All names: SDSS J170255.02+431518.5, Gaia DR2 1355379253553887616, SDSS J170255.02+431518.6, Gaia DR3 1355379253553887616, GALEX J170255.0+431518, Gaia EDR3 1355379253553887616
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 02 55.02 (0.3) | 17 02 55.03 (0.3) | ||
| Declination | 43 15 18.81 (0.3) | 43 15 18.63 (0.3) | ||
| Spectral type | DB | |||
| 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] | 1.87 (0.4) | 1.87 (0.4) | |
| Distance | [pc] | 533.65 (101) | 533.65 (101) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -11.864 (0.5) | -11.864 (0.5) | |
| Proper motion (declination) | [mas/yr] | 11.281 (0.5) | 11.281 (0.5) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 19.79 (0.04) | |||
| g magnitude | 19.93 (0.02) | |||
| r magnitude | 20.14 (0.02) | |||
| i magnitude | 20.35 (0.04) | |||
| z magnitude | 20.64 (0.2) | |||
| G magnitude | 20.00 (0.005) | 20.00 (0.005) | ||
| BP magnitude | 19.94 (0.05) | |||
| RP magnitude | 19.98 (0.09) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.025 | |||
* 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.