All names: 2MASS J09150709+1847161, PG 0912+189, PG0912+189, Gaia DR3 635660764741010304, Gaia DR2 635660764741010304, TIC 85996921, GALEX J091507.1+184716, LAMOST J091507.08+184716.2
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 09 15 07.09 | 09 15 07.10 (0.06) | ||
| Declination | 18 47 16.59 | 18 47 16.35 (0.06) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 27960.0 (311) | ||
| log(g) | [cgs] | 5.37 (0.06) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.29 (0.09) | 0.34 (0.05) | |
| Distance | [pc] | 3412.97 (1006) | 2960.33 (478) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.726 (0.2) | 0.923 (0.07) | |
| Proper motion (declination) | [mas/yr] | -6.054 (0.3) | -6.205 (0.07) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.50 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.42 (0.1) | 16.42 (0.1) | ||
| H magnitude | 16.18 (0.2) | 16.18 (0.2) | ||
| K magnitude | 17.56 | |||
| u magnitude | 15.49 (0.005) | |||
| g magnitude | 15.58 (0.004) | |||
| r magnitude | 16.07 (0.005) | |||
| i magnitude | 16.39 (0.005) | |||
| z magnitude | 16.70 (0.01) | |||
| G magnitude | 15.88 (0.001) | 15.86 (0.003) | ||
| BP magnitude | 15.69 (0.006) | |||
| RP magnitude | 16.09 (0.003) | |||
| Pan g magnitude | 15.70 (0.004) | |||
| Pan r magnitude | 16.08 (0.002) | |||
| Pan i magnitude | 16.42 (0.004) | |||
| Pan z magnitude | 16.71 (0.006) | |||
| Pan y magnitude | 16.86 (0.007) | |||
| E(B-V) | 0.030 | |||
* 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.