All names: GALEX J153740.3-170215, 2MASS J15374033-1702153, GALEXJ15376-1702, EC 15348-1652, Gaia DR2 6261454085781366016, Gaia DR3 6261454085781366016, TIC 387046439
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 15 37 40.30 | 15 37 40.33 (0.04) | ||
| Declination | -17 02 15.03 | -17 02 15.32 (0.03) | ||
| Spectral type | He-sdO | sdO8VIIHe39 | ||
| 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] | 0.48 (0.1) | 0.55 (0.04) | |
| Distance | [pc] | 2090.74 (441) | 1826.82 (139) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -5.362 (0.1) | -5.437 (0.05) | |
| Proper motion (declination) | [mas/yr] | -6.916 (0.1) | -6.721 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.89 | |||
| V magnitude | 15.14 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.77 (0.07) | 15.77 (0.07) | ||
| H magnitude | 15.71 (0.1) | 15.71 (0.1) | ||
| K magnitude | 15.67 (0.3) | 15.67 (0.3) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.10 (0.0009) | 15.09 (0.003) | ||
| BP magnitude | 14.90 (0.01) | |||
| RP magnitude | 15.32 (0.004) | |||
| Pan g magnitude | 14.96 (0.003) | |||
| Pan r magnitude | 15.34 (0.003) | |||
| Pan i magnitude | 15.66 (0.002) | |||
| Pan z magnitude | 15.92 (0.004) | |||
| Pan y magnitude | 16.09 (0.005) | |||
| E(B-V) | 0.104 | |||
* 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.