All names: Gaia DR3 1338485777087459072, PG1703+355, Gaia EDR3 1338485777087459072, 2MASS J17051523+3528185, GALEX J170515.1+352817, FBS B 592, TIC 21742552, LAMOST J170515.21+352818.5, PG 1703+355, Gaia DR2 1338485777087459072, FBS 1703+355, SDSS J170515.21+352818.5
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 17 05 15.21 (0.03) | 17 05 15.25 | 17 05 15.22 (0.03) | ||
| Declination | 35 28 18.60 (0.03) | 35 28 18.58 | 35 28 18.56 (0.03) | ||
| Spectral type | He-sdO | sdOC | |||
| Effective temperature | [K] | 46503.0 (174) | |||
| log(g) | [cgs] | 6.04 (0.03) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.46 (0.03) | 0.35 (0.04) | 0.46 (0.03) | |
| Distance | [pc] | 2166.85 (153) | 2868.62 (363) | 2166.85 (153) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -8.698 (0.04) | -8.707 (0.08) | -8.698 (0.04) | |
| Proper motion (declination) | [mas/yr] | 2.527 (0.04) | 2.576 (0.09) | 2.527 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.45 | ||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.26 (0.08) | 16.26 (0.08) | |||
| H magnitude | 16.15 (0.2) | 16.15 (0.2) | |||
| K magnitude | 15.66 | ||||
| u magnitude | 14.89 (0.004) | 14.90 (0.02) | |||
| g magnitude | 15.30 (0.003) | 15.34 (0.01) | |||
| r magnitude | 15.82 (0.004) | 15.82 (0.01) | |||
| i magnitude | 16.19 (0.005) | 16.18 (0.01) | |||
| z magnitude | 16.51 (0.008) | 16.52 (0.02) | |||
| G magnitude | 15.57 (0.003) | 15.58 (0.001) | 15.57 (0.003) | ||
| BP magnitude | 15.41 (0.004) | 15.35 (0.007) | |||
| RP magnitude | 15.88 (0.005) | 15.87 (0.003) | |||
| Pan g magnitude | 15.40 (0.002) | ||||
| Pan r magnitude | 15.83 (0.002) | ||||
| Pan i magnitude | 16.21 (0.001) | ||||
| Pan z magnitude | 16.50 (0.003) | ||||
| Pan y magnitude | 16.70 (0.008) | ||||
| E(B-V) | 0.023 | ||||
* 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.