All names: Gaia DR2 169258102724229888, LAMOST J040242.09+312349.5, UCAC4 607-010852, LAMOSTJ040242.09+312349.5, TIC 467654272, 2MASS J04024208+3123497, Gaia DR3 169258102725227008
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 02 42.10 | 04 02 42.09 (0.05) | ||
| Declination | 31 23 49.54 | 31 23 49.81 (0.03) | ||
| Spectral type | sdOB | sdOB | ||
| Effective temperature | [K] | 37500.0 (213) | ||
| log(g) | [cgs] | 6.05 (0.05) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.93 (0.06) | 0.93 (0.06) | |
| Distance | [pc] | 1072.39 (74) | 1075.62 (67) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 7.511 (0.1) | 7.515 (0.07) | |
| Proper motion (declination) | [mas/yr] | -22.786 (0.08) | -22.935 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.68 (0.07) | |||
| V magnitude | 15.45 (0.1) | |||
| R magnitude | 16.07 (0.2) | |||
| I magnitude | ||||
| J magnitude | 15.90 (0.07) | 15.90 (0.07) | ||
| H magnitude | 15.81 (0.1) | 15.81 (0.1) | ||
| K magnitude | 15.83 (0.2) | 15.83 (0.2) | ||
| u magnitude | ||||
| g magnitude | 15.50 (0.06) | |||
| r magnitude | 15.37 (0.08) | |||
| i magnitude | 15.31 (0.01) | |||
| z magnitude | ||||
| G magnitude | 15.83 (0.001) | 15.82 (0.003) | ||
| BP magnitude | 15.76 (0.005) | |||
| RP magnitude | 15.79 (0.003) | |||
| Pan g magnitude | 15.79 (0.0006) | |||
| Pan r magnitude | 15.94 (0.003) | |||
| Pan i magnitude | 16.12 (0.005) | |||
| Pan z magnitude | 16.27 (0.004) | |||
| Pan y magnitude | 16.41 (0.006) | |||
| E(B-V) | 0.305 | |||
* 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.