All names: SDSS J142044.12+161713.6, SDSS J142044.13+161713.67, GALEX J142044.1+161713, Gaia DR3 1232332220094873984, SDSSJ142044.12+161713.6, SDSS J142044.13+161713.6, Gaia DR2 1232332220094873984, Gaia EDR3 1232332220094873984
| Parameter | Unit | Gaia EDR3 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 20 44.12 (0.2) | 14 20 44.13 | 14 20 44.12 | 14 20 44.12 (0.3) | 14 20 44.12 (0.2) | |||
| Declination | 16 17 13.69 (0.1) | 16 17 13.69 | 16 17 13.60 | 16 17 13.69 (0.2) | 16 17 13.73 (0.1) | |||
| Spectral type | sdB | DAB: | sdB | |||||
| Effective temperature | [K] | 31858.0 (322) | ||||||
| log(g) | [cgs] | 5.80 (0.07) | ||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.39 (0.2) | 0.44 (0.3) | 0.44 (0.3) | 0.39 (0.2) | |||
| Distance | [pc] | 2572.11 (1329) | 2251.75 (1591) | 2251.83 (1591) | 2572.02 (1329) | |||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -5.151733606 (0.2) | -4.677 (0.5) | -4.676567697 (0.5) | -5.152 (0.2) | |||
| Proper motion (declination) | [mas/yr] | -2.358621834 (0.2) | -1.186 (0.4) | -1.185901738 (0.4) | -2.359 (0.2) | |||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 18.37 (0.02) | 18.37 (0.02) | 18.34 (0.02) | 18.37 (0.02) | ||||
| g magnitude | 18.43 (0.007) | 18.43 (0.007) | 18.45 (0.02) | 18.43 (0.007) | ||||
| r magnitude | 18.91 (0.01) | 18.91 (0.01) | 18.93 (0.02) | 18.91 (0.01) | ||||
| i magnitude | 19.39 (0.02) | 19.39 (0.02) | 19.39 (0.07) | 19.39 (0.02) | ||||
| z magnitude | 20.20 (0.1) | 20.20 (0.1) | 20.17 (0.5) | 20.20 (0.1) | ||||
| G magnitude | 18.69 (0.02) | 18.76 (0.005) | 18.76 | 18.69 (0.003) | ||||
| BP magnitude | 18.56 (0.02) | 18.50 (0.02) | 18.50 | |||||
| RP magnitude | 18.89 (0.04) | 18.73 (0.05) | 18.73 | |||||
| Pan g magnitude | 18.49 (0.008) | |||||||
| Pan r magnitude | 18.89 (0.01) | |||||||
| Pan i magnitude | 19.21 (0.02) | |||||||
| Pan z magnitude | 19.51 (0.04) | |||||||
| Pan y magnitude | 19.60 (0.1) | |||||||
| E(B-V) | 0.023 | |||||||
* 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.