All names: TIC 18919391, SDSS J120512.56+400748.7, FB 82, 2MASS J12051255+4007485, Gaia DR3 4034847759974004992, PG1202+404, SDSS J120512.57+400748.80, HZ 17, PG 1202+404, SDSS J120512.57+400748.8, Gaia DR2 4034847759974004992, GALEX J120512.5+400748, Gaia EDR3 4034847759974004992, CBS 456
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 05 12.57 (0.03) | 12 05 12.57 | 12 05 12.58 | 12 05 12.57 (0.04) | 12 05 12.57 (0.03) | ||||
| Declination | 40 07 48.78 (0.04) | 40 07 48.80 | 40 07 48.87 | 40 07 48.78 (0.05) | 40 07 48.78 (0.04) | ||||
| Spectral type | sdB | sdB | sdBp | ||||||
| Effective temperature | [K] | 27628.0 (1188) | 29192.0 (118) | ||||||
| log(g) | [cgs] | 5.32 (0.2) | 5.37 (0.03) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.47 (0.05) | 0.40 (0.07) | 0.40 (0.07) | 0.47 (0.05) | ||||
| Distance | [pc] | 2112.81 (215) | 2480.77 (402) | 2480.80 (402) | 2112.82 (215) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -0.933013857 (0.04) | -0.933 (0.06) | -0.932505732 (0.06) | -0.933 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | 0.258311565 (0.04) | 0.137 (0.1) | 0.136712434 (0.1) | 0.258 (0.04) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 14.40 | ||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.32 (0.1) | 16.32 (0.1) | |||||||
| H magnitude | 15.79 (0.2) | 15.79 (0.2) | |||||||
| K magnitude | 15.82 | ||||||||
| u magnitude | 15.07 (0.004) | 15.06 (0.004) | 15.08 (0.009) | 15.06 (0.004) | |||||
| g magnitude | 15.25 (0.003) | 15.25 (0.003) | 15.27 (0.01) | 15.25 (0.003) | |||||
| r magnitude | 15.75 (0.004) | 15.75 (0.004) | 15.77 (0.02) | 15.75 (0.004) | |||||
| i magnitude | 16.10 (0.004) | 16.10 (0.004) | 16.11 (0.02) | 16.10 (0.004) | |||||
| z magnitude | 16.41 (0.009) | 16.41 (0.009) | 16.42 (0.01) | 16.41 (0.009) | |||||
| G magnitude | 15.52 (0.002) | 15.54 (0.0006) | 15.54 | 15.52 (0.003) | |||||
| BP magnitude | 15.38 (0.002) | 15.31 (0.007) | 15.31 | ||||||
| RP magnitude | 15.80 (0.003) | 15.80 (0.003) | 15.80 | ||||||
| Pan g magnitude | 15.33 (0.01) | 15.33 (0.01) | |||||||
| Pan r magnitude | 15.77 (0.003) | 15.77 (0.003) | |||||||
| Pan i magnitude | 16.15 (0.002) | 16.14 (0.002) | |||||||
| Pan z magnitude | 16.40 (0.003) | 16.40 (0.003) | |||||||
| Pan y magnitude | 16.59 (0.006) | 16.59 (0.006) | |||||||
| E(B-V) | 0.018 | ||||||||
* 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.