All names: Gaia DR2 351536441749571200, UCAC4 669-010612, LAMOST J021708.67+434053.0, Gaia EDR3 351536441749571200, 2MASS J02170867+4340529, GALEX J021708.6+434053, Gaia DR3 351536441749571200, LAMOSTJ021708.68+434053.0
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 02 17 08.67 (0.05) | 02 17 08.68 | 02 17 08.68 (0.05) | ||
| Declination | 43 40 53.03 (0.04) | 43 40 53.06 | 43 40 53.07 (0.04) | ||
| Spectral type | sdOB | sdOB | |||
| Effective temperature | [K] | 35940.0 (1350) | |||
| log(g) | [cgs] | 5.71 (0.03) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.66 (0.05) | 0.74 (0.1) | 0.66 (0.05) | |
| Distance | [pc] | 1515.15 (121) | 1353.91 (201) | 1515.15 (121) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.59 (0.06) | -2.471 (0.2) | -2.59 (0.06) | |
| Proper motion (declination) | [mas/yr] | -2.318 (0.06) | -2.452 (0.1) | -2.318 (0.06) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.41 (0.01) | ||||
| V magnitude | 15.60 (0.07) | ||||
| R magnitude | 16.01 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 16.00 (0.09) | 16.00 (0.09) | |||
| H magnitude | 15.97 (0.2) | 15.97 (0.2) | |||
| K magnitude | 15.92 | ||||
| u magnitude | |||||
| g magnitude | 15.39 (0.03) | ||||
| r magnitude | 15.79 (0.02) | ||||
| i magnitude | 15.92 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 15.56 (0.003) | 15.58 (0.001) | 15.56 (0.003) | ||
| BP magnitude | 15.44 (0.004) | 15.39 (0.01) | |||
| RP magnitude | 15.78 (0.005) | 15.78 (0.006) | |||
| Pan g magnitude | 15.43 (0.002) | ||||
| Pan r magnitude | 15.79 (0.001) | ||||
| Pan i magnitude | 16.13 (0.002) | ||||
| Pan z magnitude | 16.38 (0.003) | ||||
| Pan y magnitude | 16.54 (0.004) | ||||
| E(B-V) | 0.083 | ||||
* 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.