All names: SDSSJ191726.13+791741.3, SDSS J191726.17+791741.4, Gaia DR3 2294708568494161408, Gaia DR2 2294708564197820672, SDSS J191726.15+791741.3, Gaia EDR3 2294708568494161408
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 19 17 26.16 (0.05) | 19 17 26.13 | 19 17 26.17 (0.05) | ||
| Declination | 79 17 41.48 (0.05) | 79 17 41.30 | 79 17 41.48 (0.05) | ||
| Spectral type | sdOB | sdOB | |||
| Effective temperature | [K] | 35455.0 (935) | |||
| log(g) | [cgs] | 5.85 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.44 (0.05) | 0.44 (0.06) | 0.44 (0.05) | |
| Distance | [pc] | 2253.78 (274) | 2247.70 (327) | 2253.78 (274) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.849 (0.07) | -2.948 (0.1) | -2.849 (0.07) | |
| Proper motion (declination) | [mas/yr] | 0.299 (0.07) | 0.643 (0.1) | 0.299 (0.07) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 16.50 (0.007) | 16.50 (0.007) | |||
| g magnitude | 16.69 (0.004) | 16.69 (0.004) | |||
| r magnitude | 17.10 (0.005) | 17.10 (0.005) | |||
| i magnitude | 17.41 (0.007) | 17.41 (0.007) | |||
| z magnitude | 17.70 (0.02) | 17.63 (0.02) | |||
| G magnitude | 16.93 (0.003) | 16.95 (0.001) | 16.93 (0.003) | ||
| BP magnitude | 16.82 (0.009) | 16.77 (0.01) | |||
| RP magnitude | 17.12 (0.008) | 17.16 (0.01) | |||
| Pan g magnitude | 16.81 (0.002) | ||||
| Pan r magnitude | 17.14 (0.003) | ||||
| Pan i magnitude | 17.45 (0.003) | ||||
| Pan z magnitude | 17.70 (0.005) | ||||
| Pan y magnitude | 17.85 (0.02) | ||||
| E(B-V) | 0.104 | ||||
* 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.