All names: TIC 159409159, FBS 1656+356, PG 1656+356, GALEX J165824.3+353027, Gaia EDR3 1338830783218983552, PG1656+356, WISEA J165824.09+353026.8, SDSS J165824.08+353027.1, USNO-B1.0 1255-00248419, WISE J165824.10+353027.0, Gaia DR3 1338830473983021184, FBS B 588, 2MASS J16582407+3530269, Gaia DR2 1338830473983021184
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 16 58 27.13 (0.3) | 16 58 24.07 | 16 58 24.09 (0.03) | ||
| Declination | 35 30 37.09 (0.4) | 35 30 27.56 | 35 30 27.16 (0.04) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 2.95 (0.4) | 0.05 (0.06) | 0.28 (0.04) | |
| Distance | [pc] | 338.93 (44) | 20576.13 (27223) | 3537.32 (556) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 23.74 (0.4) | 3.399 (0.1) | 3.454 (0.04) | |
| Proper motion (declination) | [mas/yr] | -7.284 (0.4) | -7.634 (0.1) | -7.703 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.30 | ||||
| V magnitude | |||||
| R magnitude | 16.30 | ||||
| I magnitude | |||||
| J magnitude | 16.52 (0.1) | 16.52 (0.1) | |||
| H magnitude | 16.80 | ||||
| K magnitude | 16.09 | ||||
| u magnitude | 15.95 (0.005) | 15.95 (0.005) | |||
| g magnitude | 16.12 (0.004) | 16.12 (0.004) | |||
| r magnitude | 16.56 (0.004) | 16.56 (0.004) | |||
| i magnitude | 16.82 (0.005) | 16.82 (0.005) | |||
| z magnitude | 17.04 (0.01) | 17.04 (0.01) | |||
| G magnitude | 20.02 (0.005) | 16.35 (0.001) | 16.33 (0.003) | ||
| BP magnitude | 20.03 (0.07) | 16.18 (0.01) | |||
| RP magnitude | 20.18 (0.1) | 16.50 (0.006) | |||
| Pan g magnitude | 16.19 (0.002) | ||||
| Pan r magnitude | 16.57 (0.003) | ||||
| Pan i magnitude | 16.84 (0.002) | ||||
| Pan z magnitude | 17.01 (0.004) | ||||
| Pan y magnitude | 17.13 (0.01) | ||||
| E(B-V) | 0.022 | ||||
* 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.