All names: LAMOST J084340.68+020027.2, WISE J084340.69+020027.3, WISEA J084340.68+020027.3, LAMOSTJ084340.68+020027.2, Gaia DR2 3078888851357039360, Gaia DR3 3078888851357039360, 2MASS J08434069+0200272, UCAC4 461-044249, TIC 350231282
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 43 40.69 | 08 43 40.69 (0.04) | ||
| Declination | 02 00 27.26 | 02 00 27.23 (0.02) | ||
| Spectral type | sdOB | sdO | ||
| Effective temperature | [K] | 42851.0 (395) | ||
| log(g) | [cgs] | 5.62 (0.04) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.77 (0.07) | 0.83 (0.04) | |
| Distance | [pc] | 1294.33 (112) | 1209.04 (64) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -6.068 (0.1) | -6.44 (0.05) | |
| Proper motion (declination) | [mas/yr] | 0.828 (0.1) | 0.886 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | 14.08 (0.07) | |||
| R magnitude | 14.36 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.68 (0.04) | 14.68 (0.04) | ||
| H magnitude | 14.81 (0.08) | 14.81 (0.08) | ||
| K magnitude | 15.27 (0.2) | 15.27 (0.2) | ||
| u magnitude | 13.54 (0.003) | |||
| g magnitude | 13.84 (0.003) | 13.84 (0.02) | ||
| r magnitude | 14.36 (0.007) | 14.29 (0.07) | ||
| i magnitude | 14.66 (0.004) | 14.69 (0.02) | ||
| z magnitude | 14.88 (0.005) | |||
| G magnitude | 14.03 (0.0005) | 14.02 (0.003) | ||
| BP magnitude | 13.81 (0.006) | |||
| RP magnitude | 14.30 (0.001) | |||
| Pan g magnitude | 13.85 (0.004) | |||
| Pan r magnitude | 14.28 (0.002) | |||
| Pan i magnitude | 14.62 (0.002) | |||
| Pan z magnitude | 14.93 (0.005) | |||
| Pan y magnitude | 15.07 (0.001) | |||
| E(B-V) | 0.029 | |||
* 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.