All names: CSI+26-15384, FB 160, Gaia DR3 1223920926079402112, [TFW97] J154023.44+264829.79, PG 1538+269, 2MASS J15402345+2648297, UCAC4 585-051951, LAMOST J154023.46+264829.7, Ton 245, TIC 283870336, UBV 13378, uvby98 610070245, WD 1538+269, Gaia DR2 1223920926079402112, UBV M 43127, Gaia EDR3 1223920926079402112, WISEA J154023.46+264829.6, GEN# +6.10070245, WISE J154023.46+264829.7, GSC 02036-00469, PG1538+269
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|
| Right ascension | 15 40 23.47 (0.01) | 15 40 23.42 | 15 40 23.47 (0.02) | 15 40 23.46 (0.01) | 15 40 23.09 | ||
| Declination | 26 48 29.67 (0.02) | 26 48 30.21 | 26 48 29.67 (0.04) | 26 48 29.78 (0.02) | 26 48 23.04 | ||
| Spectral type | sdB+WD | sdB | DA2.0 sd | ||||
| Effective temperature | [K] | 25200.0 (1000) | |||||
| log(g) | [cgs] | 5.30 (0.1) | |||||
| Mass | [M☉] | ||||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| Parallax | [mas] | 1.21 (0.03) | 1.21 (0.05) | 1.21 (0.05) | 1.21 (0.03) | ||
| Distance | [pc] | 826.99 (20) | 828.64 (32) | 828.66 (32) | 826.99 (20) | ||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | 9.52990448 (0.02) | 9.526 (0.05) | 9.526166193 (0.05) | 9.53 (0.02) | ||
| Proper motion (declination) | [mas/yr] | -7.30567827 (0.03) | -7.304 (0.07) | -7.304006654 (0.07) | -7.306 (0.03) | ||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | 13.65 (0.05) | ||||||
| V magnitude | 13.86 (0.04) | ||||||
| R magnitude | 14.07 (0.1) | ||||||
| I magnitude | |||||||
| J magnitude | 14.37 (0.03) | 14.37 (0.03) | |||||
| H magnitude | 14.49 (0.05) | 14.49 (0.05) | |||||
| K magnitude | 14.52 (0.08) | 14.52 (0.08) | |||||
| u magnitude | 14.54 (0.007) | 14.92 | |||||
| g magnitude | 14.01 (0.005) | 13.68 (0.04) | 14.15 | ||||
| r magnitude | 14.08 (0.003) | 14.06 (0.04) | 14.14 | ||||
| i magnitude | 15.27 (0.009) | 14.46 (0.1) | 15.22 | ||||
| z magnitude | 15.32 (0.009) | 14.82 | |||||
| G magnitude | 13.80 (0.0007) | 13.82 (0.0003) | 13.82 | 13.80 (0.003) | |||
| BP magnitude | 13.68 (0.0007) | 13.62 (0.004) | 13.62 | ||||
| RP magnitude | 14.03 (0.0007) | 14.03 (0.001) | 14.03 | ||||
| Pan g magnitude | 13.63 (0.008) | ||||||
| Pan r magnitude | 14.03 (0.003) | ||||||
| Pan i magnitude | 14.36 (0.002) | ||||||
| Pan z magnitude | 14.62 (0.003) | ||||||
| Pan y magnitude | 14.79 (0.02) | ||||||
| E(B-V) | 0.036 | ||||||
* 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.