All names: LAMOST J033904.61+392710.7, 2MASS J03390463+3927106, SDSS J033904.62+392710.7, Gaia DR2 224558555440110208, LAMOSTJ033904.61+392710.7, Gaia DR3 224558555440110208
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 03 39 04.62 | 03 39 04.62 (0.04) | ||
| Declination | 39 27 10.76 | 39 27 10.77 (0.03) | ||
| Spectral type | sdB | sdB/sdO | ||
| Effective temperature | [K] | 22325.0 (198) | ||
| log(g) | [cgs] | 4.96 (0.01) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.27 (0.06) | 0.14 (0.05) | |
| Distance | [pc] | 3766.48 (837) | 7283.32 (2642) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.218 (0.1) | 1.011 (0.07) | |
| Proper motion (declination) | [mas/yr] | -0.457 (0.08) | -0.404 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.08 (0.07) | 16.08 (0.07) | ||
| H magnitude | 16.03 (0.2) | 16.03 (0.2) | ||
| K magnitude | 16.90 | |||
| u magnitude | 16.45 (0.006) | 16.45 (0.006) | ||
| g magnitude | 16.13 (0.004) | 16.13 (0.004) | ||
| r magnitude | 16.37 (0.005) | 16.38 (0.005) | ||
| i magnitude | 16.56 (0.006) | 16.57 (0.006) | ||
| z magnitude | 16.75 (0.009) | 16.77 (0.009) | ||
| G magnitude | 16.29 (0.0009) | 16.26 (0.003) | ||
| BP magnitude | 16.23 (0.004) | |||
| RP magnitude | 16.27 (0.004) | |||
| Pan g magnitude | 16.22 (0.005) | |||
| Pan r magnitude | 16.41 (0.004) | |||
| Pan i magnitude | 16.62 (0.006) | |||
| Pan z magnitude | 16.78 (0.003) | |||
| Pan y magnitude | 16.86 (0.008) | |||
| E(B-V) | 0.196 | |||
* 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.