All names: TIC 327049438, UCAC4 467-057339, 2MASS J16543846+0318473, GALEX J165438.5+031847, GALEXJ16546+0318, SDSS J165438.45+031847.3, Gaia DR3 4386108121227093888, Gaia DR2 4386108121227093888, UCAC2 32889342
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 16 54 38.52 | 16 54 38.46 (0.03) | ||
| Declination | 03 18 47.82 | 03 18 47.38 (0.02) | ||
| Spectral type | He-sdO | sdOC3VIIHe40 | ||
| 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 (0.07) | 0.44 (0.04) | |
| Distance | [pc] | 1990.45 (288) | 2265.52 (216) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.594 (0.1) | -4.481 (0.04) | |
| Proper motion (declination) | [mas/yr] | -5.638 (0.07) | -5.593 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.87 (0.01) | |||
| V magnitude | 15.04 (0.01) | |||
| R magnitude | 15.49 (0.07) | |||
| I magnitude | ||||
| J magnitude | 15.64 (0.07) | 15.64 (0.07) | ||
| H magnitude | 15.67 (0.1) | 15.67 (0.1) | ||
| K magnitude | 15.69 (0.2) | 15.69 (0.2) | ||
| u magnitude | 14.46 (0.003) | |||
| g magnitude | 14.83 (0.003) | 14.86 (0.01) | ||
| r magnitude | 15.29 (0.003) | 15.20 (0.01) | ||
| i magnitude | 15.62 (0.003) | 15.50 (0.01) | ||
| z magnitude | 15.97 (0.008) | |||
| G magnitude | 15.07 (0.0006) | 15.06 (0.003) | ||
| BP magnitude | 14.85 (0.01) | |||
| RP magnitude | 15.31 (0.002) | |||
| Pan g magnitude | 14.92 (0.002) | |||
| Pan r magnitude | 15.32 (0.002) | |||
| Pan i magnitude | 15.66 (0.002) | |||
| Pan z magnitude | 15.91 (0.004) | |||
| Pan y magnitude | 16.10 (0.01) | |||
| E(B-V) | 0.113 | |||
* 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.