All names: TIC 12173009, EC15050-2017, EC 15050-2017, 2MASS J15075254-2029021, GALEX J150752.5-202904, Gaia DR2 6255905537785699584, Gaia DR3 6255905537785699584
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 15 07 52.51 | 15 07 52.55 (0.05) | ||
| Declination | -20 29 01.47 | -20 29 02.20 (0.04) | ||
| Spectral type | sdB | sdB | ||
| 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] | 0.75 (0.1) | 0.84 (0.06) | |
| Distance | [pc] | 1332.98 (261) | 1195.46 (88) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -41.313 (0.2) | -41.436 (0.06) | |
| Proper motion (declination) | [mas/yr] | -9.112 (0.1) | -9.74 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.19 | |||
| V magnitude | 15.44 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.26 (0.06) | 15.26 (0.06) | ||
| H magnitude | 15.24 (0.09) | 15.24 (0.09) | ||
| K magnitude | 15.21 (0.2) | 15.21 (0.2) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.28 (0.0008) | 15.26 (0.003) | ||
| BP magnitude | 15.18 (0.009) | |||
| RP magnitude | 15.33 (0.003) | |||
| Pan g magnitude | 15.17 (0.006) | |||
| Pan r magnitude | 15.46 (0.003) | |||
| Pan i magnitude | 15.68 (0.0005) | |||
| Pan z magnitude | 15.84 (0.003) | |||
| Pan y magnitude | 15.92 (0.004) | |||
| E(B-V) | 0.086 | |||
* 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.