All names: SDSS J153842.82+093441.9, Gaia DR2 1165071009310870912, SDSS J153842.84+093442.2, Gaia DR3 1165071009310870912, PG1536+097, 2MASS J15384284+0934421, LAMOST J153842.84+093442.2, LAMOST J153842.83+093441.9, TIC 460432137, PG 1536+097A, HS 1536+0944, GALEX J153842.8+093441
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 15 38 42.88 | 15 38 42.86 (0.03) | ||
| Declination | 09 34 42.80 | 09 34 42.36 (0.03) | ||
| Spectral type | He-sdOB+MS | sdB+K0 | ||
| Effective temperature | [K] | 35114.0 (0) | ||
| log(g) | [cgs] | 5.83 (0) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.41 (0.07) | 0.42 (0.04) | |
| Distance | [pc] | 2461.24 (431) | 2381.52 (230) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -32.263 (0.1) | -32.626 (0.04) | |
| Proper motion (declination) | [mas/yr] | -32.836 (0.2) | -32.685 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.60 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.27 (0.05) | 15.27 (0.05) | ||
| H magnitude | 15.02 (0.09) | 15.02 (0.09) | ||
| K magnitude | 14.61 (0.1) | 14.61 (0.1) | ||
| u magnitude | 15.51 (0.005) | 15.51 (0.005) | ||
| g magnitude | 15.65 (0.003) | 15.65 (0.003) | ||
| r magnitude | 15.84 (0.004) | 15.84 (0.004) | ||
| i magnitude | 15.95 (0.004) | 15.95 (0.004) | ||
| z magnitude | 16.03 (0.007) | 16.03 (0.007) | ||
| G magnitude | 15.73 (0.001) | 15.71 (0.003) | ||
| BP magnitude | 15.68 (0.006) | |||
| RP magnitude | 15.64 (0.003) | |||
| Pan g magnitude | 15.70 (0.002) | |||
| Pan r magnitude | 15.86 (0.003) | |||
| Pan i magnitude | 15.98 (0.003) | |||
| Pan z magnitude | 16.04 (0.003) | |||
| Pan y magnitude | 16.09 (0.007) | |||
| E(B-V) | 0.032 | |||
* 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.