All names: Gaia DR2 2734200064947455232, UCAC4 520-142096, SDSS J221617.96+135121.06, HS2213+1336, SDSS J221617.96+135121.2, HS 2213+1336, TIC 404471080, Gaia EDR3 2734200064947455232, LAMOST J221617.96+135121.0, Gaia DR3 2734200064947455232, SDSS J221617.96+135121.0, 2MASS J22161796+1351209, GALEX J221617.9+135120
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 16 17.97 (0.04) | 22 16 17.96 | 22 16 17.97 | 22 16 17.97 (0.07) | 22 16 17.96 (0.04) | ||||
| Declination | 13 51 21.02 (0.03) | 13 51 21.23 | 13 51 22.16 | 13 51 21.03 (0.06) | 13 51 21.26 (0.03) | ||||
| Spectral type | sdB | sdB | sdB | ||||||
| Effective temperature | [K] | 20300.0 (1000) | 24975.0 (149) | ||||||
| log(g) | [cgs] | 4.75 (0.2) | 5.00 (0.05) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.33 (0.04) | 0.40 (0.08) | 0.40 (0.08) | 0.33 (0.04) | ||||
| Distance | [pc] | 3014.01 (406) | 2495.63 (525) | 2495.70 (525) | 3013.86 (406) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 1.758255654 (0.05) | 1.489 (0.1) | 1.489059043 (0.1) | 1.758 (0.06) | ||||
| Proper motion (declination) | [mas/yr] | -15.29827995 (0.04) | -15.279 (0.1) | -15.2787062 (0.1) | -15.298 (0.04) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.81 (0.02) | ||||||||
| V magnitude | 15.82 (0.1) | ||||||||
| R magnitude | 16.18 | ||||||||
| I magnitude | |||||||||
| J magnitude | 16.15 (0.09) | 16.15 (0.09) | |||||||
| H magnitude | 16.28 (0.2) | 16.28 (0.2) | |||||||
| K magnitude | 15.24 | ||||||||
| u magnitude | 15.77 (0.005) | 15.77 (0.005) | 15.78 (0.02) | 15.77 (0.005) | |||||
| g magnitude | 15.61 (0.004) | 15.61 (0.004) | 15.64 (0.02) | 15.61 (0.004) | |||||
| r magnitude | 15.98 (0.005) | 15.98 (0.005) | 15.96 (0.01) | 15.98 (0.005) | |||||
| i magnitude | 16.24 (0.005) | 16.24 (0.005) | 16.23 (0.02) | 16.24 (0.005) | |||||
| z magnitude | 16.39 (0.008) | 16.39 (0.008) | 16.41 (0.03) | 16.39 (0.008) | |||||
| G magnitude | 15.81 (0.004) | 15.83 (0.001) | 15.83 | 15.81 (0.003) | |||||
| BP magnitude | 15.75 (0.004) | 15.72 (0.007) | 15.72 | ||||||
| RP magnitude | 15.94 (0.005) | 15.94 (0.004) | 15.94 | ||||||
| Pan g magnitude | 15.69 (0.004) | 15.69 (0.004) | |||||||
| Pan r magnitude | 15.99 (0.002) | 15.99 (0.002) | |||||||
| Pan i magnitude | 16.28 (0.003) | 16.28 (0.003) | |||||||
| Pan z magnitude | 16.48 (0.003) | 16.48 (0.003) | |||||||
| Pan y magnitude | 16.60 (0.002) | 16.60 (0.002) | |||||||
| E(B-V) | 0.046 | ||||||||
* 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.