All names: LAMOST J084143.87+130430.0, Gaia DR2 603097422215268736, 2MASS J08414386+1304301, EPIC 211495446, GALAH 160112002301077, HIDDEN NAME PG 0838+132, Gaia DR3 603097422215268736, GALEX J084143.9+130430, PG0838+132, GALEX J084143.8+130431, LAMOST J084143.88+130431.9, [TFW97] J084143.86+130429.99, TIC 337630452, LAMOST J084143.85+130429.9, UCAC2 36467382, PG 0838+133
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 41 43.84 | 08 41 43.86 (0.03) | ||
| Declination | 13 04 30.12 | 13 04 29.98 (0.02) | ||
| Spectral type | He-sdO | sdOC7VIIHe40 | ||
| Effective temperature | [K] | 47660.0 (3710) | ||
| log(g) | [cgs] | 5.68 (0.3) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.77 (0.05) | 0.76 (0.04) | |
| Distance | [pc] | 1299.71 (79) | 1324.15 (66) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.266 (0.09) | -1.97 (0.04) | |
| Proper motion (declination) | [mas/yr] | -3.441 (0.05) | -3.585 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | 13.66 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.30 (0.03) | 14.30 (0.03) | ||
| H magnitude | 14.46 (0.05) | 14.46 (0.05) | ||
| K magnitude | 14.48 (0.07) | 14.48 (0.07) | ||
| u magnitude | 13.21 (0.004) | |||
| g magnitude | 13.57 (0.001) | |||
| r magnitude | 13.99 (0.005) | |||
| i magnitude | 14.33 (0.005) | |||
| z magnitude | 14.61 (0.005) | |||
| G magnitude | 13.61 (0.0004) | 13.60 (0.003) | ||
| BP magnitude | 13.38 (0.005) | |||
| RP magnitude | 13.89 (0.001) | |||
| Pan g magnitude | 13.49 (0.02) | |||
| Pan r magnitude | 13.87 (0.005) | |||
| Pan i magnitude | 14.24 (0.01) | |||
| Pan z magnitude | 14.51 (0.003) | |||
| Pan y magnitude | 14.69 (0.008) | |||
| E(B-V) | 0.032 | |||
* 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.