All names: WD 2154+408, KPD 2154+4048, 1SWASP J215618.25+410245.5, ATO J329.0758+41.0457, TIC 276683852, 2MASS J21561824+4102452, Gaia DR2 1959593642149299968, Gaia DR3 1959593642149299968, WISEA J215618.21+410244.9, UCAC4 656-103517, KPD, 2154+408, Gaia EDR3 1959593642149299968, WISE J215618.21+410245.0
| Parameter | Unit | Gaia EDR3 | Leggett et al. 2018 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Zuckerman et al. 2003 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 56 18.19 (0.02) | 21 56 18.19 (0.02) | 21 56 18.25 (0.02) | 21 56 16.78 | |||||
| Declination | 41 02 44.78 (0.02) | 41 02 44.80 (0.02) | 41 02 45.29 (0.02) | 41 02 53.16 | |||||
| Spectral type | DA | DA1.7 | DA | ||||||
| Effective temperature | [K] | 29100.0 (508) | 22000.0 | ||||||
| log(g) | [cgs] | 7.71 (0.07) | 8.00 | ||||||
| Mass | [M☉] | 0.5 (0.03) | |||||||
| 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] | 7.15 (0.02) | 7.15 (0.3) | 7.16 (0.03) | 7.15 (0.02) | ||||
| Distance | [pc] | 139.90 (0.5) | 139.86 (5) | 139.71 (0.6) | 134.00 | 139.90 (0.5) | |||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | -38.31372055 (0.02) | -38.22569905 (0.05) | -38.314 (0.02) | |||||
| Proper motion (declination) | [mas/yr] | -31.5414307 (0.02) | -31.50843888 (0.05) | -31.541 (0.02) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | 15.29 (0.06) | ||||||||
| V magnitude | 15.23 (0.07) | ||||||||
| R magnitude | 15.38 (0.2) | ||||||||
| I magnitude | |||||||||
| J magnitude | 12.88 (0.03) | ||||||||
| H magnitude | 12.38 (0.03) | ||||||||
| K magnitude | 12.15 (0.03) | ||||||||
| u magnitude | |||||||||
| g magnitude | 15.23 (0.05) | ||||||||
| r magnitude | 15.26 (0.07) | ||||||||
| i magnitude | 14.76 (0.1) | ||||||||
| z magnitude | |||||||||
| G magnitude | 14.88 (0.006) | 14.89 | 14.88 (0.003) | ||||||
| BP magnitude | 15.16 (0.006) | 15.13 | |||||||
| RP magnitude | 14.27 (0.005) | 14.29 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.026 | ||||||||
* 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.