All names: Gaia DR2 3297382152761969920, SDSS J041720.64+070814.9, Gaia DR3 3297382152761969920, TIC 283866221, SDSS J041720.64+070815.0, GALEX J041720.6+070816, 2MASS J04172065+0708150, SDSSJ041720.64+070814.9
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 17 20.65 | 04 17 20.65 (0.03) | ||
| Declination | 07 08 15.00 | 07 08 15.07 (0.02) | ||
| Spectral type | sdB+MS | 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] | 0.22 (0.06) | 0.19 (0.04) | |
| Distance | [pc] | 4446.42 (1133) | 5364.81 (1048) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.534 (0.1) | -0.548 (0.04) | |
| Proper motion (declination) | [mas/yr] | -0.72 (0.07) | -0.863 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.45 (0.04) | 15.45 (0.04) | ||
| H magnitude | 15.58 (0.1) | 15.58 (0.1) | ||
| K magnitude | 15.49 (0.1) | 15.49 (0.1) | ||
| u magnitude | 15.96 (0.006) | 15.96 (0.006) | ||
| g magnitude | 15.50 (0.004) | 15.50 (0.004) | ||
| r magnitude | 15.65 (0.004) | 15.65 (0.004) | ||
| i magnitude | 15.79 (0.005) | 15.79 (0.005) | ||
| z magnitude | 15.93 (0.007) | 15.93 (0.007) | ||
| G magnitude | 15.58 (0.001) | 15.56 (0.003) | ||
| BP magnitude | 15.58 (0.006) | |||
| RP magnitude | 15.50 (0.005) | |||
| Pan g magnitude | 15.54 (0.005) | |||
| Pan r magnitude | 15.67 (0.002) | |||
| Pan i magnitude | 15.85 (0.002) | |||
| Pan z magnitude | 15.97 (0.005) | |||
| Pan y magnitude | 16.02 (0.003) | |||
| E(B-V) | 0.222 | |||
* 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.