All names: Gaia DR2 1232778626111037184, SDSS J142104.80+173628.8, UCAC4 539-053851, Gaia DR3 1232778626111037184, PG 1418+178, PG1418+178, 2MASS J14210480+1736287, WISEA J142104.81+173628.8, WISE J142104.81+173628.8, SDSS J142104.80+173628.7, SDSS J142104.81+173628.8, TIC 86436725
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 14 21 04.84 | 14 21 04.81 (0.04) | ||
| Declination | 17 36 28.99 | 17 36 28.74 (0.03) | ||
| Spectral type | sdOB+MS | sdOB+G0V | ||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.29 (0.07) | 0.31 (0.05) | |
| Distance | [pc] | 3474.64 (852) | 3217.50 (491) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -8.272 (0.1) | -7.984 (0.05) | |
| Proper motion (declination) | [mas/yr] | 0.817 (0.1) | 0.583 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.47 (0) | |||
| V magnitude | 16.44 (0.01) | |||
| R magnitude | 16.15 | |||
| I magnitude | ||||
| J magnitude | 15.90 (0.07) | 15.90 (0.07) | ||
| H magnitude | 15.46 (0.1) | 15.46 (0.1) | ||
| K magnitude | 15.71 (0.2) | 15.71 (0.2) | ||
| u magnitude | 16.19 (0.006) | 16.19 (0.006) | ||
| g magnitude | 16.24 (0.004) | 16.24 (0.004) | ||
| r magnitude | 16.43 (0.005) | 16.43 (0.005) | ||
| i magnitude | 16.54 (0.005) | 16.54 (0.005) | ||
| z magnitude | 16.65 (0.01) | 16.65 (0.01) | ||
| G magnitude | 16.29 (0.002) | 16.27 (0.003) | ||
| BP magnitude | 16.24 (0.01) | |||
| RP magnitude | 16.21 (0.004) | |||
| Pan g magnitude | 16.28 (0.004) | |||
| Pan r magnitude | 16.44 (0.003) | |||
| Pan i magnitude | 16.57 (0.006) | |||
| Pan z magnitude | 16.65 (0.005) | |||
| Pan y magnitude | 16.70 (0.006) | |||
| E(B-V) | 0.023 | |||
* 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.