All names: UCAC4 523-142943, GALEX J211041.4+142559, GALEX J211041.3+142559, HS 2108+1413, UCAC2 36916946, 2MASS J21104139+1425587, GSC2 N0313222459, UCAC3 209-299760, LAMOST J211041.38+142558.9, USNO-A2.0 0975-20098604, GALEXJ21106+1425, TIC 126003408, Gaia DR3 1759968097711823232, Gaia DR2 1759968097711823232, GSC2.3 N2QY000459
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 10 41.40 | 21 10 41.39 (0.03) | ||
| Declination | 14 25 58.94 | 14 25 58.93 (0.02) | ||
| Spectral type | He-sdO | sdOHe | ||
| Effective temperature | [K] | 44470.0 (650) | ||
| log(g) | [cgs] | 6.23 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.89 (0.05) | 0.94 (0.04) | |
| Distance | [pc] | 1120.32 (66) | 1061.35 (41) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.955 (0.1) | -3.937 (0.03) | |
| Proper motion (declination) | [mas/yr] | -8.25 (0.09) | -8.003 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.04 (0.01) | |||
| V magnitude | 14.03 | |||
| R magnitude | 14.99 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.74 (0.04) | 14.74 (0.04) | ||
| H magnitude | 14.90 (0.08) | 14.90 (0.08) | ||
| K magnitude | 15.07 (0.2) | 15.07 (0.2) | ||
| u magnitude | ||||
| g magnitude | 14.10 (0.01) | |||
| r magnitude | 14.43 (0.01) | |||
| i magnitude | 14.81 (0.01) | |||
| z magnitude | ||||
| G magnitude | 14.19 (0.0006) | 14.18 (0.003) | ||
| BP magnitude | 13.98 (0.01) | |||
| RP magnitude | 14.42 (0.003) | |||
| Pan g magnitude | 14.05 (0.002) | |||
| Pan r magnitude | 14.42 (0.002) | |||
| Pan i magnitude | 14.76 (0.002) | |||
| Pan z magnitude | 15.02 (0.004) | |||
| Pan y magnitude | 15.21 (0.006) | |||
| E(B-V) | 0.066 | |||
* 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.