All names: SDSSJ173146.09+073455.3, SDSS J173146.09+073455.3, Gaia EDR3 4487161722377452160, Gaia DR3 4487161722377452160, SDSS J173146.09+073455.2, Gaia DR2 4487161657955329408, Gaia DR3 4487161657955329408, GALEX J173146.1+073454
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|
| Right ascension | 17 31 44.48 (0.2) | 17 31 46.10 | 17 31 44.48 | 17 31 46.10 (0.2) | |
| Declination | 07 36 04.59 (0.2) | 07 34 55.38 | 07 36 04.59 | 07 34 55.23 (0.2) | |
| Spectral type | sdB | DC | sdB | ||
| Effective temperature | [K] | 10733.0 (626) | |||
| log(g) | [cgs] | 7.72 (0.1) | |||
| Mass | [M☉] | 0.432 (0.1) | |||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 3.33 (0.3) | -0.37 (0.4) | 3.33 | 0.17 (0.2) |
| Distance | [pc] | 300.17 (24) | 300.17 | 6060.61 (8882) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 8.291 (0.2) | -2.693 (0.7) | -2.753 (0.2) | |
| Proper motion (declination) | [mas/yr] | 3.328 (0.2) | -5.062 (0.6) | -5.473 (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 | 18.83 (0.02) | 18.83 (0.02) | |||
| g magnitude | 18.93 (0.01) | 18.96 (0.01) | |||
| r magnitude | 19.30 (0.02) | 19.30 (0.01) | |||
| i magnitude | 19.58 (0.03) | 19.62 (0.02) | |||
| z magnitude | 20.00 (0.1) | 20.10 (0.1) | |||
| G magnitude | 19.22 (0.004) | 19.19 (0.004) | 19.22 | 19.14 (0.004) | |
| BP magnitude | 19.26 (0.03) | 19.00 (0.03) | |||
| RP magnitude | 19.15 (0.05) | 19.31 (0.03) | |||
| Pan g magnitude | 19.01 (0.01) | ||||
| Pan r magnitude | 19.37 (0.01) | ||||
| Pan i magnitude | 19.62 (0.01) | ||||
| Pan z magnitude | 19.89 (0.02) | ||||
| Pan y magnitude | 19.86 (0.05) | ||||
| E(B-V) | |||||
* 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.