All names: SDSS J170448.32+425038.18, Gaia DR2 1355124166856796544, Gaia DR3 1355124166856796544, ZTF J170448.33+425038.1, SDSS J170448.32+425038.1, Gaia EDR3 1355124166856796544
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 04 48.33 (0.1) | 17 04 48.32 | 17 04 48.33 (0.2) | 17 04 48.33 (0.1) | ||||
| Declination | 42 50 38.16 (0.2) | 42 50 38.15 | 42 50 38.16 (0.2) | 42 50 38.13 (0.2) | ||||
| Spectral type | sdA | sdA | ||||||
| Effective temperature | [K] | 7239.0 (64) | ||||||
| log(g) | [cgs] | 5.94 (0.2) | ||||||
| Mass | [M☉] | 0.15144 (0.0008) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.16 (0.2) | 0.28 (0.2) | 0.16 (0.2) | ||||
| Distance | [pc] | 6228.43 (7097) | 3594.67 (3184) | 6226.65 (7091) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -3.034657568 (0.2) | -2.639576653 (0.4) | -3.035 (0.2) | ||||
| Proper motion (declination) | [mas/yr] | 2.157249653 (0.2) | 2.212870453 (0.5) | 2.157 (0.2) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 20.25 (0.04) | 20.24 (0.05) | 20.24 (0.05) | |||||
| g magnitude | 19.23 (0.01) | 19.23 (0.02) | 19.23 (0.02) | |||||
| r magnitude | 19.07 (0.01) | 19.07 (0.02) | 19.07 (0.02) | |||||
| i magnitude | 19.03 (0.01) | 19.05 (0.02) | 19.05 (0.02) | |||||
| z magnitude | 19.06 (0.04) | 19.05 (0.04) | 19.05 (0.04) | |||||
| G magnitude | 19.02 (0.03) | 19.04 | 19.02 (0.006) | |||||
| BP magnitude | 19.30 (0.03) | 19.26 | ||||||
| RP magnitude | 18.68 (0.03) | 18.70 | ||||||
| Pan g magnitude | 19.19 (0.01) | |||||||
| Pan r magnitude | 19.13 (0.01) | |||||||
| Pan i magnitude | 19.03 (0.01) | |||||||
| Pan z magnitude | 19.01 (0.01) | |||||||
| Pan y magnitude | 19.09 (0.05) | |||||||
| E(B-V) | 0.026 | |||||||
* 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.