All names: 2MASS J08345278-0423301, UCAC4 429-045728, Gaia DR2 3065536141631423104, SDSS J083452.77-042330.2, GALEX J083452.7-042330, Gaia DR3 3065536141631423104, SDSSJ083452.77-042330.2
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 34 52.78 | 08 34 52.78 (0.02) | ||
| Declination | -04 23 30.23 | -04 23 30.18 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.04 (0.06) | 0.15 (0.03) | |
| Distance | [pc] | 28571.43 (46531) | 6553.08 (1254) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.576 (0.09) | -0.59 (0.03) | |
| Proper motion (declination) | [mas/yr] | -1.121 (0.1) | -1.202 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.04 (0.05) | |||
| V magnitude | 14.05 (0.02) | |||
| R magnitude | 14.39 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.28 (0.03) | 14.28 (0.03) | ||
| H magnitude | 14.27 (0.04) | 14.27 (0.04) | ||
| K magnitude | 14.33 (0.08) | 14.33 (0.08) | ||
| u magnitude | 14.31 (0.003) | 14.31 (0.003) | ||
| g magnitude | 13.86 (0.003) | 13.98 (0.01) | ||
| r magnitude | 14.22 (0.003) | 14.16 (0.06) | ||
| i magnitude | 14.48 (0.004) | 14.28 (0.01) | ||
| z magnitude | 14.71 (0.005) | 14.71 (0.005) | ||
| G magnitude | 14.06 (0.0004) | 14.04 (0.003) | ||
| BP magnitude | 13.96 (0.005) | |||
| RP magnitude | 14.15 (0.001) | |||
| Pan g magnitude | 13.93 (0.006) | |||
| Pan r magnitude | 14.22 (0.004) | |||
| Pan i magnitude | 14.49 (0.006) | |||
| Pan z magnitude | 14.67 (0.004) | |||
| Pan y magnitude | 14.79 (0.006) | |||
| E(B-V) | 0.030 | |||
* 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.