All names: SDSS J214540.84-012808.7, Gaia DR3 2674696247998989184, FBS 2143-017, LAMOST J214540.83-012808.2, 2MASS J21454084-0128082, FBS2143-017, GALEX J214540.8-012807, TIC 269469865, Gaia DR2 2674696247998989184
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 45 40.84 | 21 45 40.84 (0.04) | ||
| Declination | -01 28 08.25 | -01 28 08.26 (0.04) | ||
| Spectral type | He-sdO | sdOBHe | ||
| Effective temperature | [K] | 50617.0 (749) | ||
| log(g) | [cgs] | 5.90 (0.09) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.37 (0.08) | 0.42 (0.05) | |
| Distance | [pc] | 2720.35 (567) | 2356.82 (285) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.144 (0.1) | 1.019 (0.05) | |
| Proper motion (declination) | [mas/yr] | -11.773 (0.1) | -11.874 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.26 | |||
| V magnitude | 15.70 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.94 (0.07) | 15.94 (0.07) | ||
| H magnitude | 16.37 | |||
| K magnitude | 15.61 | |||
| u magnitude | 14.61 (0.003) | 14.61 (0.003) | ||
| g magnitude | 15.02 (0.003) | 15.02 (0.003) | ||
| r magnitude | 15.49 (0.003) | 15.49 (0.003) | ||
| i magnitude | 15.82 (0.004) | 15.82 (0.004) | ||
| z magnitude | 16.12 (0.007) | 16.12 (0.007) | ||
| G magnitude | 15.26 (0.001) | 15.24 (0.003) | ||
| BP magnitude | 15.04 (0.009) | |||
| RP magnitude | 15.53 (0.004) | |||
| Pan g magnitude | 15.09 (0.005) | |||
| Pan r magnitude | 15.51 (0.001) | |||
| Pan i magnitude | 15.86 (0.002) | |||
| Pan z magnitude | 16.14 (0.005) | |||
| Pan y magnitude | 16.33 (0.01) | |||
| E(B-V) | 0.058 | |||
* 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.