All names: 2MASS J21404797+2140427, LP 398-18, WDS J21408+2140A, Gaia EDR3 1793628576748905600, WISEA J214047.90+214042.0, TIC 297799401, ** LDS 4903A, WISE J214047.90+214042.1, WD 2138+214, Gaia DR2 1793628576748905600, Gaia DR2 1793628817267103744, USNO-B1.0 1116-00568901, SDSS J214047.91+214042.1, Gaia DR3 1793628817267103744
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|
| Right ascension | 21 40 50.01 (0.9) | 21 40 50.01 (2) | 21 40 47.96 (0.07) | 21 40 48.60 | |||
| Declination | 21 39 48.98 (0.7) | 21 39 48.99 (2) | 21 40 42.89 (0.06) | 21 40 40.08 | |||
| Spectral type | DA | DA4.8 | DA | ||||
| Effective temperature | [K] | 10510.0 (178) | |||||
| log(g) | [cgs] | 8.27 (0.09) | |||||
| Mass | [M☉] | 0.77 (0.06) | |||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| log(C/H) | |||||||
| log(N/H) | |||||||
| log(O/H) | |||||||
| log(Na/H) | |||||||
| log(Mg/H) | |||||||
| log(Al/H) | |||||||
| log(Si/H) | |||||||
| log(P/H) | |||||||
| log(S/H) | |||||||
| log(Sc/H) | |||||||
| log(Ti/H) | |||||||
| log(Cr/H) | |||||||
| log(Mn/H) | |||||||
| log(Fe/H) | |||||||
| log(Ni/H) | |||||||
| Parallax | [mas] | 0.57 (1) | 2.07 (2) | 4.39 (0.08) | |||
| Distance | [pc] | 1747.58 (3239) | 483.26 (569) | 124.00 | 227.70 (4) | ||
| Composition | H | ||||||
| Proper motion (right ascension) | [mas/yr] | -1.777083457 (1) | -4.865380326 (3) | -67.212 (0.08) | |||
| Proper motion (declination) | [mas/yr] | -5.581214444 (0.8) | -4.176350792 (3) | -80.106 (0.07) | |||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | yes | ||||||
| B magnitude | 18.40 | ||||||
| V magnitude | 17.90 | ||||||
| R magnitude | 16.60 | ||||||
| I magnitude | |||||||
| J magnitude | 13.92 (0.03) | ||||||
| H magnitude | 13.24 (0.04) | ||||||
| K magnitude | 13.09 (0.04) | ||||||
| u magnitude | |||||||
| g magnitude | |||||||
| r magnitude | |||||||
| i magnitude | |||||||
| z magnitude | |||||||
| G magnitude | 20.52 (0.2) | 20.56 | 16.69 (0.003) | ||||
| BP magnitude | 20.68 (0.2) | 20.52 | |||||
| RP magnitude | 20.01 (0.1) | 19.86 | |||||
| Pan g magnitude | |||||||
| Pan r magnitude | |||||||
| Pan i magnitude | |||||||
| Pan z magnitude | |||||||
| Pan y magnitude | |||||||
| E(B-V) | 0.063 | ||||||
* 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.