All names: Gaia DR3 4423803640433164800, LAMOST J154210.88+015557.2, 2MASS J15421089+0155573, UCAC4 460-056097, LAMOSTJ154210.88+015557.2, SDSS J154210.89+015557.2, SDSS J154210.88+015557.2, Gaia DR2 4423803640433164800, Gaia EDR3 4423803361258679168, GALEX J154210.8+015557
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 15 42 16.71 (0.8) | 15 42 10.88 | 15 42 10.89 (0.03) | ||
| Declination | 01 54 47.56 (0.5) | 01 55 57.20 | 01 55 57.23 (0.03) | ||
| Spectral type | sdB+MS | sdB0He8+G/K | |||
| 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] | 1.74 (0.9) | 0.45 (0.05) | 0.39 (0.04) | |
| Distance | [pc] | 573.69 (308) | 2230.15 (236) | 2577.98 (255) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -11.21 (1) | -6.968 (0.09) | -6.754 (0.04) | |
| Proper motion (declination) | [mas/yr] | 2.58 (0.7) | -10.384 (0.07) | -10.36 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | 15.95 (0.02) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.23 (0.04) | ||||
| H magnitude | 15.00 (0.06) | ||||
| K magnitude | 14.89 (0.1) | ||||
| u magnitude | 16.02 (0.006) | 16.02 (0.006) | |||
| g magnitude | 15.89 (0.004) | 15.88 (0.01) | |||
| r magnitude | 15.92 (0.004) | 15.91 (0.08) | |||
| i magnitude | 15.92 (0.005) | 15.89 (0.1) | |||
| z magnitude | 15.98 (0.008) | 15.98 (0.008) | |||
| G magnitude | 20.65 (0.008) | 15.85 (0.0009) | 15.83 (0.003) | ||
| BP magnitude | 20.96 (0.2) | 15.91 (0.004) | |||
| RP magnitude | 19.95 (0.08) | 15.61 (0.003) | |||
| Pan g magnitude | 15.92 (0.003) | ||||
| Pan r magnitude | 15.93 (0.002) | ||||
| Pan i magnitude | 15.96 (0.002) | ||||
| Pan z magnitude | 16.00 (0.005) | ||||
| Pan y magnitude | 16.01 (0.007) | ||||
| E(B-V) | 0.054 | ||||
* 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.