All names: Gaia DR3 3950334176662430592, Gaia DR2 3950334176662430592, 2MASS J12173499+1900449, PB 3925, SDSS J121735.00+190045.1, GALEX J121734.9+190045, UCAC4 546-051822, SDSS J121735.01+190045.1, SDSSJ121735.00+190045.1
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 12 17 35.01 | 12 17 35.01 (0.04) | ||
| Declination | 19 00 45.14 | 19 00 45.21 (0.03) | ||
| Spectral type | sdB+MS | sdO7He3+F/K | ||
| 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] | 0.30 (0.05) | 0.35 (0.05) | |
| Distance | [pc] | 3363.61 (603) | 2871.09 (386) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -5.172 (0.09) | -5.244 (0.05) | |
| Proper motion (declination) | [mas/yr] | -5.026 (0.06) | -5.001 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.16 (0.02) | |||
| V magnitude | 15.89 (0.02) | |||
| R magnitude | 15.92 (0.1) | |||
| I magnitude | ||||
| J magnitude | 15.40 (0.06) | 15.40 (0.06) | ||
| H magnitude | 15.09 (0.07) | 15.09 (0.07) | ||
| K magnitude | 15.08 (0.1) | 15.08 (0.1) | ||
| u magnitude | 16.11 (0.005) | 16.11 (0.005) | ||
| g magnitude | 15.88 (0.004) | 16.00 (0.01) | ||
| r magnitude | 15.93 (0.004) | 15.97 (0.01) | ||
| i magnitude | 15.94 (0.005) | 15.94 (0.005) | ||
| z magnitude | 16.01 (0.007) | 16.01 (0.007) | ||
| G magnitude | 15.85 (0.0007) | 15.84 (0.003) | ||
| BP magnitude | 15.92 (0.004) | |||
| RP magnitude | 15.62 (0.002) | |||
| Pan g magnitude | 15.94 (0.006) | |||
| Pan r magnitude | 15.92 (0.003) | |||
| Pan i magnitude | 15.96 (0.004) | |||
| Pan z magnitude | 16.02 (0.002) | |||
| Pan y magnitude | 16.05 (0.006) | |||
| E(B-V) | 0.020 | |||
* 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.