All names: Gaia DR2 4598253667125626880, SDSS J172436.20+275242.0, SDSSJ172436.21+275242.0, 2MASS J17243619+2752428, GALEX J172436.2+275241, Gaia DR3 4598253667125626880, TIC 313611027
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 24 36.21 | 17 24 36.21 (0.04) | ||
| Declination | 27 52 42.00 | 27 52 42.05 (0.05) | ||
| Spectral type | sdOB | sdBC0.2He25+G/K | ||
| Effective temperature | [K] | 39455.0 (934) | ||
| log(g) | [cgs] | 5.45 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.17 (0.08) | 0.27 (0.06) | |
| Distance | [pc] | 5841.12 (2794) | 3724.39 (818) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 4.326 (0.1) | 4.314 (0.05) | |
| Proper motion (declination) | [mas/yr] | -9.36 (0.1) | -9.35 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.97 (0.1) | 16.97 (0.1) | ||
| H magnitude | 16.47 (0.3) | 16.47 (0.3) | ||
| K magnitude | 16.20 | |||
| u magnitude | 16.78 (0.007) | 16.77 (0.007) | ||
| g magnitude | 16.92 (0.004) | 16.92 (0.004) | ||
| r magnitude | 17.20 (0.005) | 17.21 (0.005) | ||
| i magnitude | 17.37 (0.006) | 17.37 (0.006) | ||
| z magnitude | 17.52 (0.02) | 17.52 (0.02) | ||
| G magnitude | 17.07 (0.001) | 17.04 (0.003) | ||
| BP magnitude | 16.96 (0.007) | |||
| RP magnitude | 17.06 (0.01) | |||
| Pan g magnitude | 16.98 (0.004) | |||
| Pan r magnitude | 17.22 (0.002) | |||
| Pan i magnitude | 17.39 (0.004) | |||
| Pan z magnitude | 17.53 (0.008) | |||
| Pan y magnitude | 17.60 (0.01) | |||
| E(B-V) | 0.032 | |||
* 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.