All names: UCAC4 451-072127, LAMOSTJ174956.05+000636.1, TIC 324295094, Gaia DR2 4371689194462064768, LAMOST J174956.05+000636.1, WISEA J174956.06+000636.2, WISE J174956.06+000636.2, Gaia DR3 4371689194462064768, GALEX J174956.0+000636, 2MASS J17495603+0006363
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 49 56.05 | 17 49 56.05 (0.02) | ||
| Declination | 00 06 36.13 | 00 06 36.17 (0.02) | ||
| Spectral type | sdB | sdOB | ||
| Effective temperature | [K] | 32600.0 (100) | ||
| log(g) | [cgs] | 5.89 (0.01) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.87 (0.05) | 1.95 (0.02) | |
| Distance | [pc] | 533.39 (13) | 513.35 (6) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 14.816 (0.09) | 14.791 (0.02) | |
| Proper motion (declination) | [mas/yr] | -1.5 (0.07) | -1.402 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.53 (0.07) | |||
| V magnitude | 14.44 (0.08) | |||
| R magnitude | 14.56 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.23 (0.03) | 14.23 (0.03) | ||
| H magnitude | 14.27 (0.05) | 14.27 (0.05) | ||
| K magnitude | 14.15 (0.08) | 14.15 (0.08) | ||
| u magnitude | ||||
| g magnitude | 14.39 (0.02) | |||
| r magnitude | 14.48 (0.04) | |||
| i magnitude | 14.45 (0.06) | |||
| z magnitude | ||||
| G magnitude | 14.36 (0.0006) | 14.34 (0.003) | ||
| BP magnitude | 14.33 (0.01) | |||
| RP magnitude | 14.28 (0.002) | |||
| Pan g magnitude | 14.36 (0.004) | |||
| Pan r magnitude | 14.46 (0.007) | |||
| Pan i magnitude | 14.62 (0.001) | |||
| Pan z magnitude | 14.75 (0.002) | |||
| Pan y magnitude | 14.87 (0.007) | |||
| E(B-V) | 0.257 | |||
* 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.