All names: 2MASS J16372797+0118190, GALEX J163727.9+011819, Gaia DR3 4384071928771180672, TIC 281792586, Gaia DR2 4384071928771180672, PG 1634+014, Gaia EDR3 4384071928771180672, PG1634+014, UCAC4 457-059467
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 16 37 27.95 (0.05) | 16 37 28.00 | 16 37 27.96 (0.05) | ||
| Declination | 01 18 18.89 (0.03) | 01 18 19.77 | 01 18 18.99 (0.03) | ||
| Spectral type | sdO | sdOA | |||
| 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] | 0.50 (0.06) | 0.56 (0.08) | 0.50 (0.06) | |
| Distance | [pc] | 2007.63 (227) | 1794.04 (243) | 2007.63 (227) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -12.161 (0.07) | -12.418 (0.1) | -12.161 (0.07) | |
| Proper motion (declination) | [mas/yr] | -6.18 (0.05) | -6.052 (0.1) | -6.18 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.00 (0.1) | ||||
| V magnitude | 16.16 (0.1) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.71 (0.1) | 16.71 (0.1) | |||
| H magnitude | 16.23 | ||||
| K magnitude | 16.06 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 16.12 (0.003) | 16.14 (0.001) | 16.12 (0.003) | ||
| BP magnitude | 15.98 (0.004) | 15.90 (0.01) | |||
| RP magnitude | 16.38 (0.006) | 16.36 (0.005) | |||
| Pan g magnitude | 15.95 (0.002) | ||||
| Pan r magnitude | 16.36 (0.004) | ||||
| Pan i magnitude | 16.72 (0.005) | ||||
| Pan z magnitude | 16.97 (0.004) | ||||
| Pan y magnitude | 17.13 (0.008) | ||||
| E(B-V) | 0.083 | ||||
* 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.