All names: 2MASS J17554857+5012116, TIC 356370600, GALEX J175548.4+501210, TYC 3519-907-1, Gaia DR3 1364478541203752192, Gaia DR2 1364478541203752192, GALEXJ17558+5012, GALEX J175548.5+501210
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 55 48.49 | 17 55 48.57 (0.03) | ||
| Declination | 50 12 10.83 | 50 12 11.59 (0.03) | ||
| Spectral type | He-sdO | sdOHe | ||
| Effective temperature | [K] | 40370.0 (940) | ||
| log(g) | [cgs] | 5.96 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.86 (0.04) | 1.74 (0.03) | |
| Distance | [pc] | 538.71 (11) | 573.99 (11) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -7.529 (0.07) | -7.714 (0.04) | |
| Proper motion (declination) | [mas/yr] | 23.366 (0.08) | 23.568 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 12.59 (0.2) | |||
| V magnitude | 13.00 (0.3) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 13.57 (0.03) | 13.57 (0.03) | ||
| H magnitude | 13.73 (0.04) | 13.73 (0.04) | ||
| K magnitude | 13.84 (0.05) | 13.84 (0.05) | ||
| u magnitude | 14.11 (0.01) | |||
| g magnitude | ||||
| r magnitude | 13.21 (0.002) | |||
| i magnitude | 13.64 (0.002) | |||
| z magnitude | 14.06 (0.007) | |||
| G magnitude | 12.88 (0.0008) | 12.86 (0.003) | ||
| BP magnitude | 12.64 (0.007) | |||
| RP magnitude | 13.17 (0.001) | |||
| Pan g magnitude | 12.62 | |||
| Pan r magnitude | 13.13 | |||
| Pan i magnitude | 13.53 (0.003) | |||
| Pan z magnitude | 13.79 (0.003) | |||
| Pan y magnitude | 14.00 (0.005) | |||
| E(B-V) | 0.030 | |||
* 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.