All names: WISEA J170531.61+742059.9, UCAC4 822-020027, 2MASS J17053166+7420598, HS1706+7424, TIC 441726186, HS 1706+7424, SDSS J170531.65+742059.8, Gaia EDR3 1655490716133145216, Gaia DR3 1655490716133145216, Gaia DR2 1655490716133145216, WISE J170531.63+742059.9, SDSS J170531.65+742059.9, GALEX J170531.5+742059
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 17 05 31.65 (0.03) | 17 05 31.72 | 17 05 31.65 (0.03) | ||
| Declination | 74 20 59.84 (0.03) | 74 21 00.14 | 74 20 59.88 (0.03) | ||
| Spectral type | sdO | sdO | |||
| 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] | 0.70 (0.03) | 0.70 (0.05) | 0.70 (0.03) | |
| Distance | [pc] | 1429.18 (62) | 1418.44 (98) | 1429.18 (62) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.121 (0.04) | -1.293 (0.08) | -1.121 (0.04) | |
| Proper motion (declination) | [mas/yr] | -2.442 (0.04) | -2.365 (0.1) | -2.442 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.49 (0.1) | ||||
| V magnitude | 14.52 (0.03) | ||||
| R magnitude | 15.01 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 15.34 (0.05) | 15.34 (0.05) | |||
| H magnitude | 15.51 (0.1) | 15.51 (0.1) | |||
| K magnitude | 15.61 | ||||
| u magnitude | 14.05 (0.004) | ||||
| g magnitude | 14.39 (0.004) | 14.49 (0.1) | |||
| r magnitude | 14.85 (0.005) | 14.74 (0.07) | |||
| i magnitude | 15.23 (0.005) | 15.16 (0.1) | |||
| z magnitude | 15.53 (0.007) | ||||
| G magnitude | 14.64 (0.003) | 14.65 (0.0007) | 14.64 (0.003) | ||
| BP magnitude | 14.48 (0.003) | 14.39 (0.01) | |||
| RP magnitude | 14.93 (0.004) | 14.93 (0.003) | |||
| Pan g magnitude | 14.46 (0.001) | ||||
| Pan r magnitude | 14.90 (0.002) | ||||
| Pan i magnitude | 15.27 (0.005) | ||||
| Pan z magnitude | 15.55 (0.01) | ||||
| Pan y magnitude | 15.78 (0.01) | ||||
| E(B-V) | 0.027 | ||||
* 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.