All names: Gaia DR3 658178762878529024, 2MASS J08412271+1617344, SDSS J084122.72+161734.3, HIDDEN NAME PG 0838+164, PG0838+164, PG 0838+165, Gaia DR2 658178762878529024, TIC 337631582, GALEX J084122.7+161734
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 41 22.75 | 08 41 22.72 (0.04) | ||
| Declination | 16 17 34.34 | 16 17 34.37 (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] | 0.39 (0.06) | 0.64 (0.05) | |
| Distance | [pc] | 2537.43 (411) | 1560.06 (119) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.964 (0.1) | -2.809 (0.05) | |
| Proper motion (declination) | [mas/yr] | 1.242 (0.07) | 1.029 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.90 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.28 (0.1) | 16.28 (0.1) | ||
| H magnitude | 15.76 | |||
| K magnitude | 15.38 | |||
| u magnitude | 14.90 (0.004) | 14.93 (0.02) | ||
| g magnitude | 15.24 (0.004) | 15.28 (0.01) | ||
| r magnitude | 15.79 (0.005) | 15.79 (0.01) | ||
| i magnitude | 16.15 (0.005) | 16.15 (0.02) | ||
| z magnitude | 16.50 (0.009) | 16.49 (0.01) | ||
| G magnitude | 15.54 (0.0006) | 15.53 (0.003) | ||
| BP magnitude | 15.30 (0.006) | |||
| RP magnitude | 15.83 (0.003) | |||
| Pan g magnitude | 15.35 (0.003) | |||
| Pan r magnitude | 15.79 (0.005) | |||
| Pan i magnitude | 16.16 (0.005) | |||
| Pan z magnitude | 16.46 (0.007) | |||
| Pan y magnitude | 16.64 (0.01) | |||
| 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.