8, 2MASS J21460031+3721200, TIC 407657360, UCAC4 637-113968, Gaia DR3 1952553606634620928, LAMOST J214600.31+372119.7
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 46 00.31 | 21 46 00.31 (0.01) | ||
| Declination | 37 21 19.76 | 37 21 19.81 (0.02) | ||
| Spectral type | He-sdO | sdOHe | ||
| Effective temperature | [K] | 53424.0 (419) | ||
| log(g) | [cgs] | 5.87 (0.05) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.92 (0.03) | 0.93 (0.02) | |
| Distance | [pc] | 1085.54 (37) | 1078.05 (25) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.638 (0.04) | 2.554 (0.02) | |
| Proper motion (declination) | [mas/yr] | -9.604 (0.05) | -9.521 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.73 (0.04) | |||
| V magnitude | 14.67 (0.05) | |||
| R magnitude | 14.80 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.75 (0.05) | 14.75 (0.05) | ||
| H magnitude | 14.79 (0.09) | 14.79 (0.09) | ||
| K magnitude | 14.96 (0.1) | 14.96 (0.1) | ||
| u magnitude | ||||
| g magnitude | 14.62 (0.03) | |||
| r magnitude | 14.78 (0.04) | |||
| i magnitude | 14.96 (0.08) | |||
| z magnitude | ||||
| G magnitude | 14.66 (0.0004) | 14.64 (0.003) | ||
| BP magnitude | 14.61 (0.005) | |||
| RP magnitude | 14.62 (0.002) | |||
| Pan g magnitude | 14.64 (0.002) | |||
| Pan r magnitude | 14.79 (0.003) | |||
| Pan i magnitude | 14.95 (0.002) | |||
| Pan z magnitude | 15.13 (0.002) | |||
| Pan y magnitude | 15.23 (0.01) | |||
| E(B-V) | 0.159 | |||
* 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.