All names: 2MASS J00020847+1959132, HS 2359+1942, PG2359+197, PG 2359+197, LAMOST J000208.46+195913.1, LAMOST J000208.46+195913.2, Gaia DR2 2846319155418023424, Gaia DR3 2846319155418023424, UCAC3 220-174, GALEX J000208.4+195913
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 00 02 08.45 | 00 02 08.47 (0.04) | ||
| Declination | 19 59 12.80 | 19 59 13.14 (0.04) | ||
| Spectral type | sdB+WD | sdB | ||
| Effective temperature | [K] | 31434.0 (500) | ||
| log(g) | [cgs] | 5.56 (0.05) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.36 (0.07) | 0.40 (0.05) | |
| Distance | [pc] | 2767.78 (544) | 2490.04 (308) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -7.925 (0.1) | -7.952 (0.06) | |
| Proper motion (declination) | [mas/yr] | -0.477 (0.1) | -0.651 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.40 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.23 (0.09) | 16.23 (0.09) | ||
| H magnitude | 16.23 (0.2) | 16.23 (0.2) | ||
| K magnitude | 17.16 | |||
| u magnitude | 15.16 (0.005) | |||
| g magnitude | 15.59 (0.003) | |||
| r magnitude | 15.81 (0.003) | |||
| i magnitude | 16.12 (0.004) | |||
| z magnitude | 16.44 (0.01) | |||
| G magnitude | 15.60 (0.0007) | 15.58 (0.003) | ||
| BP magnitude | 15.41 (0.008) | |||
| RP magnitude | 15.83 (0.003) | |||
| Pan g magnitude | 15.40 (0.002) | |||
| Pan r magnitude | 15.80 (0.002) | |||
| Pan i magnitude | 16.17 (0.002) | |||
| Pan z magnitude | 16.43 (0.006) | |||
| Pan y magnitude | 16.58 (0.007) | |||
| E(B-V) | 0.048 | |||
* 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.