All names: Gaia EDR3 1768038616137960704, Gaia DR2 1768038616137960704, SDSS J215053.83+131650.5, 2MASS J21505379+1316506, Gaia DR3 1768038616137960704, SDSSJ215053.84+131650.5, GALEX J215053.8+131650, SDSS J215053.84+131650.5, TIC 385054289
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 50 53.84 (0.07) | 21 50 53.84 | 21 50 53.84 | 21 50 53.84 (0.1) | 21 50 53.84 (0.07) | 21 50 53.84 | |||
| Declination | 13 16 50.52 (0.06) | 13 16 50.56 | 13 16 50.50 | 13 16 50.52 (0.1) | 13 16 50.56 (0.06) | 13 16 50.52 | |||
| Spectral type | sdB+MS | sdB | SD_auto | ||||||
| Effective temperature | [K] | 27815.0 (322) | |||||||
| log(g) | [cgs] | 5.06 (0.08) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.21 (0.08) | 0.13 (0.1) | 0.13 (0.1) | 0.21 (0.08) | ||||
| Distance | [pc] | 4797.12 (1849) | 7440.48 (6937) | 7441.11 (6936) | 4796.16 (1849) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 2.824833679 (0.08) | 2.478 (0.2) | 2.478407851 (0.2) | 2.825 (0.09) | 2.7 | |||
| Proper motion (declination) | [mas/yr] | -2.56115999 (0.08) | -2.349 (0.2) | -2.349273105 (0.2) | -2.561 (0.08) | 2.5 | |||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.42 (0.1) | 16.42 (0.1) | |||||||
| H magnitude | 16.23 (0.2) | 16.23 (0.2) | |||||||
| K magnitude | 15.69 | ||||||||
| u magnitude | 17.05 (0.009) | 17.05 (0.009) | 17.05 (0.009) | 17.07 (0.02) | |||||
| g magnitude | 16.94 (0.005) | 16.94 (0.005) | 16.94 (0.005) | 16.96 (0.01) | |||||
| r magnitude | 17.10 (0.005) | 17.10 (0.005) | 17.10 (0.005) | 17.06 (0.01) | |||||
| i magnitude | 17.18 (0.007) | 17.18 (0.007) | 17.18 (0.007) | 17.14 (0.01) | |||||
| z magnitude | 17.26 (0.01) | 17.26 (0.01) | 17.26 (0.01) | 17.22 (0.02) | |||||
| G magnitude | 16.99 (0.006) | 17.02 (0.002) | 17.02 | 16.99 (0.003) | |||||
| BP magnitude | 17.02 (0.006) | 17.01 (0.01) | 17.01 | ||||||
| RP magnitude | 16.89 (0.009) | 16.91 (0.008) | 16.91 | ||||||
| Pan g magnitude | 16.99 (0.004) | 16.99 (0.004) | |||||||
| Pan r magnitude | 17.12 (0.004) | 17.12 (0.004) | |||||||
| Pan i magnitude | 17.22 (0.003) | 17.22 (0.003) | |||||||
| Pan z magnitude | 17.30 (0.005) | 17.30 (0.005) | |||||||
| Pan y magnitude | 17.35 (0.008) | 17.35 (0.008) | |||||||
| E(B-V) | 0.051 | ||||||||
* 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.