All names: UCAC4 636-107566, LAMOST J210926.92+370822.7, 2MASS J21092694+3708229, Gaia DR3 1868767831308190976, Gaia EDR3 1868767831308190976, LAMOSTJ210926.94+370822.8, Gaia DR2 1868767831308190976
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 09 26.92 (0.02) | 21 09 26.93 | 21 09 26.94 (0.02) | ||
| Declination | 37 08 22.77 (0.03) | 37 08 22.79 | 37 08 22.89 (0.03) | ||
| Spectral type | sdO | sdO | |||
| Effective temperature | [K] | 50100.0 (1630) | |||
| log(g) | [cgs] | 5.53 (0.04) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.73 (0.03) | 0.71 (0.05) | 0.73 (0.03) | |
| Distance | [pc] | 1376.84 (60) | 1417.03 (97) | 1376.84 (60) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -11.791 (0.03) | -11.766 (0.07) | -11.791 (0.03) | |
| Proper motion (declination) | [mas/yr] | -7.653 (0.03) | -7.731 (0.09) | -7.653 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.02 (0.1) | ||||
| V magnitude | 15.06 (0.08) | ||||
| R magnitude | 15.69 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 15.84 (0.08) | 15.84 (0.08) | |||
| H magnitude | 15.92 (0.1) | 15.92 (0.1) | |||
| K magnitude | 15.48 | ||||
| u magnitude | |||||
| g magnitude | 14.91 (0.04) | ||||
| r magnitude | 14.85 (0.04) | ||||
| i magnitude | 14.74 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 15.27 (0.003) | 15.28 (0.0006) | 15.27 (0.003) | ||
| BP magnitude | 15.14 (0.003) | 15.08 (0.007) | |||
| RP magnitude | 15.51 (0.004) | 15.51 (0.003) | |||
| Pan g magnitude | 15.13 (0.001) | ||||
| Pan r magnitude | 15.52 (0.003) | ||||
| Pan i magnitude | 15.85 (0.0005) | ||||
| Pan z magnitude | 16.11 (0.003) | ||||
| Pan y magnitude | 16.28 (0.005) | ||||
| E(B-V) | 0.138 | ||||
* 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.