All names: FBS 2123+007, PN G053.9-33.2, 2MASS J21262117+0058343, Gaia DR2 2691081097260836480, PHL4, PHL 4, TIC 352568802, uvby98 610160004, Gaia DR3 2691081097260836480
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 26 21.16 | 21 26 21.17 (0.04) | ||
| Declination | 00 58 35.06 | 00 58 34.22 (0.04) | ||
| Spectral type | sdO | sdO2VIeHe11 | ||
| 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] | 0.52 (0.08) | 0.61 (0.06) | |
| Distance | [pc] | 1925.30 (300) | 1636.39 (151) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -7.593 (0.1) | -7.616 (0.06) | |
| Proper motion (declination) | [mas/yr] | -22.078 (0.1) | -22.062 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.90 | |||
| V magnitude | 14.10 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.00 (0.04) | 15.00 (0.04) | ||
| H magnitude | 15.21 (0.07) | 15.21 (0.07) | ||
| K magnitude | 15.05 (0.2) | 15.05 (0.2) | ||
| u magnitude | 13.55 (0.004) | |||
| g magnitude | ||||
| r magnitude | 14.48 (0.004) | |||
| i magnitude | 14.84 (0.004) | |||
| z magnitude | 15.15 (0.005) | |||
| G magnitude | 14.23 (0.001) | 14.22 (0.003) | ||
| BP magnitude | 13.99 (0.01) | |||
| RP magnitude | 14.54 (0.003) | |||
| Pan g magnitude | 14.06 (0.005) | |||
| Pan r magnitude | 14.52 (0.003) | |||
| Pan i magnitude | 14.88 (0.002) | |||
| Pan z magnitude | 15.16 (0.002) | |||
| Pan y magnitude | 15.36 (0.003) | |||
| E(B-V) | 0.034 | |||
* 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.