All names: DENIS J082053.5+000843, SDSS J082053.53+000843.4, UCAC2 31856417, ATO J125.2230+00.1454, GALEX J082053.6+000843, SDSSJ082053.53+000843.4, Gaia EDR3 3077510098136276480, Gaia DR3 3077510098136276480, 2MASS J08205354+0008434, USNO-B1.0 0901-00164481, PPMX J082053.5+000843, TIC 455206965, LAMOST J082053.61+000843.8, GSC 00196-00617, UCAC3 181-98349, Gaia DR2 3077510098136276480
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 08 20 53.54 (0.03) | 08 20 53.53 | 08 20 53.54 (0.03) | ||
| Declination | 00 08 43.47 (0.02) | 00 08 43.40 | 00 08 43.50 (0.02) | ||
| Spectral type | sdB+BD | sdB | |||
| Effective temperature | [K] | 26700.0 (900) | |||
| log(g) | [cgs] | 5.48 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.66 (0.05) | 0.66 (0.06) | 0.66 (0.05) | |
| Distance | [pc] | 1523.00 (111) | 1513.09 (145) | 1523.00 (111) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 0.523 (0.05) | 0.567 (0.1) | 0.523 (0.05) | |
| Proper motion (declination) | [mas/yr] | -2.242 (0.03) | -2.1 (0.06) | -2.242 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.03 (0.05) | ||||
| V magnitude | 15.17 (0.05) | ||||
| R magnitude | 15.54 | ||||
| I magnitude | 15.91 (0.05) | ||||
| J magnitude | 15.74 (0.08) | 15.74 (0.08) | |||
| H magnitude | 15.73 (0.1) | 15.73 (0.1) | |||
| K magnitude | 15.65 | 15.65 | |||
| u magnitude | 14.81 (0.003) | 14.81 (0.003) | |||
| g magnitude | 14.91 (0.003) | 14.91 (0.003) | |||
| r magnitude | 15.37 (0.003) | 15.37 (0.003) | |||
| i magnitude | 15.70 (0.004) | 15.70 (0.004) | |||
| z magnitude | 15.99 (0.007) | 15.99 (0.007) | |||
| G magnitude | 15.16 (0.003) | 15.18 (0.002) | 15.16 (0.003) | ||
| BP magnitude | 15.04 (0.005) | 15.00 (0.009) | |||
| RP magnitude | 15.39 (0.006) | 15.39 (0.007) | |||
| Pan g magnitude | 15.01 (0.01) | ||||
| Pan r magnitude | 15.36 (0.002) | ||||
| Pan i magnitude | 15.72 (0.01) | ||||
| Pan z magnitude | 15.99 (0.01) | ||||
| Pan y magnitude | 16.10 (0.01) | ||||
| E(B-V) | 0.031 | ||||
* 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.