All names: 2MASS J08341571+0254209, Gaia DR2 3079803129635422592, GALEX J083415.7+025421, TIC 290438775, SDSSJ083415.72+025421.0, Gaia DR3 3079803129635422592, Gaia EDR3 3079803129635422592, SDSS J083415.72+025421.0
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 08 34 15.72 (0.03) | 08 34 15.72 | 08 34 15.72 (0.03) | ||
| Declination | 02 54 21.16 (0.02) | 02 54 21.09 | 02 54 21.07 (0.02) | ||
| Spectral type | sd | sd | |||
| 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] | 0.84 (0.05) | 0.77 (0.06) | 0.84 (0.05) | |
| Distance | [pc] | 1194.46 (70) | 1298.20 (109) | 1194.46 (70) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -3.374 (0.05) | -3.345 (0.1) | -3.374 (0.05) | |
| Proper motion (declination) | [mas/yr] | 5.818 (0.03) | 5.959 (0.06) | 5.818 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.67 (0.07) | 15.76 (0.007) | |||
| H magnitude | 15.62 (0.1) | 15.88 (0.01) | |||
| K magnitude | 15.41 | 15.95 (0.03) | |||
| u magnitude | 14.60 (0.003) | 14.56 (0.01) | |||
| g magnitude | 14.86 (0.003) | 14.85 (0.009) | |||
| r magnitude | 15.37 (0.004) | 15.32 (0.02) | |||
| i magnitude | 15.71 (0.004) | 15.66 (0.01) | |||
| z magnitude | 16.02 (0.006) | 15.97 (0.01) | |||
| G magnitude | 15.11 (0.003) | 15.12 (0.0007) | 15.11 (0.003) | ||
| BP magnitude | 14.96 (0.004) | 14.90 (0.005) | |||
| RP magnitude | 15.39 (0.004) | 15.38 (0.002) | |||
| Pan g magnitude | 14.94 (0.009) | ||||
| Pan r magnitude | 15.37 (0.001) | ||||
| Pan i magnitude | 15.72 (0.002) | ||||
| Pan z magnitude | 16.00 (0.005) | ||||
| Pan y magnitude | 16.17 (0.01) | ||||
| E(B-V) | 0.028 | ||||
* 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.