All names: Gaia DR2 2694805697195721088, Gaia DR3 2694805697195721088, GALEX J213800.2+031304, GALEXJ21380+0313, WISE J213800.25+031302.4, UCAC2 32974293, WISEA J213800.25+031302.2, Gaia EDR3 2694804559028808960, TIC 353101832, UCAC4 467-130609, 2MASS J21380025+0313024, SDSS J213800.24+031302.3
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 37 57.75 (0.3) | 21 38 00.24 | 21 38 00.25 (0.02) | ||
| Declination | 03 11 42.54 (0.2) | 03 13 02.26 | 03 13 02.44 (0.02) | ||
| Spectral type | sdB+G | sdB+G | |||
| 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] | 1.12 (0.4) | 1.05 (0.04) | 1.02 (0.02) | |
| Distance | [pc] | 892.94 (298) | 956.39 (34) | 983.77 (24) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.829 (0.3) | -2.35 (0.07) | -2.649 (0.03) | |
| Proper motion (declination) | [mas/yr] | -6.136 (0.3) | -2.855 (0.06) | -3.094 (0.01) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.50 (0.02) | ||||
| V magnitude | 13.31 (0.01) | ||||
| R magnitude | 13.56 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 12.86 (0.03) | 12.86 (0.03) | |||
| H magnitude | 12.68 (0.03) | 12.68 (0.03) | |||
| K magnitude | 12.64 (0.03) | 12.64 (0.03) | |||
| u magnitude | 14.07 (0.004) | ||||
| g magnitude | 13.87 (0.006) | 13.38 (0.02) | |||
| r magnitude | 13.57 (0.003) | 13.35 (0.01) | |||
| i magnitude | 13.84 (0.009) | 13.42 (0.04) | |||
| z magnitude | 13.66 (0.004) | ||||
| G magnitude | 19.44 (0.004) | 13.31 (0.0004) | 13.29 (0.003) | ||
| BP magnitude | 19.70 (0.04) | 13.37 (0.004) | |||
| RP magnitude | 19.08 (0.04) | 13.12 (0.002) | |||
| Pan g magnitude | 13.51 (0.06) | ||||
| Pan r magnitude | 13.67 (0.001) | ||||
| Pan i magnitude | 13.46 (0.001) | ||||
| Pan z magnitude | 13.56 (0.008) | ||||
| Pan y magnitude | 13.58 (0.001) | ||||
| E(B-V) | 0.048 | ||||
* 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.